From 9add7f71ff26864477f80e3495859f2be28e6e6e Mon Sep 17 00:00:00 2001
From: Lee Rowlands <lee.rowlands@previousnext.com.au>
Date: Wed, 3 Jan 2024 15:25:34 +1000
Subject: [PATCH] Issue #3399373 by mstrelan, xjm, longwave, quietone: Add
declare(strict_types=1) to all Unit tests
---
.../action/tests/src/Unit/Menu/ActionLocalTasksTest.php | 2 ++
.../tests/src/Unit/AnnounceFetcherUnitTest.php | 2 ++
core/modules/ban/tests/src/Unit/BanMiddlewareTest.php | 2 ++
.../Unit/Render/BigPipeResponseAttachmentsProcessorTest.php | 2 ++
.../big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php | 2 ++
.../big_pipe/tests/src/Unit/Render/ManyPlaceholderTest.php | 2 ++
.../src/Unit/Render/Placeholder/BigPipeStrategyTest.php | 2 ++
.../block/tests/src/Unit/BlockConfigEntityUnitTest.php | 2 ++
core/modules/block/tests/src/Unit/BlockFormTest.php | 2 ++
core/modules/block/tests/src/Unit/BlockRepositoryTest.php | 2 ++
.../block/tests/src/Unit/CategoryAutocompleteTest.php | 2 ++
.../block/tests/src/Unit/Menu/BlockLocalTasksTest.php | 2 ++
.../src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php | 2 ++
.../src/Unit/Plugin/migrate/process/BlockRegionTest.php | 2 ++
.../src/Unit/Plugin/migrate/process/BlockSettingsTest.php | 2 ++
.../Plugin/migrate/process/BlockThemeDeprecationTest.php | 2 ++
.../src/Unit/Plugin/migrate/process/BlockVisibilityTest.php | 2 ++
.../tests/src/Unit/Access/AccessGroupAndTest.php | 2 ++
.../tests/src/Unit/Access/AccessibleTestingTrait.php | 2 ++
.../tests/src/Unit/Access/DependentAccessTest.php | 2 ++
.../tests/src/Unit/Menu/BlockContentLocalTasksTest.php | 2 ++
core/modules/book/tests/src/Unit/BookManagerTest.php | 2 ++
.../book/tests/src/Unit/BookUninstallValidatorTest.php | 2 ++
.../modules/book/tests/src/Unit/Menu/BookLocalTasksTest.php | 2 ++
core/modules/breakpoint/tests/src/Unit/BreakpointTest.php | 2 ++
core/modules/ckeditor5/tests/src/Unit/CKEditor5Test.php | 2 +-
.../ckeditor5/tests/src/Unit/HTMLRestrictionsTest.php | 2 +-
.../ckeditor5/tests/src/Unit/SmartDefaultSettingsTest.php | 2 +-
.../comment/tests/src/Unit/CommentLinkBuilderTest.php | 2 ++
core/modules/comment/tests/src/Unit/CommentManagerTest.php | 2 ++
.../comment/tests/src/Unit/CommentStatisticsUnitTest.php | 2 ++
.../comment/tests/src/Unit/Entity/CommentLockTest.php | 2 ++
.../src/Unit/Plugin/views/field/CommentBulkFormTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/EntityLinkTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/LinkApproveTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/LinkReplyTest.php | 2 ++
.../config/tests/src/Unit/Menu/ConfigLocalTasksTest.php | 2 ++
.../tests/src/Unit/ConfigEntityMapperTest.php | 2 ++
.../tests/src/Unit/ConfigFieldMapperTest.php | 2 ++
.../tests/src/Unit/ConfigMapperManagerTest.php | 2 ++
.../tests/src/Unit/ConfigNamesMapperTest.php | 2 ++
core/modules/contact/tests/src/Unit/ContactLinkTest.php | 2 ++
core/modules/contact/tests/src/Unit/MailHandlerTest.php | 2 ++
.../tests/src/Unit/ContentModerationRouteSubscriberTest.php | 2 ++
.../tests/src/Unit/ContentPreprocessTest.php | 2 ++
.../tests/src/Unit/LatestRevisionCheckTest.php | 2 ++
.../tests/src/Unit/ModerationInformationTest.php | 2 ++
.../tests/src/Unit/StateTransitionValidationTest.php | 2 ++
.../Unit/Access/ContentTranslationManageAccessCheckTest.php | 2 ++
.../src/Unit/Menu/ContentTranslationLocalTasksTest.php | 2 ++
.../tests/src/Unit/Plugin/migrate/field/DateFieldTest.php | 2 ++
.../editor/tests/src/Unit/EditorConfigEntityUnitTest.php | 2 ++
.../editor/tests/src/Unit/EditorXssFilter/StandardTest.php | 2 ++
.../tests/src/Unit/FieldConfigAccessControlHandlerTest.php | 2 ++
.../field/tests/src/Unit/FieldConfigEntityUnitTest.php | 2 ++
.../src/Unit/FieldStorageConfigAccessControlHandlerTest.php | 2 ++
.../tests/src/Unit/FieldStorageConfigEntityUnitTest.php | 2 ++
.../field/tests/src/Unit/FieldUninstallValidatorTest.php | 2 ++
.../src/Unit/Plugin/migrate/process/ProcessFieldTest.php | 2 ++
.../Plugin/migrate/process/d6/FieldInstanceSettingsTest.php | 2 ++
.../Unit/Plugin/migrate/process/d6/FieldSettingsTest.php | 2 ++
.../Plugin/migrate/process/d6/FieldTypeDefaultsTest.php | 2 ++
.../Plugin/migrate/process/d7/FieldInstanceSettingsTest.php | 2 ++
.../Unit/Plugin/migrate/process/d7/FieldSettingsTest.php | 2 ++
.../Plugin/migrate/process/d7/FieldTypeDefaultsTest.php | 2 ++
.../field_layout/tests/src/Unit/FieldLayoutBuilderTest.php | 2 ++
.../field_ui/tests/src/Unit/FieldConfigEditFormTest.php | 2 ++
core/modules/field_ui/tests/src/Unit/FieldUiTableTest.php | 2 ++
core/modules/field_ui/tests/src/Unit/FieldUiTest.php | 2 ++
.../src/Unit/Plugin/migrate/field/d6/FileFieldTest.php | 2 ++
.../src/Unit/Plugin/migrate/field/d7/FileFieldTest.php | 2 ++
.../src/Unit/Plugin/migrate/process/d6/FieldFileTest.php | 2 ++
.../src/Unit/Plugin/migrate/process/d6/FileUriTest.php | 2 ++
core/modules/file/tests/src/Unit/SanitizeNameTest.php | 2 ++
.../Unit/Upload/ContentDispositionFilenameParserTest.php | 2 ++
core/modules/filter/tests/src/Unit/FilterHtmlTest.php | 2 ++
.../filter/tests/src/Unit/FilterImageLazyLoadTest.php | 2 +-
.../filter/tests/src/Unit/FilterUninstallValidatorTest.php | 2 ++
.../src/Unit/Breadcrumb/ForumBreadcrumbBuilderBaseTest.php | 2 ++
.../Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php | 2 ++
.../src/Unit/Breadcrumb/ForumNodeBreadcrumbBuilderTest.php | 2 ++
core/modules/forum/tests/src/Unit/ForumManagerTest.php | 2 ++
.../forum/tests/src/Unit/ForumUninstallValidatorTest.php | 2 ++
core/modules/help/tests/src/Unit/HelpTopicDiscoveryTest.php | 2 ++
.../modules/help/tests/src/Unit/HelpTopicTwigLoaderTest.php | 2 ++
core/modules/help/tests/src/Unit/HelpTopicTwigTest.php | 2 ++
core/modules/image/tests/src/Unit/ImageStyleTest.php | 2 ++
.../Unit/PageCache/DenyPrivateImageStyleDownloadTest.php | 2 ++
.../tests/src/Unit/FormErrorHandlerTest.php | 2 ++
.../Unit/EventSubscriber/ResourceResponseValidatorTest.php | 2 ++
.../jsonapi/tests/src/Unit/JsonApiResource/LinkTest.php | 2 ++
core/modules/jsonapi/tests/src/Unit/JsonApiSpecTest.php | 2 ++
.../src/Unit/Normalizer/HttpExceptionNormalizerTest.php | 2 ++
.../Normalizer/JsonApiDocumentTopLevelNormalizerTest.php | 2 ++
.../Unit/Normalizer/ResourceIdentifierNormalizerTest.php | 2 ++
.../tests/src/Unit/Query/EntityConditionGroupTest.php | 2 ++
.../jsonapi/tests/src/Unit/Query/EntityConditionTest.php | 2 ++
.../modules/jsonapi/tests/src/Unit/Query/OffsetPageTest.php | 2 ++
core/modules/jsonapi/tests/src/Unit/Query/SortTest.php | 2 ++
core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php | 2 ++
.../tests/src/Unit/Config/LanguageConfigOverrideTest.php | 2 ++
.../tests/src/Unit/ConfigurableLanguageUnitTest.php | 2 ++
.../tests/src/Unit/ContentLanguageSettingsUnitTest.php | 2 ++
.../language/tests/src/Unit/LanguageNegotiationUrlTest.php | 2 ++
.../language/tests/src/Unit/Menu/LanguageLocalTasksTest.php | 2 ++
.../LanguageNegotiationContentEntityTest.php | 2 ++
.../LanguageNegotiation/LanguageNegotiationTestBase.php | 2 ++
.../language/tests/src/Unit/process/LanguageDomainsTest.php | 2 ++
.../tests/src/Unit/process/LanguageNegotiationTest.php | 2 ++
.../language/tests/src/Unit/process/LanguageTypesTest.php | 2 ++
.../tests/src/Unit/BlockComponentRenderArrayTest.php | 2 ++
.../tests/src/Unit/DefaultsSectionStorageTest.php | 2 ++
.../layout_builder/tests/src/Unit/InlineBlockUsageTest.php | 2 ++
.../src/Unit/LayoutBuilderIsActiveCacheContextTest.php | 2 ++
.../tests/src/Unit/LayoutBuilderRoutesTest.php | 2 ++
.../tests/src/Unit/LayoutEntityHelperTraitTest.php | 2 ++
.../src/Unit/LayoutSectionStorageParamConverterTest.php | 2 ++
.../tests/src/Unit/LayoutTempstoreRepositoryTest.php | 2 ++
.../tests/src/Unit/LayoutTempstoreRouteEnhancerTest.php | 2 ++
.../tests/src/Unit/OverridesSectionStorageTest.php | 2 ++
.../layout_builder/tests/src/Unit/SectionComponentTest.php | 2 ++
.../layout_builder/tests/src/Unit/SectionRenderTest.php | 2 ++
.../tests/src/Unit/SectionStorageManagerTest.php | 2 ++
core/modules/layout_builder/tests/src/Unit/SectionTest.php | 2 ++
core/modules/link/tests/src/Unit/LinkFormatterTest.php | 2 ++
.../Constraint/LinkAccessConstraintValidatorTest.php | 2 ++
.../LinkExternalProtocolsConstraintValidatorTest.php | 2 ++
.../LinkNotExistingInternalConstraintValidatorTest.php | 2 ++
.../src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php | 2 ++
.../tests/src/Unit/Plugin/migrate/process/FieldLinkTest.php | 2 ++
core/modules/locale/tests/src/Unit/LocaleLookupTest.php | 2 ++
.../modules/locale/tests/src/Unit/LocaleTranslationTest.php | 2 ++
.../locale/tests/src/Unit/Menu/LocaleLocalTasksTest.php | 2 ++
core/modules/locale/tests/src/Unit/StringBaseTest.php | 2 ++
core/modules/media/tests/src/Unit/EndpointTest.php | 2 ++
core/modules/media/tests/src/Unit/IFrameUrlHelperTest.php | 2 ++
.../modules/media/tests/src/Unit/ProviderRepositoryTest.php | 2 ++
core/modules/media/tests/src/Unit/ResourceFetcherTest.php | 2 ++
core/modules/media/tests/src/Unit/ResourceTest.php | 2 ++
.../tests/src/Unit/MediaLibrarySelectFormTest.php | 2 ++
.../tests/src/Unit/MenuLinkContentEntityAccessTest.php | 2 ++
.../menu_link_content/tests/src/Unit/MenuLinkPluginTest.php | 2 ++
core/modules/migrate/tests/src/Unit/Event/EventBaseTest.php | 2 ++
.../migrate/tests/src/Unit/Event/MigrateImportEventTest.php | 2 ++
.../tests/src/Unit/Event/MigratePostRowSaveEventTest.php | 2 ++
.../tests/src/Unit/Event/MigratePreRowSaveEventTest.php | 2 ++
.../tests/src/Unit/Exception/RequirementsExceptionTest.php | 2 ++
.../tests/src/Unit/MigrateExecutableMemoryExceededTest.php | 2 ++
.../migrate/tests/src/Unit/MigrateExecutableTest.php | 2 ++
core/modules/migrate/tests/src/Unit/MigrateLookupTest.php | 2 ++
core/modules/migrate/tests/src/Unit/MigrateSourceTest.php | 2 ++
.../tests/src/Unit/MigrateSqlIdMapEnsureTablesTest.php | 2 ++
core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php | 2 ++
core/modules/migrate/tests/src/Unit/MigrateStubTest.php | 2 ++
core/modules/migrate/tests/src/Unit/MigrateTestCase.php | 2 ++
.../migrate/tests/src/Unit/MigrationPluginManagerTest.php | 2 ++
core/modules/migrate/tests/src/Unit/MigrationTest.php | 2 ++
.../Plugin/migrate/destination/CheckRequirementsTest.php | 2 ++
.../Plugin/migrate/destination/EntityContentBaseTest.php | 2 ++
.../Unit/Plugin/migrate/destination/EntityRevisionTest.php | 2 ++
.../src/Unit/Plugin/migrate/destination/EntityTestBase.php | 2 ++
core/modules/migrate/tests/src/Unit/RowTest.php | 2 ++
core/modules/migrate/tests/src/Unit/SqlBaseTest.php | 2 ++
.../migrate/tests/src/Unit/TestMigrateExecutable.php | 2 ++
core/modules/migrate/tests/src/Unit/TestSqlIdMap.php | 2 ++
.../migrate/tests/src/Unit/destination/ConfigTest.php | 2 ++
.../tests/src/Unit/destination/EntityRevisionTest.php | 2 ++
.../src/Unit/destination/PerComponentEntityDisplayTest.php | 2 ++
.../Unit/destination/PerComponentEntityFormDisplayTest.php | 2 ++
.../migrate/tests/src/Unit/process/ArrayBuildTest.php | 2 ++
.../modules/migrate/tests/src/Unit/process/CallbackTest.php | 2 ++
core/modules/migrate/tests/src/Unit/process/ConcatTest.php | 2 ++
.../migrate/tests/src/Unit/process/DefaultValueTest.php | 2 ++
core/modules/migrate/tests/src/Unit/process/ExplodeTest.php | 2 ++
core/modules/migrate/tests/src/Unit/process/ExtractTest.php | 2 ++
.../modules/migrate/tests/src/Unit/process/FileCopyTest.php | 2 ++
core/modules/migrate/tests/src/Unit/process/FlattenTest.php | 2 ++
.../migrate/tests/src/Unit/process/FormatDateTest.php | 2 ++
core/modules/migrate/tests/src/Unit/process/GetTest.php | 2 ++
core/modules/migrate/tests/src/Unit/process/LogTest.php | 2 ++
.../migrate/tests/src/Unit/process/MachineNameTest.php | 2 ++
.../tests/src/Unit/process/MakeUniqueEntityFieldTest.php | 2 ++
.../migrate/tests/src/Unit/process/MenuLinkParentTest.php | 2 ++
.../tests/src/Unit/process/MigrateProcessTestCase.php | 2 ++
.../migrate/tests/src/Unit/process/MigrationLookupTest.php | 2 ++
.../tests/src/Unit/process/MigrationLookupTestCase.php | 2 ++
.../migrate/tests/src/Unit/process/NullCoalesceTest.php | 2 ++
.../migrate/tests/src/Unit/process/SkipOnEmptyTest.php | 2 ++
.../migrate/tests/src/Unit/process/SkipRowIfNotSetTest.php | 2 ++
.../migrate/tests/src/Unit/process/StaticMapTest.php | 2 ++
.../migrate/tests/src/Unit/process/SubProcessTest.php | 2 ++
core/modules/migrate/tests/src/Unit/process/SubstrTest.php | 2 ++
.../migrate/tests/src/Unit/process/UrlEncodeTest.php | 2 ++
.../migrate_drupal/tests/src/Unit/FieldDiscoveryTest.php | 2 ++
.../tests/src/Unit/MigrateFieldPluginManagerTest.php | 2 ++
.../tests/src/Unit/MigrationConfigurationTraitTest.php | 2 ++
.../tests/src/Unit/MigrationStateUnitTest.php | 2 ++
.../tests/src/Unit/source/DrupalSqlBaseTest.php | 2 ++
.../tests/src/Unit/source/d6/Drupal6SqlBaseTest.php | 2 ++
core/modules/mysql/tests/src/Unit/ConnectionTest.php | 2 ++
core/modules/mysql/tests/src/Unit/InstallTasksTest.php | 2 ++
.../modules/node/tests/src/Unit/NodeOperationAccessTest.php | 2 ++
.../node/tests/src/Unit/PageCache/DenyNodePreviewTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/NodeBulkFormTest.php | 2 ++
.../src/Unit/Plugin/views/field/RevisionLinkDeleteTest.php | 2 ++
.../src/Unit/Plugin/views/field/RevisionLinkRevertTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/RevisionLinkTest.php | 2 ++
.../path/tests/src/Unit/Field/PathFieldDefinitionTest.php | 2 ++
.../src/Unit/migrate/process/PathSetTranslatedTest.php | 2 ++
core/modules/path_alias/tests/src/Unit/AliasManagerTest.php | 2 ++
.../tests/src/Unit/PathProcessor/AliasPathProcessorTest.php | 2 ++
core/modules/pgsql/tests/src/Unit/SchemaTest.php | 2 ++
.../phpass/tests/src/Unit/LegacyPasswordHashingTest.php | 2 ++
core/modules/phpass/tests/src/Unit/PasswordVerifyTest.php | 2 ++
.../src/Unit/ResponsiveImageStyleConfigEntityUnitTest.php | 2 ++
core/modules/rest/tests/src/Unit/CollectRoutesTest.php | 2 ++
.../rest/tests/src/Unit/Entity/RestResourceConfigTest.php | 2 ++
.../tests/src/Unit/EntityResourceValidationTraitTest.php | 2 ++
.../Unit/EventSubscriber/ResourceResponseSubscriberTest.php | 2 ++
.../tests/src/Unit/Plugin/views/style/SerializerTest.php | 2 ++
core/modules/sdc/tests/src/Unit/ComponentMetadataTest.php | 2 ++
core/modules/sdc/tests/src/Unit/ComponentValidatorTest.php | 2 ++
.../sdc/tests/src/Unit/SchemaCompatibilityCheckerTest.php | 2 ++
core/modules/sdc/tests/src/Unit/UtilitiesTest.php | 2 ++
.../search/tests/src/Unit/SearchPageRepositoryTest.php | 2 ++
.../search/tests/src/Unit/SearchPluginCollectionTest.php | 2 ++
.../RegisterSerializationClassesCompilerPassTest.php | 2 ++
.../tests/src/Unit/Encoder/JsonEncoderTest.php | 2 ++
.../serialization/tests/src/Unit/Encoder/XmlEncoderTest.php | 2 ++
.../src/Unit/EntityResolver/ChainEntityResolverTest.php | 2 ++
.../tests/src/Unit/EntityResolver/UuidResolverTest.php | 2 ++
.../Unit/EventSubscriber/DefaultExceptionSubscriberTest.php | 2 ++
.../tests/src/Unit/Normalizer/ComplexDataNormalizerTest.php | 2 ++
.../src/Unit/Normalizer/ConfigEntityNormalizerTest.php | 2 ++
.../src/Unit/Normalizer/ContentEntityNormalizerTest.php | 2 ++
.../src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php | 2 ++
.../tests/src/Unit/Normalizer/DateTimeNormalizerTest.php | 2 ++
.../tests/src/Unit/Normalizer/EntityNormalizerTest.php | 2 ++
.../Normalizer/EntityReferenceFieldItemNormalizerTest.php | 2 ++
.../src/Unit/Normalizer/InternalTypedDataTestTrait.php | 2 ++
.../tests/src/Unit/Normalizer/ListNormalizerTest.php | 2 ++
.../tests/src/Unit/Normalizer/NormalizerBaseTest.php | 2 ++
.../tests/src/Unit/Normalizer/NullNormalizerTest.php | 2 ++
.../src/Unit/Normalizer/PrimitiveDataNormalizerTest.php | 2 ++
.../src/Unit/Normalizer/TimestampItemNormalizerTest.php | 2 ++
.../tests/src/Unit/Normalizer/TimestampNormalizerTest.php | 2 ++
.../tests/src/Unit/Normalizer/TypedDataNormalizerTest.php | 2 ++
.../BlockPluginHasSettingsTrayFormAccessCheckTest.php | 2 ++
.../shortcut/tests/src/Unit/Menu/ShortcutLocalTasksTest.php | 2 ++
core/modules/sqlite/tests/src/Unit/ConnectionTest.php | 2 ++
.../statistics/tests/src/Unit/StatisticsViewsResultTest.php | 2 ++
.../system/tests/src/Unit/Batch/BatchControllerTest.php | 2 ++
.../src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php | 2 ++
.../Unit/Event/SecurityFileUploadEventSubscriberTest.php | 2 ++
.../modules/system/tests/src/Unit/Menu/MenuLinkTreeTest.php | 2 ++
.../system/tests/src/Unit/Menu/SystemLocalTasksTest.php | 2 ++
.../system/tests/src/Unit/Pager/PreprocessPagerTest.php | 2 ++
.../tests/src/Unit/Routing/AdminRouteSubscriberTest.php | 2 ++
.../src/Unit/SecurityAdvisories/SecurityAdvisoryTest.php | 2 ++
core/modules/system/tests/src/Unit/TraitAccessTest.php | 2 ++
.../src/Unit/Transliteration/MachineNameControllerTest.php | 2 ++
.../taxonomy/tests/src/Unit/Menu/TaxonomyLocalTasksTest.php | 2 ++
.../Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php | 2 ++
.../src/Unit/Plugin/migrate/field/d6/TextFieldTest.php | 2 ++
.../src/Unit/Plugin/migrate/field/d7/TextFieldTest.php | 2 ++
.../tests/src/Unit/PageCache/AllowToolbarPathTest.php | 2 ++
core/modules/tour/tests/src/Unit/Entity/TourTest.php | 2 ++
core/modules/tour/tests/src/Unit/TipPluginBaseTest.php | 2 ++
.../update/tests/src/Unit/Menu/UpdateLocalTasksTest.php | 2 ++
.../update/tests/src/Unit/ProjectCoreCompatibilityTest.php | 2 ++
core/modules/update/tests/src/Unit/ProjectReleaseTest.php | 2 ++
core/modules/update/tests/src/Unit/UpdateFetcherTest.php | 2 ++
core/modules/update/tests/src/Unit/UpdateMailTest.php | 2 ++
.../user/tests/src/Unit/Form/EntityPermissionsFormTest.php | 2 ++
.../modules/user/tests/src/Unit/Menu/UserLocalTasksTest.php | 2 ++
.../user/tests/src/Unit/PermissionAccessCheckTest.php | 2 ++
core/modules/user/tests/src/Unit/PermissionHandlerTest.php | 2 ++
.../user/tests/src/Unit/Plugin/Action/AddRoleUserTest.php | 2 ++
.../tests/src/Unit/Plugin/Action/RemoveRoleUserTest.php | 2 ++
.../user/tests/src/Unit/Plugin/Action/RoleUserTestBase.php | 2 ++
.../user/tests/src/Unit/Plugin/Core/Entity/UserTest.php | 2 ++
.../tests/src/Unit/Plugin/Derivative/UserLocalTaskTest.php | 2 ++
.../ProtectedUserFieldConstraintValidatorTest.php | 2 ++
.../Validation/Constraint/UserMailRequiredValidatorTest.php | 2 ++
.../src/Unit/Plugin/migrate/process/ConvertTokensTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/PermissionsTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/UserBulkFormTest.php | 2 ++
.../user/tests/src/Unit/Theme/AdminNegotiatorTest.php | 2 ++
core/modules/user/tests/src/Unit/ToolbarLinkBuilderTest.php | 2 ++
.../user/tests/src/Unit/UserAccessControlHandlerTest.php | 2 ++
core/modules/user/tests/src/Unit/UserAuthTest.php | 2 ++
core/modules/user/tests/src/Unit/UserNameItemTest.php | 2 ++
.../user/tests/src/Unit/UserRegistrationResourceTest.php | 2 ++
.../user/tests/src/Unit/Views/Argument/RolesRidTest.php | 2 ++
.../tests/src/Unit/Controller/ViewAjaxControllerTest.php | 2 ++
.../tests/src/Unit/EventSubscriber/RouteSubscriberTest.php | 2 ++
.../views/tests/src/Unit/Plugin/Block/ViewsBlockTest.php | 2 ++
.../tests/src/Unit/Plugin/Derivative/ViewsLocalTaskTest.php | 2 ++
.../modules/views/tests/src/Unit/Plugin/HandlerBaseTest.php | 2 ++
.../views/tests/src/Unit/Plugin/HandlerTestTrait.php | 2 ++
.../modules/views/tests/src/Unit/Plugin/area/EntityTest.php | 2 ++
.../views/tests/src/Unit/Plugin/area/MessagesTest.php | 2 ++
.../modules/views/tests/src/Unit/Plugin/area/ResultTest.php | 2 ++
core/modules/views/tests/src/Unit/Plugin/area/ViewTest.php | 2 ++
.../src/Unit/Plugin/argument_default/QueryParameterTest.php | 2 ++
.../tests/src/Unit/Plugin/argument_default/RawTest.php | 2 ++
.../tests/src/Unit/Plugin/argument_validator/EntityTest.php | 2 ++
.../views/tests/src/Unit/Plugin/display/PageTest.php | 2 ++
.../tests/src/Unit/Plugin/display/PathPluginBaseTest.php | 2 ++
.../views/tests/src/Unit/Plugin/field/CounterTest.php | 2 ++
.../tests/src/Unit/Plugin/field/FieldPluginBaseTest.php | 2 ++
.../modules/views/tests/src/Unit/Plugin/field/FieldTest.php | 2 ++
.../tests/src/Unit/Plugin/filter/FilterPluginBaseTest.php | 2 ++
.../views/tests/src/Unit/Plugin/filter/InOperatorTest.php | 2 ++
.../tests/src/Unit/Plugin/pager/PagerPluginBaseTest.php | 2 ++
.../views/tests/src/Unit/Plugin/pager/SqlBaseTest.php | 2 ++
core/modules/views/tests/src/Unit/Plugin/query/SqlTest.php | 2 ++
.../views/tests/src/Unit/Plugin/views/display/BlockTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/BulkFormTest.php | 2 ++
.../Unit/Plugin/views/field/EntityOperationsUnitTest.php | 2 ++
.../tests/src/Unit/Plugin/views/field/LinkBaseTest.php | 2 ++
.../src/Unit/Plugin/views/field/RenderedEntityTest.php | 2 ++
.../tests/src/Unit/Plugin/views/query/MysqlDateSqlTest.php | 2 ++
.../src/Unit/Plugin/views/query/PostgresqlDateSqlTest.php | 2 ++
.../tests/src/Unit/Plugin/views/query/SqliteDateSqlTest.php | 2 ++
core/modules/views/tests/src/Unit/PluginBaseTest.php | 2 ++
core/modules/views/tests/src/Unit/PluginTypeListTest.php | 2 ++
.../views/tests/src/Unit/Routing/ViewPageControllerTest.php | 2 ++
.../views/tests/src/Unit/ViewExecutableFactoryTest.php | 2 ++
core/modules/views/tests/src/Unit/ViewExecutableTest.php | 2 ++
core/modules/views/tests/src/Unit/ViewsDataHelperTest.php | 2 ++
core/modules/views/tests/src/Unit/ViewsDataTest.php | 2 ++
.../views/tests/src/Unit/ViewsHandlerManagerTest.php | 2 ++
core/modules/views/tests/src/Unit/ViewsTest.php | 2 ++
core/modules/views/tests/src/Unit/WizardPluginBaseTest.php | 2 ++
.../tests/src/Unit/Form/Ajax/RearrangeFilterTest.php | 2 ++
.../modules/views_ui/tests/src/Unit/ViewListBuilderTest.php | 2 ++
core/modules/views_ui/tests/src/Unit/ViewUIObjectTest.php | 2 ++
core/modules/workflows/tests/src/Unit/StateTest.php | 2 ++
core/modules/workflows/tests/src/Unit/TransitionTest.php | 2 ++
.../WorkflowStateTransitionOperationsAccessCheckTest.php | 2 ++
core/modules/workflows/tests/src/Unit/WorkflowTest.php | 2 ++
.../workspaces/tests/src/Unit/ActiveWorkspaceCheckTest.php | 2 ++
.../tests/src/Unit/WorkspaceRequestSubscriberTest.php | 2 ++
core/phpcs.xml.dist | 4 ++++
core/tests/Drupal/Tests/CSpell/SortTest.php | 2 ++
.../Annotation/AnnotatedClassDiscoveryCachedTest.php | 2 ++
.../Component/Annotation/AnnotatedClassDiscoveryTest.php | 2 ++
.../Tests/Component/Annotation/AnnotationBaseTest.php | 2 ++
.../Component/Annotation/DocParserIgnoredClassesTest.php | 2 ++
.../Tests/Component/Annotation/Doctrine/DocParserTest.php | 2 ++
.../Doctrine/Fixtures/Annotation/AnnotWithDefaultValue.php | 2 ++
.../Annotation/Doctrine/Fixtures/Annotation/Autoload.php | 2 ++
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.../Component/Discovery/YamlDirectoryDiscoveryTest.php | 2 ++
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core/tests/Drupal/Tests/Component/Utility/UserAgentTest.php | 2 ++
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core/tests/Drupal/Tests/Component/Utility/XssTest.php | 2 ++
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core/tests/Drupal/Tests/Composer/ComposerTest.php | 2 ++
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.../Plugin/Scaffold/Functional/ComposerHookTest.php | 2 ++
.../Plugin/Scaffold/Functional/ManageGitIgnoreTest.php | 2 ++
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core/tests/Drupal/Tests/Core/Access/CsrfAccessCheckTest.php | 2 ++
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.../Drupal/Tests/Core/Access/RouteProcessorCsrfTest.php | 2 ++
core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php | 2 ++
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.../Drupal/Tests/Core/Annotation/PluralTranslationTest.php | 2 ++
core/tests/Drupal/Tests/Core/Annotation/TranslationTest.php | 2 ++
core/tests/Drupal/Tests/Core/Asset/AssetResolverTest.php | 2 ++
.../Tests/Core/Asset/CssCollectionGrouperUnitTest.php | 2 ++
.../Tests/Core/Asset/CssCollectionOptimizerLazyUnitTest.php | 2 ++
.../Tests/Core/Asset/CssCollectionOptimizerUnitTest.php | 2 ++
.../Tests/Core/Asset/CssCollectionRendererUnitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php | 2 ++
.../Tests/Core/Asset/LibrariesDirectoryFileFinderTest.php | 2 ++
.../Tests/Core/Asset/LibraryDependencyResolverTest.php | 2 ++
.../Tests/Core/Asset/LibraryDiscoveryCollectorTest.php | 2 ++
.../Drupal/Tests/Core/Asset/LibraryDiscoveryParserTest.php | 2 ++
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.../Core/Authentication/AuthenticationCollectorTest.php | 2 ++
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core/tests/Drupal/Tests/Core/Batch/BatchBuilderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Batch/PercentagesTest.php | 2 ++
core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php | 2 ++
core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php | 2 ++
.../Drupal/Tests/Core/Breadcrumb/BreadcrumbManagerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbTest.php | 2 ++
.../Tests/Core/Cache/BackendChainImplementationUnitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Cache/CacheCollectorHelper.php | 2 ++
core/tests/Drupal/Tests/Core/Cache/CacheCollectorTest.php | 2 ++
core/tests/Drupal/Tests/Core/Cache/CacheFactoryTest.php | 2 ++
.../Drupal/Tests/Core/Cache/CacheTagsInvalidatorTest.php | 2 ++
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.../tests/Drupal/Tests/Core/Cache/CacheableMetadataTest.php | 2 ++
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.../Tests/Core/Cache/Context/CookieCacheContextTest.php | 2 ++
.../Tests/Core/Cache/Context/HeadersCacheContextTest.php | 2 ++
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.../Tests/Core/Cache/Context/SessionCacheContextTest.php | 2 ++
.../Tests/Core/Cache/Context/UserRolesCacheContextTest.php | 2 ++
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.../Core/Database/DriverModuleMissingDependenciesTest.php | 2 ++
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core/tests/Drupal/Tests/Core/Database/LogTest.php | 6 ++++--
core/tests/Drupal/Tests/Core/Database/OrderByTest.php | 2 ++
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.../tests/Drupal/Tests/Core/Database/Stub/Driver/Schema.php | 2 ++
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core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php | 2 ++
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.../tests/Drupal/Tests/Core/Datetime/DrupalDateTimeTest.php | 2 ++
.../Drupal/Tests/Core/Datetime/TimeZoneFormHelperTest.php | 2 ++
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.../Tests/Core/DependencyInjection/ContainerBuilderTest.php | 2 ++
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.../Tests/Core/DependencyInjection/YamlFileLoaderTest.php | 2 ++
.../tests/Drupal/Tests/Core/Discovery/YamlDiscoveryTest.php | 2 ++
core/tests/Drupal/Tests/Core/Display/DisplayVariantTest.php | 2 ++
.../Core/DrupalKernel/DiscoverServiceProvidersTest.php | 2 ++
.../Drupal/Tests/Core/DrupalKernel/DrupalKernelTest.php | 2 ++
.../Drupal/Tests/Core/DrupalKernel/ValidateHostnameTest.php | 2 ++
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.../Tests/Core/Enhancer/ParamConversionEnhancerTest.php | 2 ++
.../Access/EntityFormDisplayAccessControlHandlerTest.php | 2 ++
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.../Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php | 2 ++
.../Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php | 2 ++
.../Drupal/Tests/Core/Entity/EntityAccessCheckTest.php | 2 ++
.../Tests/Core/Entity/EntityConstraintViolationListTest.php | 2 ++
.../Tests/Core/Entity/EntityCreateAccessCheckTest.php | 2 ++
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.../Drupal/Tests/Core/Entity/EntityFormBuilderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Entity/EntityFormTest.php | 2 ++
core/tests/Drupal/Tests/Core/Entity/EntityLinkTest.php | 2 ++
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.../tests/Drupal/Tests/Core/Entity/EntityRepositoryTest.php | 2 ++
.../Drupal/Tests/Core/Entity/EntityResolverManagerTest.php | 2 ++
.../Drupal/Tests/Core/Entity/EntityStorageBaseTest.php | 2 ++
.../Drupal/Tests/Core/Entity/EntityTypeBundleInfoTest.php | 2 ++
.../Drupal/Tests/Core/Entity/EntityTypeManagerTest.php | 2 ++
.../Drupal/Tests/Core/Entity/EntityTypeRepositoryTest.php | 2 ++
core/tests/Drupal/Tests/Core/Entity/EntityTypeTest.php | 2 ++
core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Entity/EntityUrlTest.php | 2 ++
core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php | 2 ++
.../Core/Entity/KeyValueStore/KeyValueEntityStorageTest.php | 2 ++
core/tests/Drupal/Tests/Core/Entity/Query/Sql/QueryTest.php | 2 ++
.../Core/Entity/Routing/DefaultHtmlRouteProviderTest.php | 2 ++
.../Tests/Core/Entity/Sql/DefaultTableMappingTest.php | 2 ++
.../Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php | 2 ++
.../Tests/Core/Entity/Sql/SqlContentEntityStorageTest.php | 2 ++
.../Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php | 2 ++
.../Core/EventSubscriber/ActiveLinkResponseFilterTest.php | 2 ++
.../CustomPageExceptionHtmlSubscriberTest.php | 2 ++
.../Core/EventSubscriber/ExceptionJsonSubscriberTest.php | 2 ++
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.../Core/EventSubscriber/OptionsRequestSubscriberTest.php | 2 ++
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.../Core/EventSubscriber/PsrResponseSubscriberTest.php | 2 ++
.../Core/EventSubscriber/RedirectResponseSubscriberTest.php | 2 ++
.../EventSubscriber/RssResponseRelativeUrlFilterTest.php | 2 ++
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.../Drupal/Tests/Core/Extension/DatabaseDriverListTest.php | 2 ++
.../tests/Drupal/Tests/Core/Extension/DefaultConfigTest.php | 2 ++
core/tests/Drupal/Tests/Core/Extension/DependencyTest.php | 2 ++
.../Drupal/Tests/Core/Extension/ExtensionDiscoveryTest.php | 2 ++
.../tests/Drupal/Tests/Core/Extension/ExtensionListTest.php | 2 ++
.../Tests/Core/Extension/ExtensionSerializationTest.php | 2 ++
.../Drupal/Tests/Core/Extension/ExtensionVersionTest.php | 2 ++
.../Drupal/Tests/Core/Extension/GenericTestExistsTest.php | 2 ++
.../Drupal/Tests/Core/Extension/InfoParserUnitTest.php | 2 ++
.../Drupal/Tests/Core/Extension/LegacyExtensionTest.php | 2 ++
.../tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Extension/ModuleInfoTest.php | 2 ++
.../ModuleRequiredByThemesUninstallValidatorTest.php | 2 ++
.../Core/Extension/RequiredModuleUninstallValidatorTest.php | 2 ++
.../Drupal/Tests/Core/Extension/ThemeExtensionListTest.php | 2 ++
core/tests/Drupal/Tests/Core/Extension/ThemeHandlerTest.php | 2 ++
.../Drupal/Tests/Core/Field/BaseFieldDefinitionTestBase.php | 2 ++
.../Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php | 2 ++
.../Drupal/Tests/Core/Field/FieldFilteredMarkupTest.php | 2 ++
.../Tests/Core/Field/FieldInputValueNormalizerTraitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Field/FieldItemListTest.php | 2 ++
.../Drupal/Tests/Core/Field/FieldTypePluginManagerTest.php | 2 ++
.../tests/Drupal/Tests/Core/Field/InternalViolationTest.php | 2 ++
.../Drupal/Tests/Core/Field/PluginSettingsBaseTest.php | 2 ++
core/tests/Drupal/Tests/Core/Field/StringItemTest.php | 2 ++
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core/tests/Drupal/Tests/Core/Field/UriItemTest.php | 2 ++
core/tests/Drupal/Tests/Core/File/FileSystemTest.php | 2 ++
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core/tests/Drupal/Tests/Core/Flood/MemoryBackendTest.php | 2 ++
.../Drupal/Tests/Core/Form/ConfigFormBaseTraitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Form/ConfigTargetTest.php | 2 ++
core/tests/Drupal/Tests/Core/Form/ConfirmFormHelperTest.php | 2 ++
.../Core/Form/EventSubscriber/FormAjaxSubscriberTest.php | 2 ++
.../Drupal/Tests/Core/Form/FormAjaxResponseBuilderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Form/FormCacheTest.php | 2 ++
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.../Drupal/Tests/Core/Form/FormStateDecoratorBaseTest.php | 2 ++
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core/tests/Drupal/Tests/Core/Form/FormValidatorTest.php | 2 ++
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core/tests/Drupal/Tests/Core/Image/ImageTest.php | 2 ++
core/tests/Drupal/Tests/Core/Language/LanguageUnitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Layout/LayoutDefaultTest.php | 2 ++
.../Drupal/Tests/Core/Layout/LayoutPluginManagerTest.php | 2 ++
.../Listeners/DrupalStandardsListenerDeprecationTest.php | 2 ++
.../Drupal/Tests/Core/Lock/LockBackendAbstractTest.php | 2 ++
.../tests/Drupal/Tests/Core/Logger/LogMessageParserTest.php | 2 ++
.../Drupal/Tests/Core/Logger/LoggerChannelFactoryTest.php | 2 ++
core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php | 2 ++
core/tests/Drupal/Tests/Core/Mail/MailFormatHelperTest.php | 2 ++
core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php | 2 ++
.../Drupal/Tests/Core/Mail/Plugin/Mail/PhpMailTest.php | 2 ++
.../Tests/Core/Mail/Plugin/Mail/SymfonyMailerTest.php | 2 ++
.../Drupal/Tests/Core/Menu/ContextualLinkDefaultTest.php | 2 ++
.../Drupal/Tests/Core/Menu/ContextualLinkManagerTest.php | 2 ++
.../Tests/Core/Menu/DefaultMenuLinkTreeManipulatorsTest.php | 2 ++
core/tests/Drupal/Tests/Core/Menu/DynamicMenuLinkMock.php | 2 ++
.../tests/Drupal/Tests/Core/Menu/LocalActionDefaultTest.php | 2 ++
.../tests/Drupal/Tests/Core/Menu/LocalActionManagerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Menu/LocalTaskDefaultTest.php | 2 ++
.../Drupal/Tests/Core/Menu/LocalTaskIntegrationTestBase.php | 2 ++
core/tests/Drupal/Tests/Core/Menu/LocalTaskManagerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php | 2 ++
.../Drupal/Tests/Core/Menu/MenuLinkDefaultFormTest.php | 2 ++
core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultTest.php | 2 ++
core/tests/Drupal/Tests/Core/Menu/MenuLinkMock.php | 2 ++
.../Drupal/Tests/Core/Menu/MenuLinkTreeElementTest.php | 2 ++
.../tests/Drupal/Tests/Core/Menu/MenuTreeParametersTest.php | 2 ++
.../Drupal/Tests/Core/Menu/StaticMenuLinkOverridesTest.php | 2 ++
.../Drupal/Tests/Core/PageCache/ChainRequestPolicyTest.php | 2 ++
.../Drupal/Tests/Core/PageCache/ChainResponsePolicyTest.php | 2 ++
.../Tests/Core/PageCache/CommandLineOrUnsafeMethodTest.php | 2 ++
.../tests/Drupal/Tests/Core/PageCache/NoSessionOpenTest.php | 2 ++
.../Tests/Core/ParamConverter/EntityConverterTest.php | 2 ++
.../ParamConverter/EntityRevisionParamConverterTest.php | 2 ++
.../Tests/Core/ParamConverter/ParamConverterManagerTest.php | 2 ++
.../Tests/Core/Password/DefaultPasswordGeneratorTest.php | 2 ++
.../Tests/Core/Password/PasswordHashingLegacyTest.php | 2 ++
core/tests/Drupal/Tests/Core/Password/PhpPasswordTest.php | 2 ++
core/tests/Drupal/Tests/Core/Path/PathMatcherTest.php | 2 ++
core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php | 2 ++
.../Tests/Core/PathProcessor/PathProcessorFrontTest.php | 2 ++
.../Drupal/Tests/Core/PathProcessor/PathProcessorTest.php | 2 ++
.../Core/Plugin/CategorizingPluginManagerTraitTest.php | 2 ++
.../Plugin/Context/ContextDefinitionIsSatisfiedTest.php | 2 ++
.../Tests/Core/Plugin/Context/ContextDefinitionTest.php | 2 ++
core/tests/Drupal/Tests/Core/Plugin/Context/ContextTest.php | 2 ++
.../Context/EntityContextDefinitionIsSatisfiedTest.php | 2 ++
.../Tests/Core/Plugin/Context/LazyContextRepositoryTest.php | 2 ++
core/tests/Drupal/Tests/Core/Plugin/ContextHandlerTest.php | 2 ++
.../Tests/Core/Plugin/DefaultLazyPluginCollectionTest.php | 2 ++
.../Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php | 2 ++
.../Core/Plugin/DefaultSingleLazyPluginCollectionTest.php | 2 ++
.../Discovery/ContainerDerivativeDiscoveryDecoratorTest.php | 2 ++
.../Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php | 2 ++
.../Tests/Core/Plugin/Discovery/HookDiscoveryTest.php | 2 ++
.../Plugin/Discovery/TestContainerDerivativeDiscovery.php | 2 ++
.../Tests/Core/Plugin/Discovery/TestDerivativeDiscovery.php | 2 ++
.../Plugin/Discovery/TestDerivativeDiscoveryWithObject.php | 2 ++
.../Core/Plugin/Discovery/YamlDirectoryDiscoveryTest.php | 2 ++
.../Core/Plugin/Discovery/YamlDiscoveryDecoratorTest.php | 2 ++
.../Tests/Core/Plugin/Discovery/YamlDiscoveryTest.php | 2 ++
.../Tests/Core/Plugin/FilteredPluginManagerTraitTest.php | 2 ++
.../Core/Plugin/Fixtures/InheritedContextDefinition.php | 2 ++
.../Core/Plugin/Fixtures/Plugin/DataType/TestDataType.php | 2 ++
.../Plugin/Fixtures/Plugin/DataType/TestDataTypeDeriver.php | 2 ++
.../Tests/Core/Plugin/Fixtures/TestConfigurablePlugin.php | 2 ++
.../Tests/Core/Plugin/LazyPluginCollectionTestBase.php | 2 ++
.../Drupal/Tests/Core/Plugin/PluginDependencyTraitTest.php | 2 ++
.../Drupal/Tests/Core/Plugin/PluginExistsConstraintTest.php | 2 ++
.../Drupal/Tests/Core/Plugin/PluginFormFactoryTest.php | 2 ++
.../Drupal/Tests/Core/Plugin/PluginWithFormsTraitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Plugin/TestPluginManager.php | 2 ++
core/tests/Drupal/Tests/Core/PrivateKeyTest.php | 2 ++
.../Drupal/Tests/Core/ProxyBuilder/ProxyBuilderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Queue/QueueExceptionsTest.php | 2 ++
.../Drupal/Tests/Core/Render/BubbleableMetadataTest.php | 2 ++
core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php | 2 ++
.../Drupal/Tests/Core/Render/Element/MachineNameTest.php | 2 ++
.../Tests/Core/Render/Element/PasswordConfirmTest.php | 2 ++
.../tests/Drupal/Tests/Core/Render/Element/PasswordTest.php | 2 ++
.../Drupal/Tests/Core/Render/Element/RenderElementTest.php | 2 ++
.../Drupal/Tests/Core/Render/Element/TableSelectTest.php | 2 ++
.../tests/Drupal/Tests/Core/Render/Element/TextareaTest.php | 2 ++
.../Drupal/Tests/Core/Render/Element/TextfieldTest.php | 2 ++
core/tests/Drupal/Tests/Core/Render/Element/TokenTest.php | 2 ++
.../Drupal/Tests/Core/Render/ElementInfoManagerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Render/ElementTest.php | 2 ++
.../Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php | 2 ++
.../Render/Placeholder/ChainedPlaceholderStrategyTest.php | 2 ++
.../Drupal/Tests/Core/Render/PlaceholderGeneratorTest.php | 2 ++
.../tests/Drupal/Tests/Core/Render/RendererBubblingTest.php | 2 ++
.../tests/Drupal/Tests/Core/Render/RendererCallbackTest.php | 2 ++
.../Drupal/Tests/Core/Render/RendererPlaceholdersTest.php | 2 ++
.../Drupal/Tests/Core/Render/RendererRecursionTest.php | 2 ++
core/tests/Drupal/Tests/Core/Render/RendererTest.php | 2 ++
core/tests/Drupal/Tests/Core/Render/RendererTestBase.php | 2 ++
.../Drupal/Tests/Core/Render/TestCacheableDependency.php | 2 ++
core/tests/Drupal/Tests/Core/Route/RoleAccessCheckTest.php | 2 ++
.../Tests/Core/RouteProcessor/RouteProcessorManagerTest.php | 2 ++
.../Drupal/Tests/Core/Routing/AcceptHeaderMatcherTest.php | 2 ++
.../Drupal/Tests/Core/Routing/AccessAwareRouterTest.php | 2 ++
.../Tests/Core/Routing/ContentTypeHeaderMatcherTest.php | 2 ++
.../Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php | 2 ++
.../Drupal/Tests/Core/Routing/LazyRouteCollectionTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/MethodFilterTest.php | 2 ++
.../Drupal/Tests/Core/Routing/PathChangedHelperTest.php | 2 ++
.../Drupal/Tests/Core/Routing/RedirectDestinationTest.php | 2 ++
.../Tests/Core/Routing/RequestFormatRouteFilterTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/RouteBuilderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/RouteCompilerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/RouteMatchTestBase.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/RoutePreloaderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/RouterTest.php | 2 ++
.../Drupal/Tests/Core/Routing/RouterUnsupportedTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/RoutingFixtures.php | 2 ++
.../tests/Drupal/Tests/Core/Routing/TestRouterInterface.php | 2 ++
.../Tests/Core/Routing/TrustedRedirectResponseTest.php | 2 ++
core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTest.php | 2 ++
.../Tests/Core/Security/DoTrustedCallbackTraitTest.php | 2 ++
.../Drupal/Tests/Core/Security/RequestSanitizerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Serialization/YamlTest.php | 2 ++
.../Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php | 2 ++
core/tests/Drupal/Tests/Core/Session/AccountProxyTest.php | 2 ++
.../Drupal/Tests/Core/Session/AnonymousUserSessionTest.php | 2 ++
.../Tests/Core/Session/CalculatedPermissionsItemTest.php | 2 ++
.../Drupal/Tests/Core/Session/CalculatedPermissionsTest.php | 2 ++
core/tests/Drupal/Tests/Core/Session/MetadataBagTest.php | 2 ++
.../Tests/Core/Session/PermissionsHashGeneratorTest.php | 2 ++
.../Core/Session/RefinableCalculatedPermissionsTest.php | 2 ++
.../Drupal/Tests/Core/Session/SessionConfigurationTest.php | 2 ++
core/tests/Drupal/Tests/Core/Session/UserSessionTest.php | 2 ++
.../Tests/Core/Session/WriteSafeSessionHandlerTest.php | 2 ++
core/tests/Drupal/Tests/Core/Site/SettingsTest.php | 2 ++
.../Core/StackMiddleware/NegotiationMiddlewareTest.php | 2 ++
.../Core/StackMiddleware/ReverseProxyMiddlewareTest.php | 2 ++
.../Tests/Core/StringTranslation/ByteSizeMarkupTest.php | 2 ++
.../Core/StringTranslation/PluralTranslatableMarkupTest.php | 2 ++
.../Core/StringTranslation/StringTranslationTraitTest.php | 2 ++
.../Tests/Core/StringTranslation/TranslatableMarkupTest.php | 2 ++
.../Tests/Core/StringTranslation/TranslationManagerTest.php | 2 ++
.../Tests/Core/StringTranslation/TranslationWrapperTest.php | 2 ++
.../Drupal/Tests/Core/TempStore/PrivateTempStoreTest.php | 2 ++
.../Drupal/Tests/Core/TempStore/SharedTempStoreTest.php | 2 ++
.../Drupal/Tests/Core/Template/AttributeHelperTest.php | 2 ++
core/tests/Drupal/Tests/Core/Template/AttributeTest.php | 2 ++
.../Tests/Core/Template/Loader/ThemeRegistryLoaderTest.php | 2 ++
core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php | 2 ++
core/tests/Drupal/Tests/Core/Template/TwigSandboxTest.php | 2 ++
.../tests/Drupal/Tests/Core/Test/AssertContentTraitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/BrowserTestBaseTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/JUnitConverterTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/PhpUnitAutoloaderTest.php | 2 ++
.../Drupal/Tests/Core/Test/PhpUnitBridgeIsolatedTest.php | 2 ++
.../Drupal/Tests/Core/Test/PhpUnitBridgeRequiresTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/PhpUnitCliTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/PhpUnitTestRunnerTest.php | 2 ++
.../Drupal/Tests/Core/Test/RunTests/TestFileParserTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/TestDatabaseTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/TestDiscoveryTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php | 2 ++
core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php | 2 ++
.../tests/Drupal/Tests/Core/Test/XdebugRequestTraitTest.php | 2 ++
.../Drupal/Tests/Core/Theme/AjaxBasePageNegotiatorTest.php | 2 ++
.../Tests/Core/Theme/CoreThemesAutoloadedForTests.php | 2 ++
core/tests/Drupal/Tests/Core/Theme/RegistryTest.php | 2 ++
core/tests/Drupal/Tests/Core/Theme/ThemeNegotiatorTest.php | 2 ++
.../Tests/Core/Transliteration/PhpTransliterationTest.php | 2 ++
.../Core/TypedData/RecursiveContextualValidatorTest.php | 2 ++
core/tests/Drupal/Tests/Core/UnroutedUrlTest.php | 2 ++
.../Drupal/Tests/Core/Update/UpdateHookRegistryTest.php | 2 ++
core/tests/Drupal/Tests/Core/Update/UpdateRegistryTest.php | 2 ++
core/tests/Drupal/Tests/Core/UrlTest.php | 2 ++
.../Drupal/Tests/Core/Utility/CallableResolverTest.php | 2 ++
core/tests/Drupal/Tests/Core/Utility/ErrorTest.php | 2 ++
core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php | 2 ++
.../tests/Drupal/Tests/Core/Utility/PhpRequirementsTest.php | 2 ++
core/tests/Drupal/Tests/Core/Utility/TokenTest.php | 2 ++
.../Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php | 2 ++
.../Constraint/PrimitiveTypeConstraintValidatorTest.php | 2 ++
core/tests/Drupal/Tests/PhpCs/SortTest.php | 2 ++
core/tests/Drupal/Tests/Scripts/TestSiteApplicationTest.php | 2 ++
core/themes/olivero/tests/src/Unit/OliveroHexToHslTest.php | 2 ++
900 files changed, 1800 insertions(+), 6 deletions(-)
diff --git a/core/modules/action/tests/src/Unit/Menu/ActionLocalTasksTest.php b/core/modules/action/tests/src/Unit/Menu/ActionLocalTasksTest.php
index 04f1cf99c217..08a2ac0752f7 100644
--- a/core/modules/action/tests/src/Unit/Menu/ActionLocalTasksTest.php
+++ b/core/modules/action/tests/src/Unit/Menu/ActionLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\action\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/announcements_feed/tests/src/Unit/AnnounceFetcherUnitTest.php b/core/modules/announcements_feed/tests/src/Unit/AnnounceFetcherUnitTest.php
index 5177a0255dd7..6e8f9097fb29 100644
--- a/core/modules/announcements_feed/tests/src/Unit/AnnounceFetcherUnitTest.php
+++ b/core/modules/announcements_feed/tests/src/Unit/AnnounceFetcherUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\announcements_feed\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/ban/tests/src/Unit/BanMiddlewareTest.php b/core/modules/ban/tests/src/Unit/BanMiddlewareTest.php
index 42d61eee5ae4..4b43d161715e 100644
--- a/core/modules/ban/tests/src/Unit/BanMiddlewareTest.php
+++ b/core/modules/ban/tests/src/Unit/BanMiddlewareTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\ban\Unit;
use Drupal\ban\BanMiddleware;
diff --git a/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php b/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php
index 32ddc51fc297..964154eb5ce8 100644
--- a/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php
+++ b/core/modules/big_pipe/tests/src/Unit/Render/BigPipeResponseAttachmentsProcessorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\big_pipe\Unit\Render;
use Drupal\big_pipe\Render\BigPipeResponse;
diff --git a/core/modules/big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php b/core/modules/big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php
index 657ee25e8560..c3c7be0a9e34 100644
--- a/core/modules/big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php
+++ b/core/modules/big_pipe/tests/src/Unit/Render/FiberPlaceholderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\big_pipe\Unit\Render;
use Drupal\big_pipe\Render\BigPipe;
diff --git a/core/modules/big_pipe/tests/src/Unit/Render/ManyPlaceholderTest.php b/core/modules/big_pipe/tests/src/Unit/Render/ManyPlaceholderTest.php
index 9849e116cfa0..44c6e2688668 100644
--- a/core/modules/big_pipe/tests/src/Unit/Render/ManyPlaceholderTest.php
+++ b/core/modules/big_pipe/tests/src/Unit/Render/ManyPlaceholderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\big_pipe\Unit\Render;
use Drupal\big_pipe\Render\BigPipe;
diff --git a/core/modules/big_pipe/tests/src/Unit/Render/Placeholder/BigPipeStrategyTest.php b/core/modules/big_pipe/tests/src/Unit/Render/Placeholder/BigPipeStrategyTest.php
index dd41f836a47c..cedb65d997d4 100644
--- a/core/modules/big_pipe/tests/src/Unit/Render/Placeholder/BigPipeStrategyTest.php
+++ b/core/modules/big_pipe/tests/src/Unit/Render/Placeholder/BigPipeStrategyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\big_pipe\Unit\Render\Placeholder;
use Drupal\big_pipe\Render\Placeholder\BigPipeStrategy;
diff --git a/core/modules/block/tests/src/Unit/BlockConfigEntityUnitTest.php b/core/modules/block/tests/src/Unit/BlockConfigEntityUnitTest.php
index 199aac1c7fb2..b12f180a703d 100644
--- a/core/modules/block/tests/src/Unit/BlockConfigEntityUnitTest.php
+++ b/core/modules/block/tests/src/Unit/BlockConfigEntityUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/block/tests/src/Unit/BlockFormTest.php b/core/modules/block/tests/src/Unit/BlockFormTest.php
index 9c0047155f89..73edd5b4cf2e 100644
--- a/core/modules/block/tests/src/Unit/BlockFormTest.php
+++ b/core/modules/block/tests/src/Unit/BlockFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit;
use Drupal\block\BlockForm;
diff --git a/core/modules/block/tests/src/Unit/BlockRepositoryTest.php b/core/modules/block/tests/src/Unit/BlockRepositoryTest.php
index 9a13978fe134..a5abcdf59624 100644
--- a/core/modules/block/tests/src/Unit/BlockRepositoryTest.php
+++ b/core/modules/block/tests/src/Unit/BlockRepositoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit;
use Drupal\block\BlockRepository;
diff --git a/core/modules/block/tests/src/Unit/CategoryAutocompleteTest.php b/core/modules/block/tests/src/Unit/CategoryAutocompleteTest.php
index c4d83aaba9a4..589d1c3f4b21 100644
--- a/core/modules/block/tests/src/Unit/CategoryAutocompleteTest.php
+++ b/core/modules/block/tests/src/Unit/CategoryAutocompleteTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit;
use Drupal\Component\Utility\Html;
diff --git a/core/modules/block/tests/src/Unit/Menu/BlockLocalTasksTest.php b/core/modules/block/tests/src/Unit/Menu/BlockLocalTasksTest.php
index 0141e107e81c..06093da237d0 100644
--- a/core/modules/block/tests/src/Unit/Menu/BlockLocalTasksTest.php
+++ b/core/modules/block/tests/src/Unit/Menu/BlockLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/block/tests/src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php b/core/modules/block/tests/src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php
index 946387c7c291..5842e957d6d2 100644
--- a/core/modules/block/tests/src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php
+++ b/core/modules/block/tests/src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit\Plugin\DisplayVariant;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockRegionTest.php b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockRegionTest.php
index c72fed64a294..ccd22a0c3529 100644
--- a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockRegionTest.php
+++ b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockRegionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit\Plugin\migrate\process;
use Drupal\block\Plugin\migrate\process\BlockRegion;
diff --git a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockSettingsTest.php b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockSettingsTest.php
index d73489337f3b..1aaaf0c451b0 100644
--- a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockSettingsTest.php
+++ b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockSettingsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit\Plugin\migrate\process;
use Drupal\block\Plugin\migrate\process\BlockSettings;
diff --git a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockThemeDeprecationTest.php b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockThemeDeprecationTest.php
index 746f3deedfcf..ed5e8b81b837 100644
--- a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockThemeDeprecationTest.php
+++ b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockThemeDeprecationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit\Plugin\migrate\process;
use Drupal\block\Plugin\migrate\process\BlockTheme;
diff --git a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockVisibilityTest.php b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockVisibilityTest.php
index c6551da82e15..f8f939aeae04 100644
--- a/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockVisibilityTest.php
+++ b/core/modules/block/tests/src/Unit/Plugin/migrate/process/BlockVisibilityTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block\Unit\Plugin\migrate\process;
use Drupal\block\Plugin\migrate\process\BlockVisibility;
diff --git a/core/modules/block_content/tests/src/Unit/Access/AccessGroupAndTest.php b/core/modules/block_content/tests/src/Unit/Access/AccessGroupAndTest.php
index d1d38b89d2da..080ba55c245d 100644
--- a/core/modules/block_content/tests/src/Unit/Access/AccessGroupAndTest.php
+++ b/core/modules/block_content/tests/src/Unit/Access/AccessGroupAndTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block_content\Unit\Access;
use Drupal\block_content\Access\AccessGroupAnd;
diff --git a/core/modules/block_content/tests/src/Unit/Access/AccessibleTestingTrait.php b/core/modules/block_content/tests/src/Unit/Access/AccessibleTestingTrait.php
index 8aab22782b05..a407e2388754 100644
--- a/core/modules/block_content/tests/src/Unit/Access/AccessibleTestingTrait.php
+++ b/core/modules/block_content/tests/src/Unit/Access/AccessibleTestingTrait.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block_content\Unit\Access;
use Drupal\Core\Access\AccessibleInterface;
diff --git a/core/modules/block_content/tests/src/Unit/Access/DependentAccessTest.php b/core/modules/block_content/tests/src/Unit/Access/DependentAccessTest.php
index d5d773d36a40..338240e751c5 100644
--- a/core/modules/block_content/tests/src/Unit/Access/DependentAccessTest.php
+++ b/core/modules/block_content/tests/src/Unit/Access/DependentAccessTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block_content\Unit\Access;
use Drupal\block_content\Access\AccessGroupAnd;
diff --git a/core/modules/block_content/tests/src/Unit/Menu/BlockContentLocalTasksTest.php b/core/modules/block_content/tests/src/Unit/Menu/BlockContentLocalTasksTest.php
index f1b0c6c97833..1da30a5e54d8 100644
--- a/core/modules/block_content/tests/src/Unit/Menu/BlockContentLocalTasksTest.php
+++ b/core/modules/block_content/tests/src/Unit/Menu/BlockContentLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\block_content\Unit\Menu;
use Drupal\Core\Entity\EntityTypeManagerInterface;
diff --git a/core/modules/book/tests/src/Unit/BookManagerTest.php b/core/modules/book/tests/src/Unit/BookManagerTest.php
index ebb8ec976380..945b21f788f8 100644
--- a/core/modules/book/tests/src/Unit/BookManagerTest.php
+++ b/core/modules/book/tests/src/Unit/BookManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\book\Unit;
use Drupal\book\BookManager;
diff --git a/core/modules/book/tests/src/Unit/BookUninstallValidatorTest.php b/core/modules/book/tests/src/Unit/BookUninstallValidatorTest.php
index 382e778dffc5..8d2eddc952bf 100644
--- a/core/modules/book/tests/src/Unit/BookUninstallValidatorTest.php
+++ b/core/modules/book/tests/src/Unit/BookUninstallValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\book\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/book/tests/src/Unit/Menu/BookLocalTasksTest.php b/core/modules/book/tests/src/Unit/Menu/BookLocalTasksTest.php
index 82aa9fb93727..db1732cb7f43 100644
--- a/core/modules/book/tests/src/Unit/Menu/BookLocalTasksTest.php
+++ b/core/modules/book/tests/src/Unit/Menu/BookLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\book\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/breakpoint/tests/src/Unit/BreakpointTest.php b/core/modules/breakpoint/tests/src/Unit/BreakpointTest.php
index dbd9de9b1384..20a45dceb0ea 100644
--- a/core/modules/breakpoint/tests/src/Unit/BreakpointTest.php
+++ b/core/modules/breakpoint/tests/src/Unit/BreakpointTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\breakpoint\Unit;
use Drupal\breakpoint\Breakpoint;
diff --git a/core/modules/ckeditor5/tests/src/Unit/CKEditor5Test.php b/core/modules/ckeditor5/tests/src/Unit/CKEditor5Test.php
index b4dd7db1bdc6..7b85d9becf1f 100644
--- a/core/modules/ckeditor5/tests/src/Unit/CKEditor5Test.php
+++ b/core/modules/ckeditor5/tests/src/Unit/CKEditor5Test.php
@@ -1,6 +1,6 @@
<?php
-declare(strict_types = 1);
+declare(strict_types=1);
namespace Drupal\Tests\ckeditor5\Unit;
diff --git a/core/modules/ckeditor5/tests/src/Unit/HTMLRestrictionsTest.php b/core/modules/ckeditor5/tests/src/Unit/HTMLRestrictionsTest.php
index cdad42b7a22c..a923d34f8905 100644
--- a/core/modules/ckeditor5/tests/src/Unit/HTMLRestrictionsTest.php
+++ b/core/modules/ckeditor5/tests/src/Unit/HTMLRestrictionsTest.php
@@ -1,6 +1,6 @@
<?php
-declare(strict_types = 1);
+declare(strict_types=1);
namespace Drupal\Tests\ckeditor5\Unit;
diff --git a/core/modules/ckeditor5/tests/src/Unit/SmartDefaultSettingsTest.php b/core/modules/ckeditor5/tests/src/Unit/SmartDefaultSettingsTest.php
index 0a10ef778ac7..f590ef6311a1 100644
--- a/core/modules/ckeditor5/tests/src/Unit/SmartDefaultSettingsTest.php
+++ b/core/modules/ckeditor5/tests/src/Unit/SmartDefaultSettingsTest.php
@@ -1,6 +1,6 @@
<?php
-declare(strict_types = 1);
+declare(strict_types=1);
namespace Drupal\Tests\ckeditor5\Unit;
diff --git a/core/modules/comment/tests/src/Unit/CommentLinkBuilderTest.php b/core/modules/comment/tests/src/Unit/CommentLinkBuilderTest.php
index 8bfe6f072a92..e3163c440bab 100644
--- a/core/modules/comment/tests/src/Unit/CommentLinkBuilderTest.php
+++ b/core/modules/comment/tests/src/Unit/CommentLinkBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit;
use Drupal\comment\CommentLinkBuilder;
diff --git a/core/modules/comment/tests/src/Unit/CommentManagerTest.php b/core/modules/comment/tests/src/Unit/CommentManagerTest.php
index e93f9c86d077..1409a886d4e3 100644
--- a/core/modules/comment/tests/src/Unit/CommentManagerTest.php
+++ b/core/modules/comment/tests/src/Unit/CommentManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit;
use Drupal\comment\CommentManager;
diff --git a/core/modules/comment/tests/src/Unit/CommentStatisticsUnitTest.php b/core/modules/comment/tests/src/Unit/CommentStatisticsUnitTest.php
index dc20d2336165..7658c7d8b091 100644
--- a/core/modules/comment/tests/src/Unit/CommentStatisticsUnitTest.php
+++ b/core/modules/comment/tests/src/Unit/CommentStatisticsUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit;
use Drupal\comment\CommentStatistics;
diff --git a/core/modules/comment/tests/src/Unit/Entity/CommentLockTest.php b/core/modules/comment/tests/src/Unit/Entity/CommentLockTest.php
index 3e70f0bb8a15..27441f6d4261 100644
--- a/core/modules/comment/tests/src/Unit/Entity/CommentLockTest.php
+++ b/core/modules/comment/tests/src/Unit/Entity/CommentLockTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit\Entity;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/comment/tests/src/Unit/Plugin/views/field/CommentBulkFormTest.php b/core/modules/comment/tests/src/Unit/Plugin/views/field/CommentBulkFormTest.php
index 4f769b938200..c25bb7489739 100644
--- a/core/modules/comment/tests/src/Unit/Plugin/views/field/CommentBulkFormTest.php
+++ b/core/modules/comment/tests/src/Unit/Plugin/views/field/CommentBulkFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit\Plugin\views\field;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/comment/tests/src/Unit/Plugin/views/field/EntityLinkTest.php b/core/modules/comment/tests/src/Unit/Plugin/views/field/EntityLinkTest.php
index 96d59bc77de0..779137cea013 100644
--- a/core/modules/comment/tests/src/Unit/Plugin/views/field/EntityLinkTest.php
+++ b/core/modules/comment/tests/src/Unit/Plugin/views/field/EntityLinkTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit\Plugin\views\field;
use Drupal\comment\Plugin\views\field\EntityLink;
diff --git a/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkApproveTest.php b/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkApproveTest.php
index b8e21dda9218..b66e6714701e 100644
--- a/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkApproveTest.php
+++ b/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkApproveTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit\Plugin\views\field;
use Drupal\comment\Plugin\views\field\LinkApprove;
diff --git a/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkReplyTest.php b/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkReplyTest.php
index ed48b8dabd40..a8fd169c6b0b 100644
--- a/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkReplyTest.php
+++ b/core/modules/comment/tests/src/Unit/Plugin/views/field/LinkReplyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\comment\Unit\Plugin\views\field;
use Drupal\comment\Plugin\views\field\LinkReply;
diff --git a/core/modules/config/tests/src/Unit/Menu/ConfigLocalTasksTest.php b/core/modules/config/tests/src/Unit/Menu/ConfigLocalTasksTest.php
index e6705d54037b..496b57fbfbc8 100644
--- a/core/modules/config/tests/src/Unit/Menu/ConfigLocalTasksTest.php
+++ b/core/modules/config/tests/src/Unit/Menu/ConfigLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\config\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php b/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php
index ad2aa8894511..39b4f2a90bed 100644
--- a/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php
+++ b/core/modules/config_translation/tests/src/Unit/ConfigEntityMapperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\config_translation\Unit;
use Drupal\config_translation\ConfigEntityMapper;
diff --git a/core/modules/config_translation/tests/src/Unit/ConfigFieldMapperTest.php b/core/modules/config_translation/tests/src/Unit/ConfigFieldMapperTest.php
index 5e436db32208..35fc7a10f201 100644
--- a/core/modules/config_translation/tests/src/Unit/ConfigFieldMapperTest.php
+++ b/core/modules/config_translation/tests/src/Unit/ConfigFieldMapperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\config_translation\Unit;
use Drupal\config_translation\ConfigFieldMapper;
diff --git a/core/modules/config_translation/tests/src/Unit/ConfigMapperManagerTest.php b/core/modules/config_translation/tests/src/Unit/ConfigMapperManagerTest.php
index 6aad4e192de5..81d55a2d5796 100644
--- a/core/modules/config_translation/tests/src/Unit/ConfigMapperManagerTest.php
+++ b/core/modules/config_translation/tests/src/Unit/ConfigMapperManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\config_translation\Unit;
use Drupal\config_translation\ConfigMapperManager;
diff --git a/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php b/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php
index fc2791fb1de1..23a13bed5f97 100644
--- a/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php
+++ b/core/modules/config_translation/tests/src/Unit/ConfigNamesMapperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\config_translation\Unit;
use Drupal\config_translation\ConfigNamesMapper;
diff --git a/core/modules/contact/tests/src/Unit/ContactLinkTest.php b/core/modules/contact/tests/src/Unit/ContactLinkTest.php
index 883044103267..78abf82e04b2 100644
--- a/core/modules/contact/tests/src/Unit/ContactLinkTest.php
+++ b/core/modules/contact/tests/src/Unit/ContactLinkTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\contact\Unit;
use Drupal\contact\Plugin\views\field\ContactLink;
diff --git a/core/modules/contact/tests/src/Unit/MailHandlerTest.php b/core/modules/contact/tests/src/Unit/MailHandlerTest.php
index 50b32628d8b2..173c9c775232 100644
--- a/core/modules/contact/tests/src/Unit/MailHandlerTest.php
+++ b/core/modules/contact/tests/src/Unit/MailHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\contact\Unit;
use Drupal\contact\MailHandler;
diff --git a/core/modules/content_moderation/tests/src/Unit/ContentModerationRouteSubscriberTest.php b/core/modules/content_moderation/tests/src/Unit/ContentModerationRouteSubscriberTest.php
index 01125ef76484..10970b448479 100644
--- a/core/modules/content_moderation/tests/src/Unit/ContentModerationRouteSubscriberTest.php
+++ b/core/modules/content_moderation/tests/src/Unit/ContentModerationRouteSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\content_moderation\Unit;
use Drupal\content_moderation\Routing\ContentModerationRouteSubscriber;
diff --git a/core/modules/content_moderation/tests/src/Unit/ContentPreprocessTest.php b/core/modules/content_moderation/tests/src/Unit/ContentPreprocessTest.php
index 8084716346fb..0a12971d0dfc 100644
--- a/core/modules/content_moderation/tests/src/Unit/ContentPreprocessTest.php
+++ b/core/modules/content_moderation/tests/src/Unit/ContentPreprocessTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\content_moderation\Unit;
use Drupal\content_moderation\ContentPreprocess;
diff --git a/core/modules/content_moderation/tests/src/Unit/LatestRevisionCheckTest.php b/core/modules/content_moderation/tests/src/Unit/LatestRevisionCheckTest.php
index 5b84b44fdead..c384425e3e5e 100644
--- a/core/modules/content_moderation/tests/src/Unit/LatestRevisionCheckTest.php
+++ b/core/modules/content_moderation/tests/src/Unit/LatestRevisionCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\content_moderation\Unit;
use Drupal\block_content\Entity\BlockContent;
diff --git a/core/modules/content_moderation/tests/src/Unit/ModerationInformationTest.php b/core/modules/content_moderation/tests/src/Unit/ModerationInformationTest.php
index eb88edd31a1d..0d92309af9ae 100644
--- a/core/modules/content_moderation/tests/src/Unit/ModerationInformationTest.php
+++ b/core/modules/content_moderation/tests/src/Unit/ModerationInformationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\content_moderation\Unit;
use Drupal\content_moderation\Entity\Handler\ModerationHandler;
diff --git a/core/modules/content_moderation/tests/src/Unit/StateTransitionValidationTest.php b/core/modules/content_moderation/tests/src/Unit/StateTransitionValidationTest.php
index 4aa71ece42f9..bb3141497593 100644
--- a/core/modules/content_moderation/tests/src/Unit/StateTransitionValidationTest.php
+++ b/core/modules/content_moderation/tests/src/Unit/StateTransitionValidationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\content_moderation\Unit;
use Drupal\content_moderation\ModerationInformationInterface;
diff --git a/core/modules/content_translation/tests/src/Unit/Access/ContentTranslationManageAccessCheckTest.php b/core/modules/content_translation/tests/src/Unit/Access/ContentTranslationManageAccessCheckTest.php
index 9c440fb0e02c..37151e77df2d 100644
--- a/core/modules/content_translation/tests/src/Unit/Access/ContentTranslationManageAccessCheckTest.php
+++ b/core/modules/content_translation/tests/src/Unit/Access/ContentTranslationManageAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\content_translation\Unit\Access;
use Drupal\content_translation\Access\ContentTranslationManageAccessCheck;
diff --git a/core/modules/content_translation/tests/src/Unit/Menu/ContentTranslationLocalTasksTest.php b/core/modules/content_translation/tests/src/Unit/Menu/ContentTranslationLocalTasksTest.php
index 00e300ba0696..a21d03fb5763 100644
--- a/core/modules/content_translation/tests/src/Unit/Menu/ContentTranslationLocalTasksTest.php
+++ b/core/modules/content_translation/tests/src/Unit/Menu/ContentTranslationLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\content_translation\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php b/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php
index e3a7b8ed35e9..b5dc4b4f42b7 100644
--- a/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php
+++ b/core/modules/datetime/tests/src/Unit/Plugin/migrate/field/DateFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\datetime\Unit\Plugin\migrate\field;
use Drupal\datetime\Plugin\migrate\field\DateField;
diff --git a/core/modules/editor/tests/src/Unit/EditorConfigEntityUnitTest.php b/core/modules/editor/tests/src/Unit/EditorConfigEntityUnitTest.php
index 13644b499c87..ac7af5b79d54 100644
--- a/core/modules/editor/tests/src/Unit/EditorConfigEntityUnitTest.php
+++ b/core/modules/editor/tests/src/Unit/EditorConfigEntityUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\editor\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/editor/tests/src/Unit/EditorXssFilter/StandardTest.php b/core/modules/editor/tests/src/Unit/EditorXssFilter/StandardTest.php
index af2990ffbdad..ec4c927676db 100644
--- a/core/modules/editor/tests/src/Unit/EditorXssFilter/StandardTest.php
+++ b/core/modules/editor/tests/src/Unit/EditorXssFilter/StandardTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\editor\Unit\EditorXssFilter;
use Drupal\editor\EditorXssFilter\Standard;
diff --git a/core/modules/field/tests/src/Unit/FieldConfigAccessControlHandlerTest.php b/core/modules/field/tests/src/Unit/FieldConfigAccessControlHandlerTest.php
index 986131d8a43a..67d900c626e0 100644
--- a/core/modules/field/tests/src/Unit/FieldConfigAccessControlHandlerTest.php
+++ b/core/modules/field/tests/src/Unit/FieldConfigAccessControlHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit;
use Drupal\field\Entity\FieldConfig;
diff --git a/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php b/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php
index 99c7b0c89b59..5797c8a35205 100644
--- a/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php
+++ b/core/modules/field/tests/src/Unit/FieldConfigEntityUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit;
use Drupal\Core\Entity\EntityType;
diff --git a/core/modules/field/tests/src/Unit/FieldStorageConfigAccessControlHandlerTest.php b/core/modules/field/tests/src/Unit/FieldStorageConfigAccessControlHandlerTest.php
index 7ce3c92c7f8b..ab0f9d2492e6 100644
--- a/core/modules/field/tests/src/Unit/FieldStorageConfigAccessControlHandlerTest.php
+++ b/core/modules/field/tests/src/Unit/FieldStorageConfigAccessControlHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit;
use Drupal\Component\Uuid\UuidInterface;
diff --git a/core/modules/field/tests/src/Unit/FieldStorageConfigEntityUnitTest.php b/core/modules/field/tests/src/Unit/FieldStorageConfigEntityUnitTest.php
index f510bf7b08f5..9cec8d16d89c 100644
--- a/core/modules/field/tests/src/Unit/FieldStorageConfigEntityUnitTest.php
+++ b/core/modules/field/tests/src/Unit/FieldStorageConfigEntityUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/field/tests/src/Unit/FieldUninstallValidatorTest.php b/core/modules/field/tests/src/Unit/FieldUninstallValidatorTest.php
index 6bb7575f5172..ebd28aaacf46 100644
--- a/core/modules/field/tests/src/Unit/FieldUninstallValidatorTest.php
+++ b/core/modules/field/tests/src/Unit/FieldUninstallValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/field/tests/src/Unit/Plugin/migrate/process/ProcessFieldTest.php b/core/modules/field/tests/src/Unit/Plugin/migrate/process/ProcessFieldTest.php
index 4b801b12ba42..4cf3a3fb4c73 100644
--- a/core/modules/field/tests/src/Unit/Plugin/migrate/process/ProcessFieldTest.php
+++ b/core/modules/field/tests/src/Unit/Plugin/migrate/process/ProcessFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit\Plugin\migrate\process;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldInstanceSettingsTest.php b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldInstanceSettingsTest.php
index 9d099b9a1192..e72ddecdbaea 100644
--- a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldInstanceSettingsTest.php
+++ b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldInstanceSettingsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit\Plugin\migrate\process\d6;
use Drupal\field\Plugin\migrate\process\d6\FieldInstanceSettings;
diff --git a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldSettingsTest.php b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldSettingsTest.php
index 1664d97aab1a..657cfb327303 100644
--- a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldSettingsTest.php
+++ b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldSettingsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit\Plugin\migrate\process\d6;
use Drupal\field\Plugin\migrate\process\d6\FieldSettings;
diff --git a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldTypeDefaultsTest.php b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldTypeDefaultsTest.php
index 5c4a66c54612..d3f3c3b7b1a9 100644
--- a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldTypeDefaultsTest.php
+++ b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d6/FieldTypeDefaultsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit\Plugin\migrate\process\d6;
use Drupal\field\Plugin\migrate\process\d6\FieldTypeDefaults;
diff --git a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldInstanceSettingsTest.php b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldInstanceSettingsTest.php
index d6860a78800e..c7c61905970b 100644
--- a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldInstanceSettingsTest.php
+++ b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldInstanceSettingsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit\Plugin\migrate\process\d7;
use Drupal\field\Plugin\migrate\process\d7\FieldInstanceSettings;
diff --git a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldSettingsTest.php b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldSettingsTest.php
index 5a55adec32a0..f7d53f61e09b 100644
--- a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldSettingsTest.php
+++ b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldSettingsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit\Plugin\migrate\process\d7;
use Drupal\field\Plugin\migrate\process\d7\FieldSettings;
diff --git a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldTypeDefaultsTest.php b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldTypeDefaultsTest.php
index 0a46b82dfa61..eef26b0c4e05 100644
--- a/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldTypeDefaultsTest.php
+++ b/core/modules/field/tests/src/Unit/Plugin/migrate/process/d7/FieldTypeDefaultsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field\Unit\Plugin\migrate\process\d7;
use Drupal\field\Plugin\migrate\process\d7\FieldTypeDefaults;
diff --git a/core/modules/field_layout/tests/src/Unit/FieldLayoutBuilderTest.php b/core/modules/field_layout/tests/src/Unit/FieldLayoutBuilderTest.php
index 431b8c1d35e8..8c1d21d20d09 100644
--- a/core/modules/field_layout/tests/src/Unit/FieldLayoutBuilderTest.php
+++ b/core/modules/field_layout/tests/src/Unit/FieldLayoutBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field_layout\Unit;
use Drupal\Core\Entity\EntityFieldManagerInterface;
diff --git a/core/modules/field_ui/tests/src/Unit/FieldConfigEditFormTest.php b/core/modules/field_ui/tests/src/Unit/FieldConfigEditFormTest.php
index d680842acc1d..e9c3a14a3169 100644
--- a/core/modules/field_ui/tests/src/Unit/FieldConfigEditFormTest.php
+++ b/core/modules/field_ui/tests/src/Unit/FieldConfigEditFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field_ui\Unit;
use Drupal\Core\Entity\EntityDisplayRepositoryInterface;
diff --git a/core/modules/field_ui/tests/src/Unit/FieldUiTableTest.php b/core/modules/field_ui/tests/src/Unit/FieldUiTableTest.php
index ae8d8bff5479..8ba2415b13e0 100644
--- a/core/modules/field_ui/tests/src/Unit/FieldUiTableTest.php
+++ b/core/modules/field_ui/tests/src/Unit/FieldUiTableTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field_ui\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/field_ui/tests/src/Unit/FieldUiTest.php b/core/modules/field_ui/tests/src/Unit/FieldUiTest.php
index 9582b70bde3d..1130714566ae 100644
--- a/core/modules/field_ui/tests/src/Unit/FieldUiTest.php
+++ b/core/modules/field_ui/tests/src/Unit/FieldUiTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\field_ui\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php
index 4f3a13f209bf..2e8e046dc558 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d6/FileFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\file\Unit\Plugin\migrate\field\d6;
use Drupal\migrate\Plugin\MigrationInterface;
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php
index 37e27a234072..10b3297c07c9 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/field/d7/FileFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\file\Unit\Plugin\migrate\field\d7;
use Drupal\migrate\Plugin\MigrationInterface;
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FieldFileTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FieldFileTest.php
index ef42c6a2d5ee..be96d280e92d 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FieldFileTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FieldFileTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\file\Unit\Plugin\migrate\process\d6;
use Drupal\file\Plugin\migrate\process\d6\FieldFile;
diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
index baf04dc41673..a984e42424c1 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\file\Unit\Plugin\migrate\process\d6;
use Drupal\file\Plugin\migrate\process\d6\FileUri;
diff --git a/core/modules/file/tests/src/Unit/SanitizeNameTest.php b/core/modules/file/tests/src/Unit/SanitizeNameTest.php
index dfe3b4675c21..33b544f7bba2 100644
--- a/core/modules/file/tests/src/Unit/SanitizeNameTest.php
+++ b/core/modules/file/tests/src/Unit/SanitizeNameTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\file\Unit;
use Drupal\Component\Transliteration\PhpTransliteration;
diff --git a/core/modules/file/tests/src/Unit/Upload/ContentDispositionFilenameParserTest.php b/core/modules/file/tests/src/Unit/Upload/ContentDispositionFilenameParserTest.php
index 04c6f9d1f614..2d3545306b8a 100644
--- a/core/modules/file/tests/src/Unit/Upload/ContentDispositionFilenameParserTest.php
+++ b/core/modules/file/tests/src/Unit/Upload/ContentDispositionFilenameParserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\file\Unit\Upload;
use Drupal\file\Upload\ContentDispositionFilenameParser;
diff --git a/core/modules/filter/tests/src/Unit/FilterHtmlTest.php b/core/modules/filter/tests/src/Unit/FilterHtmlTest.php
index 7ffb1691dd09..1c3e3f054d61 100644
--- a/core/modules/filter/tests/src/Unit/FilterHtmlTest.php
+++ b/core/modules/filter/tests/src/Unit/FilterHtmlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\filter\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/filter/tests/src/Unit/FilterImageLazyLoadTest.php b/core/modules/filter/tests/src/Unit/FilterImageLazyLoadTest.php
index 9686beb343a0..847b3dcc5ff0 100644
--- a/core/modules/filter/tests/src/Unit/FilterImageLazyLoadTest.php
+++ b/core/modules/filter/tests/src/Unit/FilterImageLazyLoadTest.php
@@ -1,6 +1,6 @@
<?php
-declare(strict_types = 1);
+declare(strict_types=1);
namespace Drupal\Tests\filter\Unit;
diff --git a/core/modules/filter/tests/src/Unit/FilterUninstallValidatorTest.php b/core/modules/filter/tests/src/Unit/FilterUninstallValidatorTest.php
index 2af37aa02013..b3319192cc60 100644
--- a/core/modules/filter/tests/src/Unit/FilterUninstallValidatorTest.php
+++ b/core/modules/filter/tests/src/Unit/FilterUninstallValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\filter\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/forum/tests/src/Unit/Breadcrumb/ForumBreadcrumbBuilderBaseTest.php b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumBreadcrumbBuilderBaseTest.php
index 9d4c3ff64d78..185455e9e030 100644
--- a/core/modules/forum/tests/src/Unit/Breadcrumb/ForumBreadcrumbBuilderBaseTest.php
+++ b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumBreadcrumbBuilderBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\forum\Unit\Breadcrumb;
use Drupal\Core\Cache\Cache;
diff --git a/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php
index 42d15d46b55a..269c13f44764 100644
--- a/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php
+++ b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumListingBreadcrumbBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\forum\Unit\Breadcrumb;
use Drupal\Core\Cache\Cache;
diff --git a/core/modules/forum/tests/src/Unit/Breadcrumb/ForumNodeBreadcrumbBuilderTest.php b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumNodeBreadcrumbBuilderTest.php
index 893b483050e0..de013135980d 100644
--- a/core/modules/forum/tests/src/Unit/Breadcrumb/ForumNodeBreadcrumbBuilderTest.php
+++ b/core/modules/forum/tests/src/Unit/Breadcrumb/ForumNodeBreadcrumbBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\forum\Unit\Breadcrumb;
use Drupal\Core\Cache\Cache;
diff --git a/core/modules/forum/tests/src/Unit/ForumManagerTest.php b/core/modules/forum/tests/src/Unit/ForumManagerTest.php
index e0c9055846b3..e61dcbf07f3b 100644
--- a/core/modules/forum/tests/src/Unit/ForumManagerTest.php
+++ b/core/modules/forum/tests/src/Unit/ForumManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\forum\Unit;
use Drupal\Core\Entity\EntityFieldManagerInterface;
diff --git a/core/modules/forum/tests/src/Unit/ForumUninstallValidatorTest.php b/core/modules/forum/tests/src/Unit/ForumUninstallValidatorTest.php
index c6c84c8fb847..d07bc5f9f969 100644
--- a/core/modules/forum/tests/src/Unit/ForumUninstallValidatorTest.php
+++ b/core/modules/forum/tests/src/Unit/ForumUninstallValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\forum\Unit;
use Drupal\Core\Url;
diff --git a/core/modules/help/tests/src/Unit/HelpTopicDiscoveryTest.php b/core/modules/help/tests/src/Unit/HelpTopicDiscoveryTest.php
index 7ad1c6f20e54..7ee16b4b40a8 100644
--- a/core/modules/help/tests/src/Unit/HelpTopicDiscoveryTest.php
+++ b/core/modules/help/tests/src/Unit/HelpTopicDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\help\Unit;
use Drupal\Component\Discovery\DiscoveryException;
diff --git a/core/modules/help/tests/src/Unit/HelpTopicTwigLoaderTest.php b/core/modules/help/tests/src/Unit/HelpTopicTwigLoaderTest.php
index c4cbfff7436c..df47e13b930a 100644
--- a/core/modules/help/tests/src/Unit/HelpTopicTwigLoaderTest.php
+++ b/core/modules/help/tests/src/Unit/HelpTopicTwigLoaderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\help\Unit;
use Drupal\Core\Extension\ModuleHandlerInterface;
diff --git a/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php b/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php
index acc48c144657..01fef4ec5b81 100644
--- a/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php
+++ b/core/modules/help/tests/src/Unit/HelpTopicTwigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\help\Unit;
use Drupal\Core\Cache\Cache;
diff --git a/core/modules/image/tests/src/Unit/ImageStyleTest.php b/core/modules/image/tests/src/Unit/ImageStyleTest.php
index 60fbbc76504a..5025e43911dc 100644
--- a/core/modules/image/tests/src/Unit/ImageStyleTest.php
+++ b/core/modules/image/tests/src/Unit/ImageStyleTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\image\Unit;
use Drupal\Component\Utility\Crypt;
diff --git a/core/modules/image/tests/src/Unit/PageCache/DenyPrivateImageStyleDownloadTest.php b/core/modules/image/tests/src/Unit/PageCache/DenyPrivateImageStyleDownloadTest.php
index 9e1fe476d99a..ecdff2372f8c 100644
--- a/core/modules/image/tests/src/Unit/PageCache/DenyPrivateImageStyleDownloadTest.php
+++ b/core/modules/image/tests/src/Unit/PageCache/DenyPrivateImageStyleDownloadTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\image\Unit\PageCache;
use Drupal\Core\PageCache\ResponsePolicyInterface;
diff --git a/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php b/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php
index 962f1079559e..ac80dbe713b2 100644
--- a/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php
+++ b/core/modules/inline_form_errors/tests/src/Unit/FormErrorHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\inline_form_errors\Unit;
use Drupal\Core\Form\FormState;
diff --git a/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php b/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php
index 90b5f5f8bbd4..5875ebc06c74 100644
--- a/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\EventSubscriber;
use Drupal\jsonapi\EventSubscriber\ResourceResponseValidator;
diff --git a/core/modules/jsonapi/tests/src/Unit/JsonApiResource/LinkTest.php b/core/modules/jsonapi/tests/src/Unit/JsonApiResource/LinkTest.php
index 5dbfe01ed418..fb5a075550bb 100644
--- a/core/modules/jsonapi/tests/src/Unit/JsonApiResource/LinkTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/JsonApiResource/LinkTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\JsonApiResource;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/modules/jsonapi/tests/src/Unit/JsonApiSpecTest.php b/core/modules/jsonapi/tests/src/Unit/JsonApiSpecTest.php
index ce7d02b77e29..7e347fdadcc6 100644
--- a/core/modules/jsonapi/tests/src/Unit/JsonApiSpecTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/JsonApiSpecTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit;
use Drupal\jsonapi\JsonApiSpec;
diff --git a/core/modules/jsonapi/tests/src/Unit/Normalizer/HttpExceptionNormalizerTest.php b/core/modules/jsonapi/tests/src/Unit/Normalizer/HttpExceptionNormalizerTest.php
index 5c061fe519f2..30eddf58a10f 100644
--- a/core/modules/jsonapi/tests/src/Unit/Normalizer/HttpExceptionNormalizerTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Normalizer/HttpExceptionNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Normalizer;
use Drupal\Core\Config\ConfigFactory;
diff --git a/core/modules/jsonapi/tests/src/Unit/Normalizer/JsonApiDocumentTopLevelNormalizerTest.php b/core/modules/jsonapi/tests/src/Unit/Normalizer/JsonApiDocumentTopLevelNormalizerTest.php
index ee83fd93e361..e88a8d29b62d 100644
--- a/core/modules/jsonapi/tests/src/Unit/Normalizer/JsonApiDocumentTopLevelNormalizerTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Normalizer/JsonApiDocumentTopLevelNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Normalizer;
use Drupal\Core\Entity\EntityInterface;
diff --git a/core/modules/jsonapi/tests/src/Unit/Normalizer/ResourceIdentifierNormalizerTest.php b/core/modules/jsonapi/tests/src/Unit/Normalizer/ResourceIdentifierNormalizerTest.php
index be3ad9317de8..4b15495a0975 100644
--- a/core/modules/jsonapi/tests/src/Unit/Normalizer/ResourceIdentifierNormalizerTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Normalizer/ResourceIdentifierNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Normalizer;
use Drupal\Core\Entity\EntityFieldManagerInterface;
diff --git a/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionGroupTest.php b/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionGroupTest.php
index cc0c416398fd..2cc50c559dc8 100644
--- a/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionGroupTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionGroupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Query;
use Drupal\jsonapi\Query\EntityConditionGroup;
diff --git a/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionTest.php b/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionTest.php
index 7f9b628174ea..9ea56e57056d 100644
--- a/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Query/EntityConditionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Query;
use Drupal\Core\Cache\Context\CacheContextsManager;
diff --git a/core/modules/jsonapi/tests/src/Unit/Query/OffsetPageTest.php b/core/modules/jsonapi/tests/src/Unit/Query/OffsetPageTest.php
index 3189b1d2e572..af1b3292bd96 100644
--- a/core/modules/jsonapi/tests/src/Unit/Query/OffsetPageTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Query/OffsetPageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Query;
use Drupal\Core\Cache\Context\CacheContextsManager;
diff --git a/core/modules/jsonapi/tests/src/Unit/Query/SortTest.php b/core/modules/jsonapi/tests/src/Unit/Query/SortTest.php
index f49b2f77122f..5aa88a11c71e 100644
--- a/core/modules/jsonapi/tests/src/Unit/Query/SortTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Query/SortTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Query;
use Drupal\Core\Cache\Context\CacheContextsManager;
diff --git a/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php b/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php
index e6c08a655955..5ea0022b5318 100644
--- a/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php
+++ b/core/modules/jsonapi/tests/src/Unit/Routing/RoutesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\jsonapi\Unit\Routing;
use Drupal\Core\Entity\EntityInterface;
diff --git a/core/modules/language/tests/src/Unit/Config/LanguageConfigOverrideTest.php b/core/modules/language/tests/src/Unit/Config/LanguageConfigOverrideTest.php
index 4dcbcde30135..8f8725b8d733 100644
--- a/core/modules/language/tests/src/Unit/Config/LanguageConfigOverrideTest.php
+++ b/core/modules/language/tests/src/Unit/Config/LanguageConfigOverrideTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit\Config;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php b/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php
index ef02b319d9f2..02c35d10bb76 100644
--- a/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php
+++ b/core/modules/language/tests/src/Unit/ConfigurableLanguageUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit;
use Drupal\language\Entity\ConfigurableLanguage;
diff --git a/core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php b/core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php
index eb442a12c2bc..960730908f18 100644
--- a/core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php
+++ b/core/modules/language/tests/src/Unit/ContentLanguageSettingsUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit;
use Drupal\Core\Language\LanguageInterface;
diff --git a/core/modules/language/tests/src/Unit/LanguageNegotiationUrlTest.php b/core/modules/language/tests/src/Unit/LanguageNegotiationUrlTest.php
index a74f22abdacf..a78b36aa0705 100644
--- a/core/modules/language/tests/src/Unit/LanguageNegotiationUrlTest.php
+++ b/core/modules/language/tests/src/Unit/LanguageNegotiationUrlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit;
use Drupal\Core\Cache\Cache;
diff --git a/core/modules/language/tests/src/Unit/Menu/LanguageLocalTasksTest.php b/core/modules/language/tests/src/Unit/Menu/LanguageLocalTasksTest.php
index 7d49f1faec33..c246618cfb13 100644
--- a/core/modules/language/tests/src/Unit/Menu/LanguageLocalTasksTest.php
+++ b/core/modules/language/tests/src/Unit/Menu/LanguageLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationContentEntityTest.php b/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationContentEntityTest.php
index 0f26e1da12af..324d748828a6 100644
--- a/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationContentEntityTest.php
+++ b/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationContentEntityTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit\Plugin\LanguageNegotiation;
use Drupal\Core\Cache\Context\CacheContextsManager;
diff --git a/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationTestBase.php b/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationTestBase.php
index ce2ab9b09a0b..e35731c47b9f 100644
--- a/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationTestBase.php
+++ b/core/modules/language/tests/src/Unit/Plugin/LanguageNegotiation/LanguageNegotiationTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit\Plugin\LanguageNegotiation;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
diff --git a/core/modules/language/tests/src/Unit/process/LanguageDomainsTest.php b/core/modules/language/tests/src/Unit/process/LanguageDomainsTest.php
index 64e9b3b879fe..8f6c3105ec59 100644
--- a/core/modules/language/tests/src/Unit/process/LanguageDomainsTest.php
+++ b/core/modules/language/tests/src/Unit/process/LanguageDomainsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit\process;
use Drupal\language\Plugin\migrate\process\LanguageDomains;
diff --git a/core/modules/language/tests/src/Unit/process/LanguageNegotiationTest.php b/core/modules/language/tests/src/Unit/process/LanguageNegotiationTest.php
index 64eb1c304638..ef5d2921bea1 100644
--- a/core/modules/language/tests/src/Unit/process/LanguageNegotiationTest.php
+++ b/core/modules/language/tests/src/Unit/process/LanguageNegotiationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit\process;
use Drupal\language\Plugin\migrate\process\LanguageNegotiation;
diff --git a/core/modules/language/tests/src/Unit/process/LanguageTypesTest.php b/core/modules/language/tests/src/Unit/process/LanguageTypesTest.php
index 3b41a6682530..5be238b35295 100644
--- a/core/modules/language/tests/src/Unit/process/LanguageTypesTest.php
+++ b/core/modules/language/tests/src/Unit/process/LanguageTypesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\language\Unit\process;
use Drupal\language\Plugin\migrate\process\LanguageTypes;
diff --git a/core/modules/layout_builder/tests/src/Unit/BlockComponentRenderArrayTest.php b/core/modules/layout_builder/tests/src/Unit/BlockComponentRenderArrayTest.php
index a34c02b943fa..7ace912fc5b0 100644
--- a/core/modules/layout_builder/tests/src/Unit/BlockComponentRenderArrayTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/BlockComponentRenderArrayTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\block_content\Access\RefinableDependentAccessInterface;
diff --git a/core/modules/layout_builder/tests/src/Unit/DefaultsSectionStorageTest.php b/core/modules/layout_builder/tests/src/Unit/DefaultsSectionStorageTest.php
index 302658068a39..a0abb96c7b58 100644
--- a/core/modules/layout_builder/tests/src/Unit/DefaultsSectionStorageTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/DefaultsSectionStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/layout_builder/tests/src/Unit/InlineBlockUsageTest.php b/core/modules/layout_builder/tests/src/Unit/InlineBlockUsageTest.php
index 49cba472ccaf..1806219066bb 100644
--- a/core/modules/layout_builder/tests/src/Unit/InlineBlockUsageTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/InlineBlockUsageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\Database\Connection;
diff --git a/core/modules/layout_builder/tests/src/Unit/LayoutBuilderIsActiveCacheContextTest.php b/core/modules/layout_builder/tests/src/Unit/LayoutBuilderIsActiveCacheContextTest.php
index f62e0428950b..2b8cbd00f8b5 100644
--- a/core/modules/layout_builder/tests/src/Unit/LayoutBuilderIsActiveCacheContextTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/LayoutBuilderIsActiveCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/layout_builder/tests/src/Unit/LayoutBuilderRoutesTest.php b/core/modules/layout_builder/tests/src/Unit/LayoutBuilderRoutesTest.php
index b8169951d39f..8bb67e92aa96 100644
--- a/core/modules/layout_builder/tests/src/Unit/LayoutBuilderRoutesTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/LayoutBuilderRoutesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\Routing\RouteBuildEvent;
diff --git a/core/modules/layout_builder/tests/src/Unit/LayoutEntityHelperTraitTest.php b/core/modules/layout_builder/tests/src/Unit/LayoutEntityHelperTraitTest.php
index 15cbb2dd1446..d1c9978f2d32 100644
--- a/core/modules/layout_builder/tests/src/Unit/LayoutEntityHelperTraitTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/LayoutEntityHelperTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Component\Plugin\ConfigurableInterface;
diff --git a/core/modules/layout_builder/tests/src/Unit/LayoutSectionStorageParamConverterTest.php b/core/modules/layout_builder/tests/src/Unit/LayoutSectionStorageParamConverterTest.php
index e89c36689174..e4bf73efbf1a 100644
--- a/core/modules/layout_builder/tests/src/Unit/LayoutSectionStorageParamConverterTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/LayoutSectionStorageParamConverterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\layout_builder\Routing\LayoutSectionStorageParamConverter;
diff --git a/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRepositoryTest.php b/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRepositoryTest.php
index 6269c7afa4a0..694e2db22659 100644
--- a/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRepositoryTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRepositoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\TempStore\SharedTempStore;
diff --git a/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRouteEnhancerTest.php b/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRouteEnhancerTest.php
index 2575e5c5945d..98e8d3eef6b1 100644
--- a/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRouteEnhancerTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/LayoutTempstoreRouteEnhancerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\Routing\RouteObjectInterface;
diff --git a/core/modules/layout_builder/tests/src/Unit/OverridesSectionStorageTest.php b/core/modules/layout_builder/tests/src/Unit/OverridesSectionStorageTest.php
index 4e7fd27d4180..fbab039a0c9c 100644
--- a/core/modules/layout_builder/tests/src/Unit/OverridesSectionStorageTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/OverridesSectionStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\Entity\EntityFieldManagerInterface;
diff --git a/core/modules/layout_builder/tests/src/Unit/SectionComponentTest.php b/core/modules/layout_builder/tests/src/Unit/SectionComponentTest.php
index e50fe65e3586..c3dc9732430c 100644
--- a/core/modules/layout_builder/tests/src/Unit/SectionComponentTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/SectionComponentTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\Block\BlockManagerInterface;
diff --git a/core/modules/layout_builder/tests/src/Unit/SectionRenderTest.php b/core/modules/layout_builder/tests/src/Unit/SectionRenderTest.php
index a149ff846753..de8ecb220f27 100644
--- a/core/modules/layout_builder/tests/src/Unit/SectionRenderTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/SectionRenderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher;
diff --git a/core/modules/layout_builder/tests/src/Unit/SectionStorageManagerTest.php b/core/modules/layout_builder/tests/src/Unit/SectionStorageManagerTest.php
index 50d11c371a12..64ffbf5abd38 100644
--- a/core/modules/layout_builder/tests/src/Unit/SectionStorageManagerTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/SectionStorageManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Component\Plugin\Context\ContextInterface;
diff --git a/core/modules/layout_builder/tests/src/Unit/SectionTest.php b/core/modules/layout_builder/tests/src/Unit/SectionTest.php
index 65f65d6a6a9f..f911459daff0 100644
--- a/core/modules/layout_builder/tests/src/Unit/SectionTest.php
+++ b/core/modules/layout_builder/tests/src/Unit/SectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\layout_builder\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/link/tests/src/Unit/LinkFormatterTest.php b/core/modules/link/tests/src/Unit/LinkFormatterTest.php
index 3670652847a7..600a1aa603ee 100644
--- a/core/modules/link/tests/src/Unit/LinkFormatterTest.php
+++ b/core/modules/link/tests/src/Unit/LinkFormatterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\link\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkAccessConstraintValidatorTest.php b/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkAccessConstraintValidatorTest.php
index 5e2d911d2410..b4639f2aadd5 100644
--- a/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkAccessConstraintValidatorTest.php
+++ b/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkAccessConstraintValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\link\Unit\Plugin\Validation\Constraint;
use Drupal\link\Plugin\Validation\Constraint\LinkAccessConstraint;
diff --git a/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php b/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php
index cc975309b4d1..1ed27c509762 100644
--- a/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php
+++ b/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\link\Unit\Plugin\Validation\Constraint;
use Drupal\Component\Utility\UrlHelper;
diff --git a/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php b/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php
index ac0a3e151715..9c519b1c3cc5 100644
--- a/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php
+++ b/core/modules/link/tests/src/Unit/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\link\Unit\Plugin\Validation\Constraint;
use Drupal\Core\Url;
diff --git a/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php b/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php
index 1c1d88f20769..b3996a7330b8 100644
--- a/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php
+++ b/core/modules/link/tests/src/Unit/Plugin/migrate/field/d6/LinkFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\link\Unit\Plugin\migrate\field\d6;
use Drupal\migrate\Plugin\MigrationInterface;
diff --git a/core/modules/link/tests/src/Unit/Plugin/migrate/process/FieldLinkTest.php b/core/modules/link/tests/src/Unit/Plugin/migrate/process/FieldLinkTest.php
index bcbda9e238f4..87c399172e9b 100644
--- a/core/modules/link/tests/src/Unit/Plugin/migrate/process/FieldLinkTest.php
+++ b/core/modules/link/tests/src/Unit/Plugin/migrate/process/FieldLinkTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\link\Unit\Plugin\migrate\process;
use Drupal\link\Plugin\migrate\process\FieldLink;
diff --git a/core/modules/locale/tests/src/Unit/LocaleLookupTest.php b/core/modules/locale/tests/src/Unit/LocaleLookupTest.php
index 59b439354a10..d4de8d8106eb 100644
--- a/core/modules/locale/tests/src/Unit/LocaleLookupTest.php
+++ b/core/modules/locale/tests/src/Unit/LocaleLookupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\locale\Unit;
use Drupal\Component\Gettext\PoItem;
diff --git a/core/modules/locale/tests/src/Unit/LocaleTranslationTest.php b/core/modules/locale/tests/src/Unit/LocaleTranslationTest.php
index a441b30fb704..d146fceb6384 100644
--- a/core/modules/locale/tests/src/Unit/LocaleTranslationTest.php
+++ b/core/modules/locale/tests/src/Unit/LocaleTranslationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\locale\Unit;
use Drupal\Core\Cache\CacheBackendInterface;
diff --git a/core/modules/locale/tests/src/Unit/Menu/LocaleLocalTasksTest.php b/core/modules/locale/tests/src/Unit/Menu/LocaleLocalTasksTest.php
index 5d2f9257e505..72ad654bad75 100644
--- a/core/modules/locale/tests/src/Unit/Menu/LocaleLocalTasksTest.php
+++ b/core/modules/locale/tests/src/Unit/Menu/LocaleLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\locale\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/locale/tests/src/Unit/StringBaseTest.php b/core/modules/locale/tests/src/Unit/StringBaseTest.php
index 99bb0377a4c0..e05a069a5b15 100644
--- a/core/modules/locale/tests/src/Unit/StringBaseTest.php
+++ b/core/modules/locale/tests/src/Unit/StringBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\locale\Unit;
use Drupal\locale\SourceString;
diff --git a/core/modules/media/tests/src/Unit/EndpointTest.php b/core/modules/media/tests/src/Unit/EndpointTest.php
index f925b09b7f7f..042beabe424e 100644
--- a/core/modules/media/tests/src/Unit/EndpointTest.php
+++ b/core/modules/media/tests/src/Unit/EndpointTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\media\Unit;
use Drupal\media\OEmbed\Endpoint;
diff --git a/core/modules/media/tests/src/Unit/IFrameUrlHelperTest.php b/core/modules/media/tests/src/Unit/IFrameUrlHelperTest.php
index 1d2837958397..8bcf151c7f8b 100644
--- a/core/modules/media/tests/src/Unit/IFrameUrlHelperTest.php
+++ b/core/modules/media/tests/src/Unit/IFrameUrlHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\media\Unit;
use Drupal\Core\PrivateKey;
diff --git a/core/modules/media/tests/src/Unit/ProviderRepositoryTest.php b/core/modules/media/tests/src/Unit/ProviderRepositoryTest.php
index 7bd6cfbd8c20..ec353f195435 100644
--- a/core/modules/media/tests/src/Unit/ProviderRepositoryTest.php
+++ b/core/modules/media/tests/src/Unit/ProviderRepositoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\media\Unit;
use Drupal\Core\KeyValueStore\KeyValueMemoryFactory;
diff --git a/core/modules/media/tests/src/Unit/ResourceFetcherTest.php b/core/modules/media/tests/src/Unit/ResourceFetcherTest.php
index 8cd96683c9fb..af8123ab3d10 100644
--- a/core/modules/media/tests/src/Unit/ResourceFetcherTest.php
+++ b/core/modules/media/tests/src/Unit/ResourceFetcherTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\media\Unit;
use Drupal\Component\Serialization\Json;
diff --git a/core/modules/media/tests/src/Unit/ResourceTest.php b/core/modules/media/tests/src/Unit/ResourceTest.php
index 5043565cd3e0..b47099e212f8 100644
--- a/core/modules/media/tests/src/Unit/ResourceTest.php
+++ b/core/modules/media/tests/src/Unit/ResourceTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\media\Unit;
use Drupal\media\OEmbed\Resource;
diff --git a/core/modules/media_library/tests/src/Unit/MediaLibrarySelectFormTest.php b/core/modules/media_library/tests/src/Unit/MediaLibrarySelectFormTest.php
index 5a4863b22f00..c188a57a400e 100644
--- a/core/modules/media_library/tests/src/Unit/MediaLibrarySelectFormTest.php
+++ b/core/modules/media_library/tests/src/Unit/MediaLibrarySelectFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\media_library\Unit;
use Drupal\Core\Form\FormStateInterface;
diff --git a/core/modules/menu_link_content/tests/src/Unit/MenuLinkContentEntityAccessTest.php b/core/modules/menu_link_content/tests/src/Unit/MenuLinkContentEntityAccessTest.php
index 6751fcf296ed..0c718a0ff048 100644
--- a/core/modules/menu_link_content/tests/src/Unit/MenuLinkContentEntityAccessTest.php
+++ b/core/modules/menu_link_content/tests/src/Unit/MenuLinkContentEntityAccessTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\menu_link_content\Unit;
use Drupal\Core\Access\AccessManagerInterface;
diff --git a/core/modules/menu_link_content/tests/src/Unit/MenuLinkPluginTest.php b/core/modules/menu_link_content/tests/src/Unit/MenuLinkPluginTest.php
index 1643a55ad9a1..871214664c1b 100644
--- a/core/modules/menu_link_content/tests/src/Unit/MenuLinkPluginTest.php
+++ b/core/modules/menu_link_content/tests/src/Unit/MenuLinkPluginTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\menu_link_content\Unit;
use Drupal\menu_link_content\Plugin\Menu\MenuLinkContent;
diff --git a/core/modules/migrate/tests/src/Unit/Event/EventBaseTest.php b/core/modules/migrate/tests/src/Unit/Event/EventBaseTest.php
index fee181f582b1..06632b51c55c 100644
--- a/core/modules/migrate/tests/src/Unit/Event/EventBaseTest.php
+++ b/core/modules/migrate/tests/src/Unit/Event/EventBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Event;
use Drupal\migrate\Event\EventBase;
diff --git a/core/modules/migrate/tests/src/Unit/Event/MigrateImportEventTest.php b/core/modules/migrate/tests/src/Unit/Event/MigrateImportEventTest.php
index 89638507ddef..7a900c883186 100644
--- a/core/modules/migrate/tests/src/Unit/Event/MigrateImportEventTest.php
+++ b/core/modules/migrate/tests/src/Unit/Event/MigrateImportEventTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Event;
use Drupal\migrate\Event\MigrateImportEvent;
diff --git a/core/modules/migrate/tests/src/Unit/Event/MigratePostRowSaveEventTest.php b/core/modules/migrate/tests/src/Unit/Event/MigratePostRowSaveEventTest.php
index ad381805b16d..5939bafe53aa 100644
--- a/core/modules/migrate/tests/src/Unit/Event/MigratePostRowSaveEventTest.php
+++ b/core/modules/migrate/tests/src/Unit/Event/MigratePostRowSaveEventTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Event;
use Drupal\migrate\Event\MigratePostRowSaveEvent;
diff --git a/core/modules/migrate/tests/src/Unit/Event/MigratePreRowSaveEventTest.php b/core/modules/migrate/tests/src/Unit/Event/MigratePreRowSaveEventTest.php
index aee14e5bbb74..b021cca20965 100644
--- a/core/modules/migrate/tests/src/Unit/Event/MigratePreRowSaveEventTest.php
+++ b/core/modules/migrate/tests/src/Unit/Event/MigratePreRowSaveEventTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Event;
use Drupal\migrate\Event\MigratePreRowSaveEvent;
diff --git a/core/modules/migrate/tests/src/Unit/Exception/RequirementsExceptionTest.php b/core/modules/migrate/tests/src/Unit/Exception/RequirementsExceptionTest.php
index 0a61d2821f37..c68752cfb0a6 100644
--- a/core/modules/migrate/tests/src/Unit/Exception/RequirementsExceptionTest.php
+++ b/core/modules/migrate/tests/src/Unit/Exception/RequirementsExceptionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Exception;
use Drupal\migrate\Exception\RequirementsException;
diff --git a/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php b/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php
index acf3e64c09e6..6d59a8987369 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateExecutableMemoryExceededTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
/**
diff --git a/core/modules/migrate/tests/src/Unit/MigrateExecutableTest.php b/core/modules/migrate/tests/src/Unit/MigrateExecutableTest.php
index 073a21a4a310..24a606390ad2 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateExecutableTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateExecutableTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Component\Utility\Html;
diff --git a/core/modules/migrate/tests/src/Unit/MigrateLookupTest.php b/core/modules/migrate/tests/src/Unit/MigrateLookupTest.php
index 744be766c22b..9805916fd54e 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateLookupTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateLookupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Component\Plugin\Exception\PluginException;
diff --git a/core/modules/migrate/tests/src/Unit/MigrateSourceTest.php b/core/modules/migrate/tests/src/Unit/MigrateSourceTest.php
index 833a6f7e9ed5..f8c42d46510d 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateSourceTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateSourceTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Core\Cache\CacheBackendInterface;
diff --git a/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapEnsureTablesTest.php b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapEnsureTablesTest.php
index f4a4dc25960f..33a0438f2f76 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapEnsureTablesTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapEnsureTablesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\migrate\Plugin\MigrateIdMapInterface;
diff --git a/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php
index 77fa22e563b0..0ba79e1aab5d 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/migrate/tests/src/Unit/MigrateStubTest.php b/core/modules/migrate/tests/src/Unit/MigrateStubTest.php
index a89ab3562861..0494f4c18ef2 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateStubTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateStubTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/modules/migrate/tests/src/Unit/MigrateTestCase.php b/core/modules/migrate/tests/src/Unit/MigrateTestCase.php
index 6021fab24097..e0f4e16ff443 100644
--- a/core/modules/migrate/tests/src/Unit/MigrateTestCase.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateTestCase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\sqlite\Driver\Database\sqlite\Connection;
diff --git a/core/modules/migrate/tests/src/Unit/MigrationPluginManagerTest.php b/core/modules/migrate/tests/src/Unit/MigrationPluginManagerTest.php
index 0982d783336f..223ade26c774 100644
--- a/core/modules/migrate/tests/src/Unit/MigrationPluginManagerTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrationPluginManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Core\Cache\CacheBackendInterface;
diff --git a/core/modules/migrate/tests/src/Unit/MigrationTest.php b/core/modules/migrate/tests/src/Unit/MigrationTest.php
index 5bf5d79e5aa3..adc40320100d 100644
--- a/core/modules/migrate/tests/src/Unit/MigrationTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException;
diff --git a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/CheckRequirementsTest.php b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/CheckRequirementsTest.php
index 23326ed3d1a5..b53f0004dfee 100644
--- a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/CheckRequirementsTest.php
+++ b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/CheckRequirementsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Plugin\migrate\destination;
use Drupal\Core\Config\ConfigFactoryInterface;
diff --git a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityContentBaseTest.php b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityContentBaseTest.php
index a7d7516f1fdc..17f4a2fae1a1 100644
--- a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityContentBaseTest.php
+++ b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityContentBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Plugin\migrate\destination;
use Drupal\Core\Entity\ContentEntityInterface;
diff --git a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityRevisionTest.php b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityRevisionTest.php
index 1ed293cfdb38..e2a223256ddd 100644
--- a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityRevisionTest.php
+++ b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityRevisionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Plugin\migrate\destination;
use Drupal\Core\Entity\EntityStorageInterface;
diff --git a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityTestBase.php b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityTestBase.php
index e88ac677fb32..4176c3935024 100644
--- a/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityTestBase.php
+++ b/core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\Plugin\migrate\destination;
use Drupal\Core\Entity\EntityFieldManagerInterface;
diff --git a/core/modules/migrate/tests/src/Unit/RowTest.php b/core/modules/migrate/tests/src/Unit/RowTest.php
index 81453d1ce1d1..fe89748acdb6 100644
--- a/core/modules/migrate/tests/src/Unit/RowTest.php
+++ b/core/modules/migrate/tests/src/Unit/RowTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\migrate\Plugin\MigrateIdMapInterface;
diff --git a/core/modules/migrate/tests/src/Unit/SqlBaseTest.php b/core/modules/migrate/tests/src/Unit/SqlBaseTest.php
index 3ad88c6296c4..0f62b7f34f7a 100644
--- a/core/modules/migrate/tests/src/Unit/SqlBaseTest.php
+++ b/core/modules/migrate/tests/src/Unit/SqlBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\migrate\Plugin\MigrationInterface;
diff --git a/core/modules/migrate/tests/src/Unit/TestMigrateExecutable.php b/core/modules/migrate/tests/src/Unit/TestMigrateExecutable.php
index 0fe7d79a6957..277a8929dd52 100644
--- a/core/modules/migrate/tests/src/Unit/TestMigrateExecutable.php
+++ b/core/modules/migrate/tests/src/Unit/TestMigrateExecutable.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Core\StringTranslation\TranslationInterface;
diff --git a/core/modules/migrate/tests/src/Unit/TestSqlIdMap.php b/core/modules/migrate/tests/src/Unit/TestSqlIdMap.php
index 433b3907ee14..06a87e4339fb 100644
--- a/core/modules/migrate/tests/src/Unit/TestSqlIdMap.php
+++ b/core/modules/migrate/tests/src/Unit/TestSqlIdMap.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit;
use Drupal\Core\Database\Connection;
diff --git a/core/modules/migrate/tests/src/Unit/destination/ConfigTest.php b/core/modules/migrate/tests/src/Unit/destination/ConfigTest.php
index cf3f77b5bfde..e99dafbcce42 100644
--- a/core/modules/migrate/tests/src/Unit/destination/ConfigTest.php
+++ b/core/modules/migrate/tests/src/Unit/destination/ConfigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\destination;
use Drupal\migrate\Plugin\MigrationInterface;
diff --git a/core/modules/migrate/tests/src/Unit/destination/EntityRevisionTest.php b/core/modules/migrate/tests/src/Unit/destination/EntityRevisionTest.php
index 5434404026b6..98647c5d594b 100644
--- a/core/modules/migrate/tests/src/Unit/destination/EntityRevisionTest.php
+++ b/core/modules/migrate/tests/src/Unit/destination/EntityRevisionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\destination;
use Drupal\Core\Entity\ContentEntityInterface;
diff --git a/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityDisplayTest.php b/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityDisplayTest.php
index 4a401bc3434f..60f0a7a3dd55 100644
--- a/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityDisplayTest.php
+++ b/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityDisplayTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\destination;
use Drupal\migrate\Plugin\migrate\destination\ComponentEntityDisplayBase;
diff --git a/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityFormDisplayTest.php b/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityFormDisplayTest.php
index ceea7010bac2..be6b38b07140 100644
--- a/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityFormDisplayTest.php
+++ b/core/modules/migrate/tests/src/Unit/destination/PerComponentEntityFormDisplayTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\destination;
use Drupal\migrate\Plugin\migrate\destination\PerComponentEntityFormDisplay;
diff --git a/core/modules/migrate/tests/src/Unit/process/ArrayBuildTest.php b/core/modules/migrate/tests/src/Unit/process/ArrayBuildTest.php
index 60812e2c64a4..0cf92f27eac3 100644
--- a/core/modules/migrate/tests/src/Unit/process/ArrayBuildTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/ArrayBuildTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/CallbackTest.php b/core/modules/migrate/tests/src/Unit/process/CallbackTest.php
index d7040b9f3ffa..5170c85959b2 100644
--- a/core/modules/migrate/tests/src/Unit/process/CallbackTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/CallbackTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/ConcatTest.php b/core/modules/migrate/tests/src/Unit/process/ConcatTest.php
index d45ff4bab9c4..049e1e21d313 100644
--- a/core/modules/migrate/tests/src/Unit/process/ConcatTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/ConcatTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/DefaultValueTest.php b/core/modules/migrate/tests/src/Unit/process/DefaultValueTest.php
index 82fb728c7a7a..3eed164eda74 100644
--- a/core/modules/migrate/tests/src/Unit/process/DefaultValueTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/DefaultValueTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\Plugin\migrate\process\DefaultValue;
diff --git a/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php b/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
index 426f45631a11..4eede4309f5d 100644
--- a/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/ExtractTest.php b/core/modules/migrate/tests/src/Unit/process/ExtractTest.php
index 9972ecf9f478..d83ed31866ab 100644
--- a/core/modules/migrate/tests/src/Unit/process/ExtractTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/ExtractTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/FileCopyTest.php b/core/modules/migrate/tests/src/Unit/process/FileCopyTest.php
index 72d55143b45d..62e3752247c3 100644
--- a/core/modules/migrate/tests/src/Unit/process/FileCopyTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/FileCopyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\Core\File\FileSystemInterface;
diff --git a/core/modules/migrate/tests/src/Unit/process/FlattenTest.php b/core/modules/migrate/tests/src/Unit/process/FlattenTest.php
index ff83ad9def69..ff7072682050 100644
--- a/core/modules/migrate/tests/src/Unit/process/FlattenTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/FlattenTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/FormatDateTest.php b/core/modules/migrate/tests/src/Unit/process/FormatDateTest.php
index 58d61538b641..7d2c1313ed80 100644
--- a/core/modules/migrate/tests/src/Unit/process/FormatDateTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/FormatDateTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/GetTest.php b/core/modules/migrate/tests/src/Unit/process/GetTest.php
index 0e6a0fa2d8f5..20e7d1e9752b 100644
--- a/core/modules/migrate/tests/src/Unit/process/GetTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/GetTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\Plugin\migrate\process\Get;
diff --git a/core/modules/migrate/tests/src/Unit/process/LogTest.php b/core/modules/migrate/tests/src/Unit/process/LogTest.php
index 6bb61d337e21..13244ad1d31a 100644
--- a/core/modules/migrate/tests/src/Unit/process/LogTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/LogTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\Plugin\migrate\process\Log;
diff --git a/core/modules/migrate/tests/src/Unit/process/MachineNameTest.php b/core/modules/migrate/tests/src/Unit/process/MachineNameTest.php
index fe082acbdbc9..eae1f1647ec5 100644
--- a/core/modules/migrate/tests/src/Unit/process/MachineNameTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/MachineNameTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\Plugin\migrate\process\MachineName;
diff --git a/core/modules/migrate/tests/src/Unit/process/MakeUniqueEntityFieldTest.php b/core/modules/migrate/tests/src/Unit/process/MakeUniqueEntityFieldTest.php
index 465de7e3dadb..175b9f3efa01 100644
--- a/core/modules/migrate/tests/src/Unit/process/MakeUniqueEntityFieldTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/MakeUniqueEntityFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\Core\Entity\EntityStorageInterface;
diff --git a/core/modules/migrate/tests/src/Unit/process/MenuLinkParentTest.php b/core/modules/migrate/tests/src/Unit/process/MenuLinkParentTest.php
index 08f9712d71e8..885aaba15bf4 100644
--- a/core/modules/migrate/tests/src/Unit/process/MenuLinkParentTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/MenuLinkParentTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/migrate/tests/src/Unit/process/MigrateProcessTestCase.php b/core/modules/migrate/tests/src/Unit/process/MigrateProcessTestCase.php
index 0f50059a3ff3..d625dfc66ee3 100644
--- a/core/modules/migrate/tests/src/Unit/process/MigrateProcessTestCase.php
+++ b/core/modules/migrate/tests/src/Unit/process/MigrateProcessTestCase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\Tests\migrate\Unit\MigrateTestCase;
diff --git a/core/modules/migrate/tests/src/Unit/process/MigrationLookupTest.php b/core/modules/migrate/tests/src/Unit/process/MigrationLookupTest.php
index c022175f5358..3d2558bd9165 100644
--- a/core/modules/migrate/tests/src/Unit/process/MigrationLookupTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/MigrationLookupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/MigrationLookupTestCase.php b/core/modules/migrate/tests/src/Unit/process/MigrationLookupTestCase.php
index f23883aa8cec..797ae3fb4168 100644
--- a/core/modules/migrate/tests/src/Unit/process/MigrationLookupTestCase.php
+++ b/core/modules/migrate/tests/src/Unit/process/MigrationLookupTestCase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/migrate/tests/src/Unit/process/NullCoalesceTest.php b/core/modules/migrate/tests/src/Unit/process/NullCoalesceTest.php
index b740e37a52f1..d822e142a1bb 100644
--- a/core/modules/migrate/tests/src/Unit/process/NullCoalesceTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/NullCoalesceTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/SkipOnEmptyTest.php b/core/modules/migrate/tests/src/Unit/process/SkipOnEmptyTest.php
index 0f2ddf8e00ec..751ebecc3a15 100644
--- a/core/modules/migrate/tests/src/Unit/process/SkipOnEmptyTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/SkipOnEmptyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateSkipProcessException;
diff --git a/core/modules/migrate/tests/src/Unit/process/SkipRowIfNotSetTest.php b/core/modules/migrate/tests/src/Unit/process/SkipRowIfNotSetTest.php
index acd33d3d778a..e299df149832 100644
--- a/core/modules/migrate/tests/src/Unit/process/SkipRowIfNotSetTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/SkipRowIfNotSetTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateSkipRowException;
diff --git a/core/modules/migrate/tests/src/Unit/process/StaticMapTest.php b/core/modules/migrate/tests/src/Unit/process/StaticMapTest.php
index 6cd043d5d441..ae46691d704b 100644
--- a/core/modules/migrate/tests/src/Unit/process/StaticMapTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/StaticMapTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\Component\Utility\Variable;
diff --git a/core/modules/migrate/tests/src/Unit/process/SubProcessTest.php b/core/modules/migrate/tests/src/Unit/process/SubProcessTest.php
index e398036dfaba..1adbeda5ca97 100644
--- a/core/modules/migrate/tests/src/Unit/process/SubProcessTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/SubProcessTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/SubstrTest.php b/core/modules/migrate/tests/src/Unit/process/SubstrTest.php
index af430d27a250..fa0db16e8a29 100644
--- a/core/modules/migrate/tests/src/Unit/process/SubstrTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/SubstrTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\MigrateException;
diff --git a/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php b/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
index 8df9dd36b659..7cb29c2863fa 100644
--- a/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate\Unit\process;
use Drupal\migrate\Plugin\migrate\process\UrlEncode;
diff --git a/core/modules/migrate_drupal/tests/src/Unit/FieldDiscoveryTest.php b/core/modules/migrate_drupal/tests/src/Unit/FieldDiscoveryTest.php
index d99b8cec8d06..1d32387523ee 100644
--- a/core/modules/migrate_drupal/tests/src/Unit/FieldDiscoveryTest.php
+++ b/core/modules/migrate_drupal/tests/src/Unit/FieldDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate_drupal\Unit;
use Drupal\Core\Logger\LoggerChannelInterface;
diff --git a/core/modules/migrate_drupal/tests/src/Unit/MigrateFieldPluginManagerTest.php b/core/modules/migrate_drupal/tests/src/Unit/MigrateFieldPluginManagerTest.php
index 340a28e15a85..75c4853e3546 100644
--- a/core/modules/migrate_drupal/tests/src/Unit/MigrateFieldPluginManagerTest.php
+++ b/core/modules/migrate_drupal/tests/src/Unit/MigrateFieldPluginManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate_drupal\Unit;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/modules/migrate_drupal/tests/src/Unit/MigrationConfigurationTraitTest.php b/core/modules/migrate_drupal/tests/src/Unit/MigrationConfigurationTraitTest.php
index 3e6e052147f1..042d9c85e53b 100644
--- a/core/modules/migrate_drupal/tests/src/Unit/MigrationConfigurationTraitTest.php
+++ b/core/modules/migrate_drupal/tests/src/Unit/MigrationConfigurationTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate_drupal\Unit;
use Drupal\Core\Database\DatabaseExceptionWrapper;
diff --git a/core/modules/migrate_drupal/tests/src/Unit/MigrationStateUnitTest.php b/core/modules/migrate_drupal/tests/src/Unit/MigrationStateUnitTest.php
index 1dd8f926960f..0b3808109b54 100644
--- a/core/modules/migrate_drupal/tests/src/Unit/MigrationStateUnitTest.php
+++ b/core/modules/migrate_drupal/tests/src/Unit/MigrationStateUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate_drupal\Unit;
use Drupal\Core\Extension\ModuleHandlerInterface;
diff --git a/core/modules/migrate_drupal/tests/src/Unit/source/DrupalSqlBaseTest.php b/core/modules/migrate_drupal/tests/src/Unit/source/DrupalSqlBaseTest.php
index d21e103e4dec..8ce8b03e2acc 100644
--- a/core/modules/migrate_drupal/tests/src/Unit/source/DrupalSqlBaseTest.php
+++ b/core/modules/migrate_drupal/tests/src/Unit/source/DrupalSqlBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate_drupal\Unit\source;
use Drupal\Core\Database\Connection;
diff --git a/core/modules/migrate_drupal/tests/src/Unit/source/d6/Drupal6SqlBaseTest.php b/core/modules/migrate_drupal/tests/src/Unit/source/d6/Drupal6SqlBaseTest.php
index 470af2de0680..f4dde78af2b7 100644
--- a/core/modules/migrate_drupal/tests/src/Unit/source/d6/Drupal6SqlBaseTest.php
+++ b/core/modules/migrate_drupal/tests/src/Unit/source/d6/Drupal6SqlBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\migrate_drupal\Unit\source\d6;
use Drupal\Tests\migrate\Unit\MigrateTestCase;
diff --git a/core/modules/mysql/tests/src/Unit/ConnectionTest.php b/core/modules/mysql/tests/src/Unit/ConnectionTest.php
index 84200f8aaa04..a3c0f50f064e 100644
--- a/core/modules/mysql/tests/src/Unit/ConnectionTest.php
+++ b/core/modules/mysql/tests/src/Unit/ConnectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\mysql\Unit;
use Drupal\mysql\Driver\Database\mysql\Connection;
diff --git a/core/modules/mysql/tests/src/Unit/InstallTasksTest.php b/core/modules/mysql/tests/src/Unit/InstallTasksTest.php
index b31bbf05f6fe..0abcef6e6b99 100644
--- a/core/modules/mysql/tests/src/Unit/InstallTasksTest.php
+++ b/core/modules/mysql/tests/src/Unit/InstallTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\mysql\Unit;
use Drupal\mysql\Driver\Database\mysql\Connection;
diff --git a/core/modules/node/tests/src/Unit/NodeOperationAccessTest.php b/core/modules/node/tests/src/Unit/NodeOperationAccessTest.php
index ee530d629ab5..d09572235f3f 100644
--- a/core/modules/node/tests/src/Unit/NodeOperationAccessTest.php
+++ b/core/modules/node/tests/src/Unit/NodeOperationAccessTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\node\Unit;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/node/tests/src/Unit/PageCache/DenyNodePreviewTest.php b/core/modules/node/tests/src/Unit/PageCache/DenyNodePreviewTest.php
index 7505dc3e1291..4e58aa7b59fe 100644
--- a/core/modules/node/tests/src/Unit/PageCache/DenyNodePreviewTest.php
+++ b/core/modules/node/tests/src/Unit/PageCache/DenyNodePreviewTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\node\Unit\PageCache;
use Drupal\Core\PageCache\ResponsePolicyInterface;
diff --git a/core/modules/node/tests/src/Unit/Plugin/views/field/NodeBulkFormTest.php b/core/modules/node/tests/src/Unit/Plugin/views/field/NodeBulkFormTest.php
index 67e1ad4e9129..517013ad8b5f 100644
--- a/core/modules/node/tests/src/Unit/Plugin/views/field/NodeBulkFormTest.php
+++ b/core/modules/node/tests/src/Unit/Plugin/views/field/NodeBulkFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\node\Unit\Plugin\views\field;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkDeleteTest.php b/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkDeleteTest.php
index d8b1b8183faf..bc6c19d959ac 100644
--- a/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkDeleteTest.php
+++ b/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkDeleteTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\node\Unit\Plugin\views\field;
use Drupal\Core\Access\AccessManagerInterface;
diff --git a/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkRevertTest.php b/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkRevertTest.php
index f6c189b1c2cc..aec2ed583180 100644
--- a/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkRevertTest.php
+++ b/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkRevertTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\node\Unit\Plugin\views\field;
use Drupal\Core\Access\AccessManagerInterface;
diff --git a/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkTest.php b/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkTest.php
index 46966dff6060..e3d766685743 100644
--- a/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkTest.php
+++ b/core/modules/node/tests/src/Unit/Plugin/views/field/RevisionLinkTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\node\Unit\Plugin\views\field;
use Drupal\Core\Access\AccessManagerInterface;
diff --git a/core/modules/path/tests/src/Unit/Field/PathFieldDefinitionTest.php b/core/modules/path/tests/src/Unit/Field/PathFieldDefinitionTest.php
index 21e0f4d3407a..6858ef56965e 100644
--- a/core/modules/path/tests/src/Unit/Field/PathFieldDefinitionTest.php
+++ b/core/modules/path/tests/src/Unit/Field/PathFieldDefinitionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\path\Unit\Field;
use Drupal\Tests\Core\Field\BaseFieldDefinitionTestBase;
diff --git a/core/modules/path/tests/src/Unit/migrate/process/PathSetTranslatedTest.php b/core/modules/path/tests/src/Unit/migrate/process/PathSetTranslatedTest.php
index 1af7e53e4c89..7f234ec6b3b7 100644
--- a/core/modules/path/tests/src/Unit/migrate/process/PathSetTranslatedTest.php
+++ b/core/modules/path/tests/src/Unit/migrate/process/PathSetTranslatedTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\path\Unit\migrate\process;
use Drupal\path\Plugin\migrate\process\PathSetTranslated;
diff --git a/core/modules/path_alias/tests/src/Unit/AliasManagerTest.php b/core/modules/path_alias/tests/src/Unit/AliasManagerTest.php
index a03417c3517c..2a52e3e719d4 100644
--- a/core/modules/path_alias/tests/src/Unit/AliasManagerTest.php
+++ b/core/modules/path_alias/tests/src/Unit/AliasManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\path_alias\Unit;
use Drupal\Core\Language\Language;
diff --git a/core/modules/path_alias/tests/src/Unit/PathProcessor/AliasPathProcessorTest.php b/core/modules/path_alias/tests/src/Unit/PathProcessor/AliasPathProcessorTest.php
index f82bd3ab8930..d0789615701f 100644
--- a/core/modules/path_alias/tests/src/Unit/PathProcessor/AliasPathProcessorTest.php
+++ b/core/modules/path_alias/tests/src/Unit/PathProcessor/AliasPathProcessorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\path_alias\Unit\PathProcessor;
use Drupal\Core\Cache\Cache;
diff --git a/core/modules/pgsql/tests/src/Unit/SchemaTest.php b/core/modules/pgsql/tests/src/Unit/SchemaTest.php
index 3b9192fdea4e..1dd286a2187c 100644
--- a/core/modules/pgsql/tests/src/Unit/SchemaTest.php
+++ b/core/modules/pgsql/tests/src/Unit/SchemaTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\pgsql\Unit;
use Drupal\pgsql\Driver\Database\pgsql\Schema;
diff --git a/core/modules/phpass/tests/src/Unit/LegacyPasswordHashingTest.php b/core/modules/phpass/tests/src/Unit/LegacyPasswordHashingTest.php
index 586d20818ce9..1386980498be 100644
--- a/core/modules/phpass/tests/src/Unit/LegacyPasswordHashingTest.php
+++ b/core/modules/phpass/tests/src/Unit/LegacyPasswordHashingTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\phpass\Unit;
use Drupal\phpass\Password\PhpassHashedPassword;
diff --git a/core/modules/phpass/tests/src/Unit/PasswordVerifyTest.php b/core/modules/phpass/tests/src/Unit/PasswordVerifyTest.php
index c130029ee185..92ff768a5ed8 100644
--- a/core/modules/phpass/tests/src/Unit/PasswordVerifyTest.php
+++ b/core/modules/phpass/tests/src/Unit/PasswordVerifyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\phpass\Unit;
use Drupal\phpass\Password\PhpassHashedPassword;
diff --git a/core/modules/responsive_image/tests/src/Unit/ResponsiveImageStyleConfigEntityUnitTest.php b/core/modules/responsive_image/tests/src/Unit/ResponsiveImageStyleConfigEntityUnitTest.php
index 685811cf20c3..cf2ff03c4aa4 100644
--- a/core/modules/responsive_image/tests/src/Unit/ResponsiveImageStyleConfigEntityUnitTest.php
+++ b/core/modules/responsive_image/tests/src/Unit/ResponsiveImageStyleConfigEntityUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\responsive_image\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/rest/tests/src/Unit/CollectRoutesTest.php b/core/modules/rest/tests/src/Unit/CollectRoutesTest.php
index 8e60baa9b779..b70073e23815 100644
--- a/core/modules/rest/tests/src/Unit/CollectRoutesTest.php
+++ b/core/modules/rest/tests/src/Unit/CollectRoutesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\rest\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/rest/tests/src/Unit/Entity/RestResourceConfigTest.php b/core/modules/rest/tests/src/Unit/Entity/RestResourceConfigTest.php
index bf9a989c5fbc..50ad05eb9c82 100644
--- a/core/modules/rest/tests/src/Unit/Entity/RestResourceConfigTest.php
+++ b/core/modules/rest/tests/src/Unit/Entity/RestResourceConfigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\rest\Unit\Entity;
use Drupal\rest\Entity\RestResourceConfig;
diff --git a/core/modules/rest/tests/src/Unit/EntityResourceValidationTraitTest.php b/core/modules/rest/tests/src/Unit/EntityResourceValidationTraitTest.php
index 83630dbeb84c..1814b113a2bd 100644
--- a/core/modules/rest/tests/src/Unit/EntityResourceValidationTraitTest.php
+++ b/core/modules/rest/tests/src/Unit/EntityResourceValidationTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\rest\Unit;
use Drupal\Core\Entity\EntityConstraintViolationList;
diff --git a/core/modules/rest/tests/src/Unit/EventSubscriber/ResourceResponseSubscriberTest.php b/core/modules/rest/tests/src/Unit/EventSubscriber/ResourceResponseSubscriberTest.php
index b0126a2f1f25..6234c72b7a5e 100644
--- a/core/modules/rest/tests/src/Unit/EventSubscriber/ResourceResponseSubscriberTest.php
+++ b/core/modules/rest/tests/src/Unit/EventSubscriber/ResourceResponseSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\rest\Unit\EventSubscriber;
use Drupal\Component\Serialization\Json;
diff --git a/core/modules/rest/tests/src/Unit/Plugin/views/style/SerializerTest.php b/core/modules/rest/tests/src/Unit/Plugin/views/style/SerializerTest.php
index b46b05d8ad5e..0f3eee1a3a7d 100644
--- a/core/modules/rest/tests/src/Unit/Plugin/views/style/SerializerTest.php
+++ b/core/modules/rest/tests/src/Unit/Plugin/views/style/SerializerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\rest\Unit\Plugin\views\style;
use Drupal\rest\Plugin\views\display\RestExport;
diff --git a/core/modules/sdc/tests/src/Unit/ComponentMetadataTest.php b/core/modules/sdc/tests/src/Unit/ComponentMetadataTest.php
index 86b248b1be7d..3b1f439a2fd9 100644
--- a/core/modules/sdc/tests/src/Unit/ComponentMetadataTest.php
+++ b/core/modules/sdc/tests/src/Unit/ComponentMetadataTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\sdc\Unit;
use Drupal\sdc\Component\ComponentMetadata;
diff --git a/core/modules/sdc/tests/src/Unit/ComponentValidatorTest.php b/core/modules/sdc/tests/src/Unit/ComponentValidatorTest.php
index 2490fd079c49..ddabdae49e56 100644
--- a/core/modules/sdc/tests/src/Unit/ComponentValidatorTest.php
+++ b/core/modules/sdc/tests/src/Unit/ComponentValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\sdc\Unit;
use Drupal\Core\Template\Attribute;
diff --git a/core/modules/sdc/tests/src/Unit/SchemaCompatibilityCheckerTest.php b/core/modules/sdc/tests/src/Unit/SchemaCompatibilityCheckerTest.php
index 927c11c1a487..142c7939c45d 100644
--- a/core/modules/sdc/tests/src/Unit/SchemaCompatibilityCheckerTest.php
+++ b/core/modules/sdc/tests/src/Unit/SchemaCompatibilityCheckerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\sdc\Unit;
use Drupal\sdc\Component\SchemaCompatibilityChecker;
diff --git a/core/modules/sdc/tests/src/Unit/UtilitiesTest.php b/core/modules/sdc/tests/src/Unit/UtilitiesTest.php
index baaba75c9d21..04cd8f7d2cc0 100644
--- a/core/modules/sdc/tests/src/Unit/UtilitiesTest.php
+++ b/core/modules/sdc/tests/src/Unit/UtilitiesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\sdc\Unit;
use Drupal\sdc\Utilities;
diff --git a/core/modules/search/tests/src/Unit/SearchPageRepositoryTest.php b/core/modules/search/tests/src/Unit/SearchPageRepositoryTest.php
index d551495120d5..4baecec35ccc 100644
--- a/core/modules/search/tests/src/Unit/SearchPageRepositoryTest.php
+++ b/core/modules/search/tests/src/Unit/SearchPageRepositoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\search\Unit;
use Drupal\Core\Entity\EntityTypeInterface;
diff --git a/core/modules/search/tests/src/Unit/SearchPluginCollectionTest.php b/core/modules/search/tests/src/Unit/SearchPluginCollectionTest.php
index aeddb24d5b52..df643317630f 100644
--- a/core/modules/search/tests/src/Unit/SearchPluginCollectionTest.php
+++ b/core/modules/search/tests/src/Unit/SearchPluginCollectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\search\Unit;
use Drupal\search\Plugin\SearchPluginCollection;
diff --git a/core/modules/serialization/tests/src/Unit/CompilerPass/RegisterSerializationClassesCompilerPassTest.php b/core/modules/serialization/tests/src/Unit/CompilerPass/RegisterSerializationClassesCompilerPassTest.php
index ab7185e80f5c..99bd8da87f00 100644
--- a/core/modules/serialization/tests/src/Unit/CompilerPass/RegisterSerializationClassesCompilerPassTest.php
+++ b/core/modules/serialization/tests/src/Unit/CompilerPass/RegisterSerializationClassesCompilerPassTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\CompilerPass;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/serialization/tests/src/Unit/Encoder/JsonEncoderTest.php b/core/modules/serialization/tests/src/Unit/Encoder/JsonEncoderTest.php
index 1a8a8c419820..82cb1768e9cd 100644
--- a/core/modules/serialization/tests/src/Unit/Encoder/JsonEncoderTest.php
+++ b/core/modules/serialization/tests/src/Unit/Encoder/JsonEncoderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Encoder;
use Drupal\serialization\Encoder\JsonEncoder;
diff --git a/core/modules/serialization/tests/src/Unit/Encoder/XmlEncoderTest.php b/core/modules/serialization/tests/src/Unit/Encoder/XmlEncoderTest.php
index e6f9f7df0501..151413de3e01 100644
--- a/core/modules/serialization/tests/src/Unit/Encoder/XmlEncoderTest.php
+++ b/core/modules/serialization/tests/src/Unit/Encoder/XmlEncoderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Encoder;
use Drupal\serialization\Encoder\XmlEncoder;
diff --git a/core/modules/serialization/tests/src/Unit/EntityResolver/ChainEntityResolverTest.php b/core/modules/serialization/tests/src/Unit/EntityResolver/ChainEntityResolverTest.php
index 81ea03be5cae..7e0c50c20f7f 100644
--- a/core/modules/serialization/tests/src/Unit/EntityResolver/ChainEntityResolverTest.php
+++ b/core/modules/serialization/tests/src/Unit/EntityResolver/ChainEntityResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\EntityResolver;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/serialization/tests/src/Unit/EntityResolver/UuidResolverTest.php b/core/modules/serialization/tests/src/Unit/EntityResolver/UuidResolverTest.php
index 73c890173668..545c41c47d47 100644
--- a/core/modules/serialization/tests/src/Unit/EntityResolver/UuidResolverTest.php
+++ b/core/modules/serialization/tests/src/Unit/EntityResolver/UuidResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\EntityResolver;
use Drupal\Core\Entity\EntityRepositoryInterface;
diff --git a/core/modules/serialization/tests/src/Unit/EventSubscriber/DefaultExceptionSubscriberTest.php b/core/modules/serialization/tests/src/Unit/EventSubscriber/DefaultExceptionSubscriberTest.php
index ed09e27fc1cb..59732c4b9b4f 100644
--- a/core/modules/serialization/tests/src/Unit/EventSubscriber/DefaultExceptionSubscriberTest.php
+++ b/core/modules/serialization/tests/src/Unit/EventSubscriber/DefaultExceptionSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\EventSubscriber;
use Drupal\serialization\Encoder\JsonEncoder;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/ComplexDataNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/ComplexDataNormalizerTest.php
index c106f1bdea6e..608fb3693551 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/ComplexDataNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/ComplexDataNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\TypedData\ComplexDataInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/ConfigEntityNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/ConfigEntityNormalizerTest.php
index 69d58a22a889..65fc0c35e610 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/ConfigEntityNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/ConfigEntityNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Config\Entity\ConfigEntityTypeInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/ContentEntityNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/ContentEntityNormalizerTest.php
index e048d3f1db42..2fbc10d3cbfe 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/ContentEntityNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/ContentEntityNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Entity\EntityFieldManagerInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php
index 98ca2ac7d0cd..4676ea218b09 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeIso8601NormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Config\ConfigFactoryInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeNormalizerTest.php
index 0d270d5e89f4..c229ee6f56b2 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/DateTimeNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Config\ConfigFactoryInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/EntityNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/EntityNormalizerTest.php
index 28403d6b0500..759f98c4f7e3 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/EntityNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/EntityNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Entity\ContentEntityBase;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php
index 95defa821cc9..f48fe477d8c0 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Entity\EntityInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/InternalTypedDataTestTrait.php b/core/modules/serialization/tests/src/Unit/Normalizer/InternalTypedDataTestTrait.php
index 3829934b508a..025ddb9c0397 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/InternalTypedDataTestTrait.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/InternalTypedDataTestTrait.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\TypedData\DataDefinitionInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/ListNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/ListNormalizerTest.php
index 7db6e7ce37e4..823f4166311f 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/ListNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/ListNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\TypedData\DataDefinition;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/NormalizerBaseTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/NormalizerBaseTest.php
index f8ec2abffaa8..c07224e4f1c5 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/NormalizerBaseTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/NormalizerBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/NullNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/NullNormalizerTest.php
index cc7402041cf6..c26417520e63 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/NullNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/NullNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\serialization\Normalizer\NullNormalizer;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/PrimitiveDataNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/PrimitiveDataNormalizerTest.php
index 3218b28674ce..c32bbf8adf04 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/PrimitiveDataNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/PrimitiveDataNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\TypedData\DataDefinition;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/TimestampItemNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/TimestampItemNormalizerTest.php
index 71d1c2c032df..0bc9e6b3de41 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/TimestampItemNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/TimestampItemNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Entity\EntityInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/TimestampNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/TimestampNormalizerTest.php
index 750d9d2997af..2023a4d8c704 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/TimestampNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/TimestampNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Core\Config\ConfigFactoryInterface;
diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/TypedDataNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/TypedDataNormalizerTest.php
index 92fbbb667a74..4bd2140ead63 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/TypedDataNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/TypedDataNormalizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\serialization\Unit\Normalizer;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/settings_tray/tests/src/Unit/Access/BlockPluginHasSettingsTrayFormAccessCheckTest.php b/core/modules/settings_tray/tests/src/Unit/Access/BlockPluginHasSettingsTrayFormAccessCheckTest.php
index 46f3984fc143..3c9e1903106c 100644
--- a/core/modules/settings_tray/tests/src/Unit/Access/BlockPluginHasSettingsTrayFormAccessCheckTest.php
+++ b/core/modules/settings_tray/tests/src/Unit/Access/BlockPluginHasSettingsTrayFormAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\settings_tray\Unit\Access;
use Drupal\block\BlockInterface;
diff --git a/core/modules/shortcut/tests/src/Unit/Menu/ShortcutLocalTasksTest.php b/core/modules/shortcut/tests/src/Unit/Menu/ShortcutLocalTasksTest.php
index 1bbe28f2d3f6..ea8e975c7a06 100644
--- a/core/modules/shortcut/tests/src/Unit/Menu/ShortcutLocalTasksTest.php
+++ b/core/modules/shortcut/tests/src/Unit/Menu/ShortcutLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\shortcut\Unit\Menu;
use Drupal\Core\Entity\EntityTypeManagerInterface;
diff --git a/core/modules/sqlite/tests/src/Unit/ConnectionTest.php b/core/modules/sqlite/tests/src/Unit/ConnectionTest.php
index 1555d83f112e..37e3062d5e24 100644
--- a/core/modules/sqlite/tests/src/Unit/ConnectionTest.php
+++ b/core/modules/sqlite/tests/src/Unit/ConnectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\sqlite\Unit;
use Drupal\sqlite\Driver\Database\sqlite\Connection;
diff --git a/core/modules/statistics/tests/src/Unit/StatisticsViewsResultTest.php b/core/modules/statistics/tests/src/Unit/StatisticsViewsResultTest.php
index ad69dac6c4f8..c811fcfd3d46 100644
--- a/core/modules/statistics/tests/src/Unit/StatisticsViewsResultTest.php
+++ b/core/modules/statistics/tests/src/Unit/StatisticsViewsResultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\statistics\Unit;
use Drupal\statistics\StatisticsViewsResult;
diff --git a/core/modules/system/tests/src/Unit/Batch/BatchControllerTest.php b/core/modules/system/tests/src/Unit/Batch/BatchControllerTest.php
index e68649fd37a6..ceae340f1af4 100644
--- a/core/modules/system/tests/src/Unit/Batch/BatchControllerTest.php
+++ b/core/modules/system/tests/src/Unit/Batch/BatchControllerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Batch;
use Drupal\Core\Batch\BatchStorageInterface;
diff --git a/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php b/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php
index 78dd3fdeb3e5..a27944c418ba 100644
--- a/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php
+++ b/core/modules/system/tests/src/Unit/Breadcrumbs/PathBasedBreadcrumbBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Breadcrumbs;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/system/tests/src/Unit/Event/SecurityFileUploadEventSubscriberTest.php b/core/modules/system/tests/src/Unit/Event/SecurityFileUploadEventSubscriberTest.php
index 9703ef1f754b..f2c8ba390968 100644
--- a/core/modules/system/tests/src/Unit/Event/SecurityFileUploadEventSubscriberTest.php
+++ b/core/modules/system/tests/src/Unit/Event/SecurityFileUploadEventSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Event;
use Drupal\Core\File\Event\FileUploadSanitizeNameEvent;
diff --git a/core/modules/system/tests/src/Unit/Menu/MenuLinkTreeTest.php b/core/modules/system/tests/src/Unit/Menu/MenuLinkTreeTest.php
index 6032ff399dc0..d736e39aa0b4 100644
--- a/core/modules/system/tests/src/Unit/Menu/MenuLinkTreeTest.php
+++ b/core/modules/system/tests/src/Unit/Menu/MenuLinkTreeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Menu;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/system/tests/src/Unit/Menu/SystemLocalTasksTest.php b/core/modules/system/tests/src/Unit/Menu/SystemLocalTasksTest.php
index ab0ff1186543..df7f74162d95 100644
--- a/core/modules/system/tests/src/Unit/Menu/SystemLocalTasksTest.php
+++ b/core/modules/system/tests/src/Unit/Menu/SystemLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Menu;
use Drupal\Core\Entity\EntityTypeInterface;
diff --git a/core/modules/system/tests/src/Unit/Pager/PreprocessPagerTest.php b/core/modules/system/tests/src/Unit/Pager/PreprocessPagerTest.php
index cf210b4ec8aa..7a529f254f1d 100644
--- a/core/modules/system/tests/src/Unit/Pager/PreprocessPagerTest.php
+++ b/core/modules/system/tests/src/Unit/Pager/PreprocessPagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Pager;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/system/tests/src/Unit/Routing/AdminRouteSubscriberTest.php b/core/modules/system/tests/src/Unit/Routing/AdminRouteSubscriberTest.php
index a02c7550d917..117346713824 100644
--- a/core/modules/system/tests/src/Unit/Routing/AdminRouteSubscriberTest.php
+++ b/core/modules/system/tests/src/Unit/Routing/AdminRouteSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Routing;
use Drupal\Core\Routing\RouteBuildEvent;
diff --git a/core/modules/system/tests/src/Unit/SecurityAdvisories/SecurityAdvisoryTest.php b/core/modules/system/tests/src/Unit/SecurityAdvisories/SecurityAdvisoryTest.php
index 8a499fbc62bd..13c63ded2096 100644
--- a/core/modules/system/tests/src/Unit/SecurityAdvisories/SecurityAdvisoryTest.php
+++ b/core/modules/system/tests/src/Unit/SecurityAdvisories/SecurityAdvisoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\SecurityAdvisories;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/system/tests/src/Unit/TraitAccessTest.php b/core/modules/system/tests/src/Unit/TraitAccessTest.php
index c9ac7ff668da..2abd92171b42 100644
--- a/core/modules/system/tests/src/Unit/TraitAccessTest.php
+++ b/core/modules/system/tests/src/Unit/TraitAccessTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/system/tests/src/Unit/Transliteration/MachineNameControllerTest.php b/core/modules/system/tests/src/Unit/Transliteration/MachineNameControllerTest.php
index 4b68b453cd4a..3fb6283db197 100644
--- a/core/modules/system/tests/src/Unit/Transliteration/MachineNameControllerTest.php
+++ b/core/modules/system/tests/src/Unit/Transliteration/MachineNameControllerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\system\Unit\Transliteration;
use Drupal\Core\Access\CsrfTokenGenerator;
diff --git a/core/modules/taxonomy/tests/src/Unit/Menu/TaxonomyLocalTasksTest.php b/core/modules/taxonomy/tests/src/Unit/Menu/TaxonomyLocalTasksTest.php
index c90533fbeee8..7635b266d78f 100644
--- a/core/modules/taxonomy/tests/src/Unit/Menu/TaxonomyLocalTasksTest.php
+++ b/core/modules/taxonomy/tests/src/Unit/Menu/TaxonomyLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\taxonomy\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php b/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php
index d31c9e61b096..687ca4557402 100644
--- a/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php
+++ b/core/modules/taxonomy/tests/src/Unit/Plugin/migrate/field/TaxonomyTermReferenceFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\taxonomy\Unit\Plugin\migrate\field;
use Drupal\migrate\Plugin\MigrationInterface;
diff --git a/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php b/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php
index 04e63780d5ad..2787a99d132e 100644
--- a/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php
+++ b/core/modules/text/tests/src/Unit/Plugin/migrate/field/d6/TextFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\text\Unit\Plugin\migrate\field\d6;
use Drupal\migrate\Plugin\MigrationInterface;
diff --git a/core/modules/text/tests/src/Unit/Plugin/migrate/field/d7/TextFieldTest.php b/core/modules/text/tests/src/Unit/Plugin/migrate/field/d7/TextFieldTest.php
index 64679992eec7..0bae0bec6445 100644
--- a/core/modules/text/tests/src/Unit/Plugin/migrate/field/d7/TextFieldTest.php
+++ b/core/modules/text/tests/src/Unit/Plugin/migrate/field/d7/TextFieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\text\Unit\Plugin\migrate\field\d7;
use Drupal\migrate\Row;
diff --git a/core/modules/toolbar/tests/src/Unit/PageCache/AllowToolbarPathTest.php b/core/modules/toolbar/tests/src/Unit/PageCache/AllowToolbarPathTest.php
index 027613c8758c..a11a1bd66ada 100644
--- a/core/modules/toolbar/tests/src/Unit/PageCache/AllowToolbarPathTest.php
+++ b/core/modules/toolbar/tests/src/Unit/PageCache/AllowToolbarPathTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\toolbar\Unit\PageCache;
use Drupal\toolbar\PageCache\AllowToolbarPath;
diff --git a/core/modules/tour/tests/src/Unit/Entity/TourTest.php b/core/modules/tour/tests/src/Unit/Entity/TourTest.php
index b1f3db0bbc2e..ff398e28670b 100644
--- a/core/modules/tour/tests/src/Unit/Entity/TourTest.php
+++ b/core/modules/tour/tests/src/Unit/Entity/TourTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\tour\Unit\Entity;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/tour/tests/src/Unit/TipPluginBaseTest.php b/core/modules/tour/tests/src/Unit/TipPluginBaseTest.php
index 5db0e3ab3289..aca693e563e9 100644
--- a/core/modules/tour/tests/src/Unit/TipPluginBaseTest.php
+++ b/core/modules/tour/tests/src/Unit/TipPluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\tour\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/update/tests/src/Unit/Menu/UpdateLocalTasksTest.php b/core/modules/update/tests/src/Unit/Menu/UpdateLocalTasksTest.php
index c345f3551ddc..a62714e70d03 100644
--- a/core/modules/update/tests/src/Unit/Menu/UpdateLocalTasksTest.php
+++ b/core/modules/update/tests/src/Unit/Menu/UpdateLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\update\Unit\Menu;
use Drupal\Tests\Core\Menu\LocalTaskIntegrationTestBase;
diff --git a/core/modules/update/tests/src/Unit/ProjectCoreCompatibilityTest.php b/core/modules/update/tests/src/Unit/ProjectCoreCompatibilityTest.php
index e29771154cd6..1b68ef27d41b 100644
--- a/core/modules/update/tests/src/Unit/ProjectCoreCompatibilityTest.php
+++ b/core/modules/update/tests/src/Unit/ProjectCoreCompatibilityTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\update\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/update/tests/src/Unit/ProjectReleaseTest.php b/core/modules/update/tests/src/Unit/ProjectReleaseTest.php
index 4e38599ca9cc..ebd538338b75 100644
--- a/core/modules/update/tests/src/Unit/ProjectReleaseTest.php
+++ b/core/modules/update/tests/src/Unit/ProjectReleaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\update\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/update/tests/src/Unit/UpdateFetcherTest.php b/core/modules/update/tests/src/Unit/UpdateFetcherTest.php
index 2c1256e9f94a..26544d929c73 100644
--- a/core/modules/update/tests/src/Unit/UpdateFetcherTest.php
+++ b/core/modules/update/tests/src/Unit/UpdateFetcherTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\update\Unit;
use ColinODell\PsrTestLogger\TestLogger;
diff --git a/core/modules/update/tests/src/Unit/UpdateMailTest.php b/core/modules/update/tests/src/Unit/UpdateMailTest.php
index 34f17d69c2e7..cba4fbb1ffaf 100644
--- a/core/modules/update/tests/src/Unit/UpdateMailTest.php
+++ b/core/modules/update/tests/src/Unit/UpdateMailTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\update\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/user/tests/src/Unit/Form/EntityPermissionsFormTest.php b/core/modules/user/tests/src/Unit/Form/EntityPermissionsFormTest.php
index cc994d858e2a..d0120508d901 100644
--- a/core/modules/user/tests/src/Unit/Form/EntityPermissionsFormTest.php
+++ b/core/modules/user/tests/src/Unit/Form/EntityPermissionsFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Form;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/user/tests/src/Unit/Menu/UserLocalTasksTest.php b/core/modules/user/tests/src/Unit/Menu/UserLocalTasksTest.php
index a6dc74eb8432..5a791d66cd58 100644
--- a/core/modules/user/tests/src/Unit/Menu/UserLocalTasksTest.php
+++ b/core/modules/user/tests/src/Unit/Menu/UserLocalTasksTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Menu;
use Drupal\Core\Entity\EntityTypeManagerInterface;
diff --git a/core/modules/user/tests/src/Unit/PermissionAccessCheckTest.php b/core/modules/user/tests/src/Unit/PermissionAccessCheckTest.php
index 8ffce00cdddb..4ed2bedac1ed 100644
--- a/core/modules/user/tests/src/Unit/PermissionAccessCheckTest.php
+++ b/core/modules/user/tests/src/Unit/PermissionAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/user/tests/src/Unit/PermissionHandlerTest.php b/core/modules/user/tests/src/Unit/PermissionHandlerTest.php
index 50eb4790c5e9..ccdc171c67d5 100644
--- a/core/modules/user/tests/src/Unit/PermissionHandlerTest.php
+++ b/core/modules/user/tests/src/Unit/PermissionHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit;
use Drupal\Core\Extension\Extension;
diff --git a/core/modules/user/tests/src/Unit/Plugin/Action/AddRoleUserTest.php b/core/modules/user/tests/src/Unit/Plugin/Action/AddRoleUserTest.php
index a2c91e3027d5..218587428e4f 100644
--- a/core/modules/user/tests/src/Unit/Plugin/Action/AddRoleUserTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/Action/AddRoleUserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\Action;
use Drupal\user\Plugin\Action\AddRoleUser;
diff --git a/core/modules/user/tests/src/Unit/Plugin/Action/RemoveRoleUserTest.php b/core/modules/user/tests/src/Unit/Plugin/Action/RemoveRoleUserTest.php
index 476afe94d3d8..e52542b15b1a 100644
--- a/core/modules/user/tests/src/Unit/Plugin/Action/RemoveRoleUserTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/Action/RemoveRoleUserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\Action;
use Drupal\user\Plugin\Action\RemoveRoleUser;
diff --git a/core/modules/user/tests/src/Unit/Plugin/Action/RoleUserTestBase.php b/core/modules/user/tests/src/Unit/Plugin/Action/RoleUserTestBase.php
index 118835f1cc0e..dd6244626a64 100644
--- a/core/modules/user/tests/src/Unit/Plugin/Action/RoleUserTestBase.php
+++ b/core/modules/user/tests/src/Unit/Plugin/Action/RoleUserTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\Action;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/user/tests/src/Unit/Plugin/Core/Entity/UserTest.php b/core/modules/user/tests/src/Unit/Plugin/Core/Entity/UserTest.php
index f96d126e6833..8851dae88c80 100644
--- a/core/modules/user/tests/src/Unit/Plugin/Core/Entity/UserTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/Core/Entity/UserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\Core\Entity;
use Drupal\Tests\Core\Session\UserSessionTest;
diff --git a/core/modules/user/tests/src/Unit/Plugin/Derivative/UserLocalTaskTest.php b/core/modules/user/tests/src/Unit/Plugin/Derivative/UserLocalTaskTest.php
index 9d2a0209914d..770b56107872 100644
--- a/core/modules/user/tests/src/Unit/Plugin/Derivative/UserLocalTaskTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/Derivative/UserLocalTaskTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\Derivative;
use Drupal\Core\Entity\EntityTypeInterface;
diff --git a/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/ProtectedUserFieldConstraintValidatorTest.php b/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/ProtectedUserFieldConstraintValidatorTest.php
index 6a6e9f0ec33e..6bfb796faee1 100644
--- a/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/ProtectedUserFieldConstraintValidatorTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/ProtectedUserFieldConstraintValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\Validation\Constraint;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/UserMailRequiredValidatorTest.php b/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/UserMailRequiredValidatorTest.php
index f1a316087491..02ac593f8cdd 100644
--- a/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/UserMailRequiredValidatorTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/Validation/Constraint/UserMailRequiredValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\Validation\Constraint;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/user/tests/src/Unit/Plugin/migrate/process/ConvertTokensTest.php b/core/modules/user/tests/src/Unit/Plugin/migrate/process/ConvertTokensTest.php
index 1cbc849a8107..f7e6dd297085 100644
--- a/core/modules/user/tests/src/Unit/Plugin/migrate/process/ConvertTokensTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/migrate/process/ConvertTokensTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\migrate\process;
use Drupal\user\Plugin\migrate\process\ConvertTokens;
diff --git a/core/modules/user/tests/src/Unit/Plugin/views/field/PermissionsTest.php b/core/modules/user/tests/src/Unit/Plugin/views/field/PermissionsTest.php
index 0beff242bee5..3625fe131ec7 100644
--- a/core/modules/user/tests/src/Unit/Plugin/views/field/PermissionsTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/views/field/PermissionsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\views\field;
use Drupal\Core\Entity\EntityTypeManagerInterface;
diff --git a/core/modules/user/tests/src/Unit/Plugin/views/field/UserBulkFormTest.php b/core/modules/user/tests/src/Unit/Plugin/views/field/UserBulkFormTest.php
index 9b007ff11f3b..95703a459204 100644
--- a/core/modules/user/tests/src/Unit/Plugin/views/field/UserBulkFormTest.php
+++ b/core/modules/user/tests/src/Unit/Plugin/views/field/UserBulkFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Plugin\views\field;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/user/tests/src/Unit/Theme/AdminNegotiatorTest.php b/core/modules/user/tests/src/Unit/Theme/AdminNegotiatorTest.php
index e4bcd038bbf7..0ad90dbc4a0e 100644
--- a/core/modules/user/tests/src/Unit/Theme/AdminNegotiatorTest.php
+++ b/core/modules/user/tests/src/Unit/Theme/AdminNegotiatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Theme;
use Drupal\Core\Entity\EntityTypeManagerInterface;
diff --git a/core/modules/user/tests/src/Unit/ToolbarLinkBuilderTest.php b/core/modules/user/tests/src/Unit/ToolbarLinkBuilderTest.php
index 40be72a66645..5c40206ee3ce 100644
--- a/core/modules/user/tests/src/Unit/ToolbarLinkBuilderTest.php
+++ b/core/modules/user/tests/src/Unit/ToolbarLinkBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit;
use Drupal\Core\Session\AccountProxyInterface;
diff --git a/core/modules/user/tests/src/Unit/UserAccessControlHandlerTest.php b/core/modules/user/tests/src/Unit/UserAccessControlHandlerTest.php
index de7482a3ba2e..8abe7759a116 100644
--- a/core/modules/user/tests/src/Unit/UserAccessControlHandlerTest.php
+++ b/core/modules/user/tests/src/Unit/UserAccessControlHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/user/tests/src/Unit/UserAuthTest.php b/core/modules/user/tests/src/Unit/UserAuthTest.php
index 1809d4985d0a..e14e40225a37 100644
--- a/core/modules/user/tests/src/Unit/UserAuthTest.php
+++ b/core/modules/user/tests/src/Unit/UserAuthTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit;
use Drupal\Core\Entity\EntityTypeManagerInterface;
diff --git a/core/modules/user/tests/src/Unit/UserNameItemTest.php b/core/modules/user/tests/src/Unit/UserNameItemTest.php
index 11ca5a87bdd4..0a0a3ce594b3 100644
--- a/core/modules/user/tests/src/Unit/UserNameItemTest.php
+++ b/core/modules/user/tests/src/Unit/UserNameItemTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit;
use Drupal\Core\Field\FieldDefinitionInterface;
diff --git a/core/modules/user/tests/src/Unit/UserRegistrationResourceTest.php b/core/modules/user/tests/src/Unit/UserRegistrationResourceTest.php
index a403f69f7733..5bb7511e973f 100644
--- a/core/modules/user/tests/src/Unit/UserRegistrationResourceTest.php
+++ b/core/modules/user/tests/src/Unit/UserRegistrationResourceTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit;
use Drupal\Core\Config\ImmutableConfig;
diff --git a/core/modules/user/tests/src/Unit/Views/Argument/RolesRidTest.php b/core/modules/user/tests/src/Unit/Views/Argument/RolesRidTest.php
index 8e18649ee70d..7e5bebfbf2e4 100644
--- a/core/modules/user/tests/src/Unit/Views/Argument/RolesRidTest.php
+++ b/core/modules/user/tests/src/Unit/Views/Argument/RolesRidTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\user\Unit\Views\Argument;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/views/tests/src/Unit/Controller/ViewAjaxControllerTest.php b/core/modules/views/tests/src/Unit/Controller/ViewAjaxControllerTest.php
index c342a48d93d1..6ef1a332fef5 100644
--- a/core/modules/views/tests/src/Unit/Controller/ViewAjaxControllerTest.php
+++ b/core/modules/views/tests/src/Unit/Controller/ViewAjaxControllerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Controller;
use Drupal\Core\Render\RenderContext;
diff --git a/core/modules/views/tests/src/Unit/EventSubscriber/RouteSubscriberTest.php b/core/modules/views/tests/src/Unit/EventSubscriber/RouteSubscriberTest.php
index a458bddafba7..377a0c227f82 100644
--- a/core/modules/views/tests/src/Unit/EventSubscriber/RouteSubscriberTest.php
+++ b/core/modules/views/tests/src/Unit/EventSubscriber/RouteSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\EventSubscriber;
use Drupal\Core\Entity\EntityTypeManagerInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/Block/ViewsBlockTest.php b/core/modules/views/tests/src/Unit/Plugin/Block/ViewsBlockTest.php
index ed0deb1868a1..a535e971eeef 100644
--- a/core/modules/views/tests/src/Unit/Plugin/Block/ViewsBlockTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/Block/ViewsBlockTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\Block;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/views/tests/src/Unit/Plugin/Derivative/ViewsLocalTaskTest.php b/core/modules/views/tests/src/Unit/Plugin/Derivative/ViewsLocalTaskTest.php
index be6c2851d63e..e09ac60407eb 100644
--- a/core/modules/views/tests/src/Unit/Plugin/Derivative/ViewsLocalTaskTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/Derivative/ViewsLocalTaskTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\Derivative;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/HandlerBaseTest.php b/core/modules/views/tests/src/Unit/Plugin/HandlerBaseTest.php
index 52cd88de7952..31f5c9399834 100644
--- a/core/modules/views/tests/src/Unit/Plugin/HandlerBaseTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/HandlerBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/HandlerTestTrait.php b/core/modules/views/tests/src/Unit/Plugin/HandlerTestTrait.php
index 1bde6f0381cc..3760d65d1146 100644
--- a/core/modules/views/tests/src/Unit/Plugin/HandlerTestTrait.php
+++ b/core/modules/views/tests/src/Unit/Plugin/HandlerTestTrait.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin;
/**
diff --git a/core/modules/views/tests/src/Unit/Plugin/area/EntityTest.php b/core/modules/views/tests/src/Unit/Plugin/area/EntityTest.php
index 1a759fd45ce5..2379c9567f6a 100644
--- a/core/modules/views/tests/src/Unit/Plugin/area/EntityTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/area/EntityTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\area;
use Drupal\Core\Entity\EntityDisplayRepositoryInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/area/MessagesTest.php b/core/modules/views/tests/src/Unit/Plugin/area/MessagesTest.php
index 70c30b96c36f..1c81c8200189 100644
--- a/core/modules/views/tests/src/Unit/Plugin/area/MessagesTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/area/MessagesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\area;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/area/ResultTest.php b/core/modules/views/tests/src/Unit/Plugin/area/ResultTest.php
index 5f85d89476d9..c8e65c97b1bb 100644
--- a/core/modules/views/tests/src/Unit/Plugin/area/ResultTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/area/ResultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\area;
use Drupal\Core\Routing\RouteProviderInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/area/ViewTest.php b/core/modules/views/tests/src/Unit/Plugin/area/ViewTest.php
index 4f095fb4476f..b8d2a81725c6 100644
--- a/core/modules/views/tests/src/Unit/Plugin/area/ViewTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/area/ViewTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\area;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/argument_default/QueryParameterTest.php b/core/modules/views/tests/src/Unit/Plugin/argument_default/QueryParameterTest.php
index f6ac061f99e6..28f1adc6d2c4 100644
--- a/core/modules/views/tests/src/Unit/Plugin/argument_default/QueryParameterTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/argument_default/QueryParameterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\argument_default;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/argument_default/RawTest.php b/core/modules/views/tests/src/Unit/Plugin/argument_default/RawTest.php
index 66c5c9772f9e..83a370ed868f 100644
--- a/core/modules/views/tests/src/Unit/Plugin/argument_default/RawTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/argument_default/RawTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\argument_default;
use Drupal\Core\Path\CurrentPathStack;
diff --git a/core/modules/views/tests/src/Unit/Plugin/argument_validator/EntityTest.php b/core/modules/views/tests/src/Unit/Plugin/argument_validator/EntityTest.php
index 0b021fd61d88..e10477d46081 100644
--- a/core/modules/views/tests/src/Unit/Plugin/argument_validator/EntityTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/argument_validator/EntityTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\argument_validator;
use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/display/PageTest.php b/core/modules/views/tests/src/Unit/Plugin/display/PageTest.php
index 89b1cf2c836b..c801ec556fcf 100644
--- a/core/modules/views/tests/src/Unit/Plugin/display/PageTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/display/PageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\display;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/display/PathPluginBaseTest.php b/core/modules/views/tests/src/Unit/Plugin/display/PathPluginBaseTest.php
index 968adcc38eed..ae4701156864 100644
--- a/core/modules/views/tests/src/Unit/Plugin/display/PathPluginBaseTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/display/PathPluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\display;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/views/tests/src/Unit/Plugin/field/CounterTest.php b/core/modules/views/tests/src/Unit/Plugin/field/CounterTest.php
index aeb8cae4d068..9e9c39f9376a 100644
--- a/core/modules/views/tests/src/Unit/Plugin/field/CounterTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/field/CounterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\field;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/field/FieldPluginBaseTest.php b/core/modules/views/tests/src/Unit/Plugin/field/FieldPluginBaseTest.php
index 4ddf6ab5644e..11e082f29704 100644
--- a/core/modules/views/tests/src/Unit/Plugin/field/FieldPluginBaseTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/field/FieldPluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\field;
use Drupal\Core\GeneratedUrl;
diff --git a/core/modules/views/tests/src/Unit/Plugin/field/FieldTest.php b/core/modules/views/tests/src/Unit/Plugin/field/FieldTest.php
index 6cda638d760e..999d55fb91d3 100644
--- a/core/modules/views/tests/src/Unit/Plugin/field/FieldTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/field/FieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\field;
use Drupal\Core\Entity\EntityFieldManagerInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/filter/FilterPluginBaseTest.php b/core/modules/views/tests/src/Unit/Plugin/filter/FilterPluginBaseTest.php
index 004f65370974..45b1778deaa5 100644
--- a/core/modules/views/tests/src/Unit/Plugin/filter/FilterPluginBaseTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/filter/FilterPluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\filter;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/filter/InOperatorTest.php b/core/modules/views/tests/src/Unit/Plugin/filter/InOperatorTest.php
index 7f80c6842d77..7a208c3b0a95 100644
--- a/core/modules/views/tests/src/Unit/Plugin/filter/InOperatorTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/filter/InOperatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\filter;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/pager/PagerPluginBaseTest.php b/core/modules/views/tests/src/Unit/Plugin/pager/PagerPluginBaseTest.php
index 89dbc931d3b0..053382c8838d 100644
--- a/core/modules/views/tests/src/Unit/Plugin/pager/PagerPluginBaseTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/pager/PagerPluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\pager;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/pager/SqlBaseTest.php b/core/modules/views/tests/src/Unit/Plugin/pager/SqlBaseTest.php
index b10019b5f29b..a51f267792f6 100644
--- a/core/modules/views/tests/src/Unit/Plugin/pager/SqlBaseTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/pager/SqlBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\pager;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/views/tests/src/Unit/Plugin/query/SqlTest.php b/core/modules/views/tests/src/Unit/Plugin/query/SqlTest.php
index 875cf47f19f0..90366e10bc29 100644
--- a/core/modules/views/tests/src/Unit/Plugin/query/SqlTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/query/SqlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\query;
use Drupal\Core\Entity\EntityInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/display/BlockTest.php b/core/modules/views/tests/src/Unit/Plugin/views/display/BlockTest.php
index bc191018246d..29c3851b2ce3 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/display/BlockTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/display/BlockTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\display;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/field/BulkFormTest.php b/core/modules/views/tests/src/Unit/Plugin/views/field/BulkFormTest.php
index e7629346c6ac..c2282bf5fa38 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/field/BulkFormTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/field/BulkFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\field;
use Drupal\Core\Form\FormStateInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/field/EntityOperationsUnitTest.php b/core/modules/views/tests/src/Unit/Plugin/views/field/EntityOperationsUnitTest.php
index c575aa6b21cd..4e6dad459784 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/field/EntityOperationsUnitTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/field/EntityOperationsUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\field;
use Drupal\Core\Entity\EntityRepositoryInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/field/LinkBaseTest.php b/core/modules/views/tests/src/Unit/Plugin/views/field/LinkBaseTest.php
index 897a86ae3fc6..effdc2e36e0b 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/field/LinkBaseTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/field/LinkBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\field;
use Drupal\Core\Access\AccessManagerInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/field/RenderedEntityTest.php b/core/modules/views/tests/src/Unit/Plugin/views/field/RenderedEntityTest.php
index 8639db20f9ab..64cd8f7dbeef 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/field/RenderedEntityTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/field/RenderedEntityTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\field;
use Drupal\Core\Entity\EntityDisplayRepositoryInterface;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/query/MysqlDateSqlTest.php b/core/modules/views/tests/src/Unit/Plugin/views/query/MysqlDateSqlTest.php
index bbfc7b638e7b..03f381174b71 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/query/MysqlDateSqlTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/query/MysqlDateSqlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\query;
use Drupal\Core\Database\Connection;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/query/PostgresqlDateSqlTest.php b/core/modules/views/tests/src/Unit/Plugin/views/query/PostgresqlDateSqlTest.php
index e1892b961288..e9379825d511 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/query/PostgresqlDateSqlTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/query/PostgresqlDateSqlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\query;
use Drupal\Core\Database\Connection;
diff --git a/core/modules/views/tests/src/Unit/Plugin/views/query/SqliteDateSqlTest.php b/core/modules/views/tests/src/Unit/Plugin/views/query/SqliteDateSqlTest.php
index 3de9ba72fae3..e2406750a793 100644
--- a/core/modules/views/tests/src/Unit/Plugin/views/query/SqliteDateSqlTest.php
+++ b/core/modules/views/tests/src/Unit/Plugin/views/query/SqliteDateSqlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Plugin\views\query;
use Drupal\Core\Database\Connection;
diff --git a/core/modules/views/tests/src/Unit/PluginBaseTest.php b/core/modules/views/tests/src/Unit/PluginBaseTest.php
index 8d2f8e0d4cce..e185aa7ca928 100644
--- a/core/modules/views/tests/src/Unit/PluginBaseTest.php
+++ b/core/modules/views/tests/src/Unit/PluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/PluginTypeListTest.php b/core/modules/views/tests/src/Unit/PluginTypeListTest.php
index ee84e5312717..228b1052c7aa 100644
--- a/core/modules/views/tests/src/Unit/PluginTypeListTest.php
+++ b/core/modules/views/tests/src/Unit/PluginTypeListTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\views\ViewExecutable;
diff --git a/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php b/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
index 841fe19c4772..57db7fe28718 100644
--- a/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
+++ b/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit\Routing;
use Drupal\Core\Routing\RouteMatch;
diff --git a/core/modules/views/tests/src/Unit/ViewExecutableFactoryTest.php b/core/modules/views/tests/src/Unit/ViewExecutableFactoryTest.php
index e683f9aee85e..815fd1e186de 100644
--- a/core/modules/views/tests/src/Unit/ViewExecutableFactoryTest.php
+++ b/core/modules/views/tests/src/Unit/ViewExecutableFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/ViewExecutableTest.php b/core/modules/views/tests/src/Unit/ViewExecutableTest.php
index e377b89536f6..f8eaaafedb70 100644
--- a/core/modules/views/tests/src/Unit/ViewExecutableTest.php
+++ b/core/modules/views/tests/src/Unit/ViewExecutableTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Component\Plugin\PluginManagerInterface;
diff --git a/core/modules/views/tests/src/Unit/ViewsDataHelperTest.php b/core/modules/views/tests/src/Unit/ViewsDataHelperTest.php
index e481bb3faa77..fae9639b996a 100644
--- a/core/modules/views/tests/src/Unit/ViewsDataHelperTest.php
+++ b/core/modules/views/tests/src/Unit/ViewsDataHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/ViewsDataTest.php b/core/modules/views/tests/src/Unit/ViewsDataTest.php
index b382c427cd40..84d7835037af 100644
--- a/core/modules/views/tests/src/Unit/ViewsDataTest.php
+++ b/core/modules/views/tests/src/Unit/ViewsDataTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Core\Language\Language;
diff --git a/core/modules/views/tests/src/Unit/ViewsHandlerManagerTest.php b/core/modules/views/tests/src/Unit/ViewsHandlerManagerTest.php
index 70aeecb98e3f..159f860c29be 100644
--- a/core/modules/views/tests/src/Unit/ViewsHandlerManagerTest.php
+++ b/core/modules/views/tests/src/Unit/ViewsHandlerManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views/tests/src/Unit/ViewsTest.php b/core/modules/views/tests/src/Unit/ViewsTest.php
index 5eb36e4c0de5..5c750c9b0a9c 100644
--- a/core/modules/views/tests/src/Unit/ViewsTest.php
+++ b/core/modules/views/tests/src/Unit/ViewsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Core\Entity\EntityStorageInterface;
diff --git a/core/modules/views/tests/src/Unit/WizardPluginBaseTest.php b/core/modules/views/tests/src/Unit/WizardPluginBaseTest.php
index 965fab2565c9..97f5dfd0f21f 100644
--- a/core/modules/views/tests/src/Unit/WizardPluginBaseTest.php
+++ b/core/modules/views/tests/src/Unit/WizardPluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views\Unit;
use Drupal\Core\Form\FormState;
diff --git a/core/modules/views_ui/tests/src/Unit/Form/Ajax/RearrangeFilterTest.php b/core/modules/views_ui/tests/src/Unit/Form/Ajax/RearrangeFilterTest.php
index b2d3f96ab626..a47c8450bdd4 100644
--- a/core/modules/views_ui/tests/src/Unit/Form/Ajax/RearrangeFilterTest.php
+++ b/core/modules/views_ui/tests/src/Unit/Form/Ajax/RearrangeFilterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views_ui\Unit\Form\Ajax;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/views_ui/tests/src/Unit/ViewListBuilderTest.php b/core/modules/views_ui/tests/src/Unit/ViewListBuilderTest.php
index 9556687d97f5..19566a9ed2bc 100644
--- a/core/modules/views_ui/tests/src/Unit/ViewListBuilderTest.php
+++ b/core/modules/views_ui/tests/src/Unit/ViewListBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views_ui\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/views_ui/tests/src/Unit/ViewUIObjectTest.php b/core/modules/views_ui/tests/src/Unit/ViewUIObjectTest.php
index 36b4933a6f53..d98a31dd04c4 100644
--- a/core/modules/views_ui/tests/src/Unit/ViewUIObjectTest.php
+++ b/core/modules/views_ui/tests/src/Unit/ViewUIObjectTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\views_ui\Unit;
use Drupal\Core\Language\LanguageInterface;
diff --git a/core/modules/workflows/tests/src/Unit/StateTest.php b/core/modules/workflows/tests/src/Unit/StateTest.php
index 2790a8051a50..2ce55c4745c6 100644
--- a/core/modules/workflows/tests/src/Unit/StateTest.php
+++ b/core/modules/workflows/tests/src/Unit/StateTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\workflows\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/workflows/tests/src/Unit/TransitionTest.php b/core/modules/workflows/tests/src/Unit/TransitionTest.php
index bbab5cf53129..5ff7d02abbde 100644
--- a/core/modules/workflows/tests/src/Unit/TransitionTest.php
+++ b/core/modules/workflows/tests/src/Unit/TransitionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\workflows\Unit;
use Drupal\Tests\UnitTestCase;
diff --git a/core/modules/workflows/tests/src/Unit/WorkflowStateTransitionOperationsAccessCheckTest.php b/core/modules/workflows/tests/src/Unit/WorkflowStateTransitionOperationsAccessCheckTest.php
index 63f1fec26e71..ad01d100e8ac 100644
--- a/core/modules/workflows/tests/src/Unit/WorkflowStateTransitionOperationsAccessCheckTest.php
+++ b/core/modules/workflows/tests/src/Unit/WorkflowStateTransitionOperationsAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\workflows\Unit;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/workflows/tests/src/Unit/WorkflowTest.php b/core/modules/workflows/tests/src/Unit/WorkflowTest.php
index 7db051e46296..d15567d22cd9 100644
--- a/core/modules/workflows/tests/src/Unit/WorkflowTest.php
+++ b/core/modules/workflows/tests/src/Unit/WorkflowTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\workflows\Unit;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/modules/workspaces/tests/src/Unit/ActiveWorkspaceCheckTest.php b/core/modules/workspaces/tests/src/Unit/ActiveWorkspaceCheckTest.php
index 8ecc144800c6..b5093824ca92 100644
--- a/core/modules/workspaces/tests/src/Unit/ActiveWorkspaceCheckTest.php
+++ b/core/modules/workspaces/tests/src/Unit/ActiveWorkspaceCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\workspaces\Unit;
use Drupal\Core\Access\AccessResult;
diff --git a/core/modules/workspaces/tests/src/Unit/WorkspaceRequestSubscriberTest.php b/core/modules/workspaces/tests/src/Unit/WorkspaceRequestSubscriberTest.php
index 8eb381737dea..2e40fff58c48 100644
--- a/core/modules/workspaces/tests/src/Unit/WorkspaceRequestSubscriberTest.php
+++ b/core/modules/workspaces/tests/src/Unit/WorkspaceRequestSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\workspaces\Unit;
use Drupal\path_alias\AliasManagerInterface;
diff --git a/core/phpcs.xml.dist b/core/phpcs.xml.dist
index ec7fb9dc49ae..195479831ccb 100644
--- a/core/phpcs.xml.dist
+++ b/core/phpcs.xml.dist
@@ -276,11 +276,15 @@
<!-- <include-pattern>*/tests/*</include-pattern> -->
<include-pattern>*/tests/src/FunctionalJavascript/*</include-pattern>
<include-pattern>*/tests/src/Traits/*</include-pattern>
+ <include-pattern>*/tests/src/Unit/*</include-pattern>
<include-pattern>./tests/Drupal/BuildTests/*</include-pattern>
<include-pattern>./tests/Drupal/FunctionalJavascriptTests/*</include-pattern>
+ <include-pattern>./tests/Drupal/Tests/*/*.php</include-pattern>
<include-pattern>./tests/Drupal/Tests/*Trait.php</include-pattern>
<include-pattern>./tests/Drupal/Tests/Traits/*</include-pattern>
<exclude-pattern>./tests/Drupal/Tests/Listeners/*</exclude-pattern>
+ <exclude-pattern>./tests/Drupal/Tests/*/Fixture/*</exclude-pattern>
+ <exclude-pattern>./tests/Drupal/Tests/*/fixtures/*</exclude-pattern>
</rule>
<!-- Squiz sniffs -->
diff --git a/core/tests/Drupal/Tests/CSpell/SortTest.php b/core/tests/Drupal/Tests/CSpell/SortTest.php
index cfc1621167fc..1b55eb542ce2 100644
--- a/core/tests/Drupal/Tests/CSpell/SortTest.php
+++ b/core/tests/Drupal/Tests/CSpell/SortTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\CSpell;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryCachedTest.php b/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryCachedTest.php
index 899295cbeb3e..944f479a7cd8 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryCachedTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryCachedTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation;
use Drupal\Component\Annotation\Plugin\Discovery\AnnotatedClassDiscovery;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryTest.php b/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryTest.php
index ceada7a5a969..97e1a6bec507 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/AnnotatedClassDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation;
use Drupal\Component\Annotation\Plugin;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/AnnotationBaseTest.php b/core/tests/Drupal/Tests/Component/Annotation/AnnotationBaseTest.php
index 91d5ae28c3ec..28824ecb5d93 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/AnnotationBaseTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/AnnotationBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation;
use Drupal\Component\Annotation\AnnotationBase;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/DocParserIgnoredClassesTest.php b/core/tests/Drupal/Tests/Component/Annotation/DocParserIgnoredClassesTest.php
index bf1a4cdbf97d..7ef3f2638a63 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/DocParserIgnoredClassesTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/DocParserIgnoredClassesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation;
use Drupal\Component\Annotation\Doctrine\DocParser;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/DocParserTest.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/DocParserTest.php
index e9addd67e7db..14314de2d886 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/DocParserTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/DocParserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine;
use Drupal\Component\Annotation\Doctrine\DocParser;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/AnnotWithDefaultValue.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/AnnotWithDefaultValue.php
index 7b7967290873..a13eeb72157e 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/AnnotWithDefaultValue.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/AnnotWithDefaultValue.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures\Annotation;
/** @Annotation */
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Autoload.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Autoload.php
index 6102dc32d42a..6718468b1e28 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Autoload.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Autoload.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures\Annotation;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Route.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Route.php
index e32464fa12bb..da3eb2f1d3a9 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Route.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Route.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures\Annotation;
/** @Annotation */
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Secure.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Secure.php
index 48336f1eefcc..c1bdc8705d7a 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Secure.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Secure.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures\Annotation;
/** @Annotation */
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Template.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Template.php
index bc31bad21abd..6362b60f5cbd 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Template.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Template.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures\Annotation;
/** @Annotation */
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Version.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Version.php
index 5c4789dc455b..cecfcfebd665 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Version.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/Annotation/Version.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures\Annotation;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnum.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnum.php
index 8c8993dcd858..65f4001659a5 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnum.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnum.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumInvalid.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumInvalid.php
index 3a1f94ff0000..5737ede3404c 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumInvalid.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumInvalid.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteral.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteral.php
index 3dc91a66bc45..9c68bfd61e1f 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteral.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteral.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
use Drupal\Tests\Component\Annotation\Doctrine\Fixtures\AnnotationEnumLiteral as SelfEnum;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteralInvalid.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteralInvalid.php
index b4c9abd9be44..a50c1f117a85 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteralInvalid.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationEnumLiteralInvalid.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAll.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAll.php
index c40c380630aa..fb256bd8b3f1 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAll.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAll.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAnnotation.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAnnotation.php
index bfd65032ea2e..fab208f762bf 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAnnotation.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetAnnotation.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetClass.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetClass.php
index f36e90512817..58e5770079ba 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetClass.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetClass.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetPropertyMethod.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetPropertyMethod.php
index 31586b1e7aa2..984eee91289a 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetPropertyMethod.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationTargetPropertyMethod.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithAttributes.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithAttributes.php
index 89985aedf539..594a159a39e4 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithAttributes.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithAttributes.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithConstants.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithConstants.php
index f03957c31ac5..a2ef97ddf620 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithConstants.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithConstants.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributes.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributes.php
index 77983ef745fd..767d7d86f7bb 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributes.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributes.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributesWithoutContructor.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributesWithoutContructor.php
index f0b3c1d486ef..dbfa95f659f9 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributesWithoutContructor.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithRequiredAttributesWithoutContructor.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithTargetSyntaxError.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithTargetSyntaxError.php
index 4ab0423ca352..852d7ca4affb 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithTargetSyntaxError.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithTargetSyntaxError.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithVarType.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithVarType.php
index 17cc5e02a1b9..07492496a94d 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithVarType.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/AnnotationWithVarType.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithConstants.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithConstants.php
index 485d8cbb2d0f..75e55bc6bb94 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithConstants.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithConstants.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
class ClassWithConstants
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtClass.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtClass.php
index 896b64a8bee8..9b2b7912016f 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtClass.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtClass.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
use Drupal\Tests\Component\Annotation\Doctrine\Fixtures\AnnotationTargetPropertyMethod;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtMethod.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtMethod.php
index 5a023ec46e23..a42ef04eb6d2 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtMethod.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtMethod.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
use Drupal\Tests\Component\Annotation\Doctrine\Fixtures\AnnotationTargetClass;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtProperty.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtProperty.php
index 456c1bbfd223..162d8fa33152 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtProperty.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithInvalidAnnotationTargetAtProperty.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
use Drupal\Tests\Component\Annotation\Doctrine\Fixtures\AnnotationTargetClass;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithValidAnnotationTarget.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithValidAnnotationTarget.php
index 08551525b0ac..d35e5f289c43 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithValidAnnotationTarget.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/ClassWithValidAnnotationTarget.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
use Drupal\Tests\Component\Annotation\Doctrine\Fixtures\AnnotationTargetClass;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/IntefaceWithConstants.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/IntefaceWithConstants.php
index 0b9db8ce0cce..9102b1487399 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/IntefaceWithConstants.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Fixtures/IntefaceWithConstants.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Fixtures;
interface IntefaceWithConstants
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Entity.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Entity.php
index 870ccc91aa79..58687d033206 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Entity.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Entity.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
// Some class named Entity in the global namespace
/**
* This class is a near-copy of
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Test.php b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Test.php
index 8f0d3f945a82..58c79c5a9677 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Test.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Doctrine/Ticket/DCOM58Test.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Doctrine\Ticket;
use Drupal\Component\Annotation\Doctrine\DocParser;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Fixtures/PluginNamespace/DiscoveryTest1.php b/core/tests/Drupal/Tests/Component/Annotation/Fixtures/PluginNamespace/DiscoveryTest1.php
index e99ad5fb3270..d99bf9e135e1 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Fixtures/PluginNamespace/DiscoveryTest1.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Fixtures/PluginNamespace/DiscoveryTest1.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace com\example\PluginNamespace;
/**
diff --git a/core/tests/Drupal/Tests/Component/Annotation/MockFileFinderTest.php b/core/tests/Drupal/Tests/Component/Annotation/MockFileFinderTest.php
index f1983ffcd917..7e45602d9112 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/MockFileFinderTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/MockFileFinderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation;
use Drupal\Component\Annotation\Reflection\MockFileFinder;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/Plugin/Discovery/AnnotationBridgeDecoratorTest.php b/core/tests/Drupal/Tests/Component/Annotation/Plugin/Discovery/AnnotationBridgeDecoratorTest.php
index 848f499ee106..d4fbd465c76d 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/Plugin/Discovery/AnnotationBridgeDecoratorTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/Plugin/Discovery/AnnotationBridgeDecoratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation\Plugin\Discovery;
use Drupal\Component\Annotation\Plugin;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/PluginIdTest.php b/core/tests/Drupal/Tests/Component/Annotation/PluginIdTest.php
index 15cd6e860d60..cb22ff6f0713 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/PluginIdTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/PluginIdTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation;
use Drupal\Component\Annotation\PluginID;
diff --git a/core/tests/Drupal/Tests/Component/Annotation/PluginTest.php b/core/tests/Drupal/Tests/Component/Annotation/PluginTest.php
index 54655e722c10..5c106d70a5b8 100644
--- a/core/tests/Drupal/Tests/Component/Annotation/PluginTest.php
+++ b/core/tests/Drupal/Tests/Component/Annotation/PluginTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Annotation;
use Drupal\Component\Annotation\Plugin;
diff --git a/core/tests/Drupal/Tests/Component/Assertion/InspectorTest.php b/core/tests/Drupal/Tests/Component/Assertion/InspectorTest.php
index 4f79f764634f..384bb30ed5d9 100644
--- a/core/tests/Drupal/Tests/Component/Assertion/InspectorTest.php
+++ b/core/tests/Drupal/Tests/Component/Assertion/InspectorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Assertion;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Component/ClassFinder/ClassFinderTest.php b/core/tests/Drupal/Tests/Component/ClassFinder/ClassFinderTest.php
index eb6c32dcc8fe..c7742e4cd7e1 100644
--- a/core/tests/Drupal/Tests/Component/ClassFinder/ClassFinderTest.php
+++ b/core/tests/Drupal/Tests/Component/ClassFinder/ClassFinderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\ClassFinder;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php b/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php
index dcfa56ca9135..28c91f351c9e 100644
--- a/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php
+++ b/core/tests/Drupal/Tests/Component/Datetime/DateTimePlusTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Datetime;
use Drupal\Component\Datetime\DateTimePlus;
diff --git a/core/tests/Drupal/Tests/Component/Datetime/TimeTest.php b/core/tests/Drupal/Tests/Component/Datetime/TimeTest.php
index f5de7d970820..7065141c39f4 100644
--- a/core/tests/Drupal/Tests/Component/Datetime/TimeTest.php
+++ b/core/tests/Drupal/Tests/Component/Datetime/TimeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Datetime;
use Drupal\Component\Datetime\Time;
diff --git a/core/tests/Drupal/Tests/Component/Datetime/TimeWithNoRequestTest.php b/core/tests/Drupal/Tests/Component/Datetime/TimeWithNoRequestTest.php
index c66e1bb44007..7eaf6e6130f4 100644
--- a/core/tests/Drupal/Tests/Component/Datetime/TimeWithNoRequestTest.php
+++ b/core/tests/Drupal/Tests/Component/Datetime/TimeWithNoRequestTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Datetime;
use Drupal\Component\Datetime\Time;
diff --git a/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php b/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php
index 5a43e8290c7d..5dfc90fea553 100644
--- a/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php
+++ b/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\DependencyInjection;
use Drupal\Component\Utility\Crypt;
diff --git a/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumperTest.php b/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumperTest.php
index 3f9547b2e572..2942dd808786 100644
--- a/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumperTest.php
+++ b/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\DependencyInjection\Dumper {
use Drupal\Component\Utility\Crypt;
diff --git a/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/PhpArrayDumperTest.php b/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/PhpArrayDumperTest.php
index 91abfe4fc64f..1005b57deea0 100644
--- a/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/PhpArrayDumperTest.php
+++ b/core/tests/Drupal/Tests/Component/DependencyInjection/Dumper/PhpArrayDumperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\DependencyInjection\Dumper;
use Symfony\Component\DependencyInjection\ContainerInterface;
diff --git a/core/tests/Drupal/Tests/Component/DependencyInjection/PhpArrayContainerTest.php b/core/tests/Drupal/Tests/Component/DependencyInjection/PhpArrayContainerTest.php
index 0623ceab339c..03cb68a3dc05 100644
--- a/core/tests/Drupal/Tests/Component/DependencyInjection/PhpArrayContainerTest.php
+++ b/core/tests/Drupal/Tests/Component/DependencyInjection/PhpArrayContainerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\DependencyInjection;
use Symfony\Component\DependencyInjection\ContainerInterface;
diff --git a/core/tests/Drupal/Tests/Component/DependencyInjection/ReverseContainerTest.php b/core/tests/Drupal/Tests/Component/DependencyInjection/ReverseContainerTest.php
index 8fa731916508..22a2539071e9 100644
--- a/core/tests/Drupal/Tests/Component/DependencyInjection/ReverseContainerTest.php
+++ b/core/tests/Drupal/Tests/Component/DependencyInjection/ReverseContainerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\DependencyInjection;
use Drupal\Component\DependencyInjection\ReverseContainer;
diff --git a/core/tests/Drupal/Tests/Component/Diff/DiffFormatterTest.php b/core/tests/Drupal/Tests/Component/Diff/DiffFormatterTest.php
index c5fab90921d0..b0f25967fc70 100644
--- a/core/tests/Drupal/Tests/Component/Diff/DiffFormatterTest.php
+++ b/core/tests/Drupal/Tests/Component/Diff/DiffFormatterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Diff;
use Drupal\Component\Diff\Diff;
diff --git a/core/tests/Drupal/Tests/Component/Diff/DiffOpOutputBuilderTest.php b/core/tests/Drupal/Tests/Component/Diff/DiffOpOutputBuilderTest.php
index 50b20ff8e167..6c169fcb6dfc 100644
--- a/core/tests/Drupal/Tests/Component/Diff/DiffOpOutputBuilderTest.php
+++ b/core/tests/Drupal/Tests/Component/Diff/DiffOpOutputBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Diff;
use Drupal\Component\Diff\DiffOpOutputBuilder;
diff --git a/core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php b/core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php
index 5feba62a3a95..dce6e52b2cb1 100644
--- a/core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php
+++ b/core/tests/Drupal/Tests/Component/Diff/Engine/DiffEngineTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Diff\Engine;
use Drupal\Component\Diff\Engine\DiffEngine;
diff --git a/core/tests/Drupal/Tests/Component/Diff/Engine/DiffOpTest.php b/core/tests/Drupal/Tests/Component/Diff/Engine/DiffOpTest.php
index fa2dee1a029e..d45aef5858df 100644
--- a/core/tests/Drupal/Tests/Component/Diff/Engine/DiffOpTest.php
+++ b/core/tests/Drupal/Tests/Component/Diff/Engine/DiffOpTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Diff\Engine;
use Drupal\Component\Diff\Engine\DiffOp;
diff --git a/core/tests/Drupal/Tests/Component/Diff/Engine/HWLDFWordAccumulatorTest.php b/core/tests/Drupal/Tests/Component/Diff/Engine/HWLDFWordAccumulatorTest.php
index 194f37f50eb4..3c75df16e424 100644
--- a/core/tests/Drupal/Tests/Component/Diff/Engine/HWLDFWordAccumulatorTest.php
+++ b/core/tests/Drupal/Tests/Component/Diff/Engine/HWLDFWordAccumulatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Diff\Engine;
use Drupal\Component\Diff\Engine\HWLDFWordAccumulator;
diff --git a/core/tests/Drupal/Tests/Component/Discovery/YamlDirectoryDiscoveryTest.php b/core/tests/Drupal/Tests/Component/Discovery/YamlDirectoryDiscoveryTest.php
index 3d1be4721607..ce8744744c4e 100644
--- a/core/tests/Drupal/Tests/Component/Discovery/YamlDirectoryDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Component/Discovery/YamlDirectoryDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Discovery;
use Drupal\Component\Discovery\DiscoveryException;
diff --git a/core/tests/Drupal/Tests/Component/Discovery/YamlDiscoveryTest.php b/core/tests/Drupal/Tests/Component/Discovery/YamlDiscoveryTest.php
index 8f5d01ec6fca..2f0cf2af14d3 100644
--- a/core/tests/Drupal/Tests/Component/Discovery/YamlDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Component/Discovery/YamlDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Discovery;
use Drupal\Component\Discovery\YamlDiscovery;
diff --git a/core/tests/Drupal/Tests/Component/DrupalComponentTest.php b/core/tests/Drupal/Tests/Component/DrupalComponentTest.php
index 11855926a641..09e356765d34 100644
--- a/core/tests/Drupal/Tests/Component/DrupalComponentTest.php
+++ b/core/tests/Drupal/Tests/Component/DrupalComponentTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component;
use org\bovigo\vfs\vfsStream;
diff --git a/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php b/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
index bc61186c0fb6..a8fd9e87d602 100644
--- a/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
+++ b/core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\EventDispatcher;
use Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher;
diff --git a/core/tests/Drupal/Tests/Component/FileCache/FileCacheFactoryTest.php b/core/tests/Drupal/Tests/Component/FileCache/FileCacheFactoryTest.php
index c21bc5bf3812..7e6d9c2a61b5 100644
--- a/core/tests/Drupal/Tests/Component/FileCache/FileCacheFactoryTest.php
+++ b/core/tests/Drupal/Tests/Component/FileCache/FileCacheFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\FileCache;
use Drupal\Component\FileCache\FileCache;
diff --git a/core/tests/Drupal/Tests/Component/FileCache/FileCacheTest.php b/core/tests/Drupal/Tests/Component/FileCache/FileCacheTest.php
index 30edddb32276..610a90905c56 100644
--- a/core/tests/Drupal/Tests/Component/FileCache/FileCacheTest.php
+++ b/core/tests/Drupal/Tests/Component/FileCache/FileCacheTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\FileCache;
use Drupal\Component\FileCache\FileCache;
diff --git a/core/tests/Drupal/Tests/Component/FileCache/StaticFileCacheBackend.php b/core/tests/Drupal/Tests/Component/FileCache/StaticFileCacheBackend.php
index 32fa21526114..15efaf8b1a86 100644
--- a/core/tests/Drupal/Tests/Component/FileCache/StaticFileCacheBackend.php
+++ b/core/tests/Drupal/Tests/Component/FileCache/StaticFileCacheBackend.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\FileCache;
use Drupal\Component\FileCache\FileCacheBackendInterface;
diff --git a/core/tests/Drupal/Tests/Component/FileSecurity/FileSecurityTest.php b/core/tests/Drupal/Tests/Component/FileSecurity/FileSecurityTest.php
index 4e4182bae605..8b1cd24194fc 100644
--- a/core/tests/Drupal/Tests/Component/FileSecurity/FileSecurityTest.php
+++ b/core/tests/Drupal/Tests/Component/FileSecurity/FileSecurityTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\FileSecurity;
use Drupal\Component\FileSecurity\FileSecurity;
diff --git a/core/tests/Drupal/Tests/Component/FileSystem/RegexDirectoryIteratorTest.php b/core/tests/Drupal/Tests/Component/FileSystem/RegexDirectoryIteratorTest.php
index 0d1ef58c1952..c340f14630b0 100644
--- a/core/tests/Drupal/Tests/Component/FileSystem/RegexDirectoryIteratorTest.php
+++ b/core/tests/Drupal/Tests/Component/FileSystem/RegexDirectoryIteratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\FileSystem;
use Drupal\Component\FileSystem\RegexDirectoryIterator;
diff --git a/core/tests/Drupal/Tests/Component/FrontMatter/FrontMatterTest.php b/core/tests/Drupal/Tests/Component/FrontMatter/FrontMatterTest.php
index 3e6a27aabf1d..5c91f5efb343 100644
--- a/core/tests/Drupal/Tests/Component/FrontMatter/FrontMatterTest.php
+++ b/core/tests/Drupal/Tests/Component/FrontMatter/FrontMatterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\FrontMatter;
use Drupal\Component\FrontMatter\Exception\FrontMatterParseException;
diff --git a/core/tests/Drupal/Tests/Component/Gettext/PoHeaderTest.php b/core/tests/Drupal/Tests/Component/Gettext/PoHeaderTest.php
index 0d000d59d633..c0ba7cf6ff1a 100644
--- a/core/tests/Drupal/Tests/Component/Gettext/PoHeaderTest.php
+++ b/core/tests/Drupal/Tests/Component/Gettext/PoHeaderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Gettext;
use Drupal\Component\Gettext\PoHeader;
diff --git a/core/tests/Drupal/Tests/Component/Gettext/PoStreamWriterTest.php b/core/tests/Drupal/Tests/Component/Gettext/PoStreamWriterTest.php
index b9127a408b80..f120955571da 100644
--- a/core/tests/Drupal/Tests/Component/Gettext/PoStreamWriterTest.php
+++ b/core/tests/Drupal/Tests/Component/Gettext/PoStreamWriterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Gettext;
use Drupal\Component\Gettext\PoHeader;
diff --git a/core/tests/Drupal/Tests/Component/Graph/GraphTest.php b/core/tests/Drupal/Tests/Component/Graph/GraphTest.php
index 2773d46ba309..3fa25a7f1fa1 100644
--- a/core/tests/Drupal/Tests/Component/Graph/GraphTest.php
+++ b/core/tests/Drupal/Tests/Component/Graph/GraphTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Graph;
use Drupal\Component\Graph\Graph;
diff --git a/core/tests/Drupal/Tests/Component/HttpFoundation/SecuredRedirectResponseTest.php b/core/tests/Drupal/Tests/Component/HttpFoundation/SecuredRedirectResponseTest.php
index 3cc97464f751..893072de6fb4 100644
--- a/core/tests/Drupal/Tests/Component/HttpFoundation/SecuredRedirectResponseTest.php
+++ b/core/tests/Drupal/Tests/Component/HttpFoundation/SecuredRedirectResponseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\HttpFoundation;
use Drupal\Component\HttpFoundation\SecuredRedirectResponse;
diff --git a/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageReadOnlyTest.php b/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageReadOnlyTest.php
index 22975ddea42b..6233e5b1b41c 100644
--- a/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageReadOnlyTest.php
+++ b/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageReadOnlyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\PhpStorage;
use Drupal\Component\PhpStorage\FileStorage;
diff --git a/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageTest.php b/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageTest.php
index 51426a28576e..d7ca82e28bef 100644
--- a/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageTest.php
+++ b/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\PhpStorage;
use Drupal\Component\PhpStorage\FileStorage;
diff --git a/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFastFileStorageTest.php b/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFastFileStorageTest.php
index 66ea316fdfe9..222ca9031bf0 100644
--- a/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFastFileStorageTest.php
+++ b/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFastFileStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\PhpStorage;
/**
diff --git a/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageBase.php b/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageBase.php
index b04a9f4ac5e6..d38cdefba60e 100644
--- a/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageBase.php
+++ b/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\PhpStorage;
use Drupal\Component\FileSecurity\FileSecurity;
diff --git a/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageTest.php b/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageTest.php
index 775a43ff2887..ef3b0ac478ad 100644
--- a/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageTest.php
+++ b/core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\PhpStorage;
/**
diff --git a/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php b/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php
index c670bebadf4e..84456df49ce2 100644
--- a/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php
+++ b/core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\PhpStorage;
use Drupal\Component\PhpStorage\PhpStorageInterface;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeBaseTest.php b/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeBaseTest.php
index 1f9a5657a66a..877a0fae2e5e 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeBaseTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Attribute;
use Drupal\Component\Plugin\Attribute\AttributeBase;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryCachedTest.php b/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryCachedTest.php
index d68a724b566f..4798504927b5 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryCachedTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryCachedTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Attribute;
use Drupal\Component\Plugin\Discovery\AttributeClassDiscovery;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryTest.php b/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryTest.php
index 965254c719e3..92b8fede1c44 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Attribute/AttributeClassDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Attribute;
use Drupal\Component\Plugin\Discovery\AttributeClassDiscovery;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/CustomPlugin.php b/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/CustomPlugin.php
index 9100fb800d99..eb9730348178 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/CustomPlugin.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/CustomPlugin.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace com\example\PluginNamespace;
use Drupal\Component\Plugin\Attribute\Plugin;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/Plugins/PluginNamespace/AttributeDiscoveryTest1.php b/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/Plugins/PluginNamespace/AttributeDiscoveryTest1.php
index d550e99303e9..3d9d2c79078c 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/Plugins/PluginNamespace/AttributeDiscoveryTest1.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Attribute/Fixtures/Plugins/PluginNamespace/AttributeDiscoveryTest1.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace com\example\PluginNamespace;
use Drupal\Component\Plugin\Attribute\Plugin;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginIdTest.php b/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginIdTest.php
index 8c8391228330..ef34597e786e 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginIdTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginIdTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Attribute;
use Drupal\Component\Plugin\Attribute\PluginID;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginTest.php b/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginTest.php
index 7fdfaa1eb903..48d707f0fa88 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Attribute/PluginTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Attribute;
use Drupal\Component\Plugin\Attribute\Plugin;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Context/ContextTest.php b/core/tests/Drupal/Tests/Component/Plugin/Context/ContextTest.php
index 5a653b49005a..e48973a39f65 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Context/ContextTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Context/ContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Context;
use Drupal\Component\Plugin\Context\Context;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/DefaultFactoryTest.php b/core/tests/Drupal/Tests/Component/Plugin/DefaultFactoryTest.php
index 4d1e5a3d34ca..0413216eeb13 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/DefaultFactoryTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/DefaultFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin;
use Drupal\Component\Plugin\Definition\PluginDefinitionInterface;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Discovery/AnnotatedClassDiscoveryTest.php b/core/tests/Drupal/Tests/Component/Plugin/Discovery/AnnotatedClassDiscoveryTest.php
index 67e9c090e773..28577e83c25e 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Discovery/AnnotatedClassDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Discovery/AnnotatedClassDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Discovery;
use Drupal\Component\Annotation\Plugin\Discovery\AnnotatedClassDiscovery;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Discovery/AttributeBridgeDecoratorTest.php b/core/tests/Drupal/Tests/Component/Plugin/Discovery/AttributeBridgeDecoratorTest.php
index f6b37647a498..8d7be68c1662 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Discovery/AttributeBridgeDecoratorTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Discovery/AttributeBridgeDecoratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Discovery;
use Drupal\Component\Plugin\Attribute\Plugin;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryCachedTraitTest.php b/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryCachedTraitTest.php
index 7895ecddcf35..c6466ba66905 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryCachedTraitTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryCachedTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Discovery;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryTraitTest.php b/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryTraitTest.php
index d3a079655204..b18c95c0c3e7 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryTraitTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Discovery/DiscoveryTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Discovery;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Discovery/StaticDiscoveryDecoratorTest.php b/core/tests/Drupal/Tests/Component/Plugin/Discovery/StaticDiscoveryDecoratorTest.php
index 518eaddc1d3b..b05a7be50281 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Discovery/StaticDiscoveryDecoratorTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Discovery/StaticDiscoveryDecoratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Discovery;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php b/core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php
index 7e19100a81f6..d4446b188632 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Factory;
use Drupal\Component\Plugin\Factory\ReflectionFactory;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Broccoli.php b/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Broccoli.php
index 63c7ed54e381..acf3394748c1 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Broccoli.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Broccoli.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Fixtures\vegetable;
/**
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Corn.php b/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Corn.php
index 201b9b139585..e50b29f06682 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Corn.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/Corn.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Fixtures\vegetable;
/**
diff --git a/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/VegetableInterface.php b/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/VegetableInterface.php
index b9d53ce5a1c5..e79d3fd8521f 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/VegetableInterface.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/Fixtures/vegetable/VegetableInterface.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin\Fixtures\vegetable;
/**
diff --git a/core/tests/Drupal/Tests/Component/Plugin/PluginBaseTest.php b/core/tests/Drupal/Tests/Component/Plugin/PluginBaseTest.php
index ea095b2c0e59..f90fd02a9252 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/PluginBaseTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/PluginBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/PluginHelperLegacyTest.php b/core/tests/Drupal/Tests/Component/Plugin/PluginHelperLegacyTest.php
index 5dc3c674215b..7e775a1b54a8 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/PluginHelperLegacyTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/PluginHelperLegacyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin;
use Drupal\Component\Plugin\ConfigurableInterface;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/PluginManagerBaseTest.php b/core/tests/Drupal/Tests/Component/Plugin/PluginManagerBaseTest.php
index 11e0a403b627..b4c5a6952e4d 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/PluginManagerBaseTest.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/PluginManagerBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/StubFallbackPluginManager.php b/core/tests/Drupal/Tests/Component/Plugin/StubFallbackPluginManager.php
index 50283c6614b5..e59bf38c6275 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/StubFallbackPluginManager.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/StubFallbackPluginManager.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin;
use Drupal\Component\Plugin\FallbackPluginManagerInterface;
diff --git a/core/tests/Drupal/Tests/Component/Plugin/StubPluginManagerBaseWithMapper.php b/core/tests/Drupal/Tests/Component/Plugin/StubPluginManagerBaseWithMapper.php
index 025c684ae745..21661b2bbde8 100644
--- a/core/tests/Drupal/Tests/Component/Plugin/StubPluginManagerBaseWithMapper.php
+++ b/core/tests/Drupal/Tests/Component/Plugin/StubPluginManagerBaseWithMapper.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Plugin;
use Drupal\Component\Plugin\Mapper\MapperInterface;
diff --git a/core/tests/Drupal/Tests/Component/ProxyBuilder/ProxyBuilderTest.php b/core/tests/Drupal/Tests/Component/ProxyBuilder/ProxyBuilderTest.php
index f539886c7c2f..1105b3f1934d 100644
--- a/core/tests/Drupal/Tests/Component/ProxyBuilder/ProxyBuilderTest.php
+++ b/core/tests/Drupal/Tests/Component/ProxyBuilder/ProxyBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\ProxyBuilder;
use Drupal\Component\ProxyBuilder\ProxyBuilder;
diff --git a/core/tests/Drupal/Tests/Component/Render/FormattableMarkupTest.php b/core/tests/Drupal/Tests/Component/Render/FormattableMarkupTest.php
index d9a050e12409..57a79b185cfe 100644
--- a/core/tests/Drupal/Tests/Component/Render/FormattableMarkupTest.php
+++ b/core/tests/Drupal/Tests/Component/Render/FormattableMarkupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Render;
use Drupal\Component\Render\FormattableMarkup;
diff --git a/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php b/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php
index 26fd085e3852..2f09bf1821f0 100644
--- a/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php
+++ b/core/tests/Drupal/Tests/Component/Render/HtmlEscapedTextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Render;
use Drupal\Component\Render\HtmlEscapedText;
diff --git a/core/tests/Drupal/Tests/Component/Render/PlainTextOutputTest.php b/core/tests/Drupal/Tests/Component/Render/PlainTextOutputTest.php
index d68e03521b83..afae2d777fe2 100644
--- a/core/tests/Drupal/Tests/Component/Render/PlainTextOutputTest.php
+++ b/core/tests/Drupal/Tests/Component/Render/PlainTextOutputTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Render;
use Drupal\Component\Render\PlainTextOutput;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/JsonTest.php b/core/tests/Drupal/Tests/Component/Serialization/JsonTest.php
index 2876661d2f8d..a48d7adb15c2 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/JsonTest.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/JsonTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Serialization;
use Drupal\Component\Serialization\Json;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php b/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php
index f002567268da..52e4f6eaab5f 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/YamlPeclTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Serialization;
use Drupal\Component\Serialization\Exception\InvalidDataTypeException;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php b/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php
index 6e88c1571feb..e6c39fba3c25 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/YamlSymfonyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Serialization;
use Drupal\Component\Serialization\Exception\InvalidDataTypeException;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/YamlTest.php b/core/tests/Drupal/Tests/Component/Serialization/YamlTest.php
index 040dcc8e3b25..473de7a5eb8b 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/YamlTest.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/YamlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Serialization;
use Drupal\Component\Serialization\Exception\InvalidDataTypeException;
diff --git a/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php b/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php
index 82226d0d3425..eebd0a22d68c 100644
--- a/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php
+++ b/core/tests/Drupal/Tests/Component/Serialization/YamlTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Serialization;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php b/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php
index 83eb5d910aab..fa7f8ab14f06 100644
--- a/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php
+++ b/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Transliteration;
use Drupal\Component\Transliteration\PhpTransliteration;
diff --git a/core/tests/Drupal/Tests/Component/Utility/ArgumentsResolverTest.php b/core/tests/Drupal/Tests/Component/Utility/ArgumentsResolverTest.php
index 1a7f2f231da7..7b97b39c26bd 100644
--- a/core/tests/Drupal/Tests/Component/Utility/ArgumentsResolverTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/ArgumentsResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\ArgumentsResolver;
diff --git a/core/tests/Drupal/Tests/Component/Utility/BytesTest.php b/core/tests/Drupal/Tests/Component/Utility/BytesTest.php
index 6b10659f0556..b9294b6cae36 100644
--- a/core/tests/Drupal/Tests/Component/Utility/BytesTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/BytesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Bytes;
diff --git a/core/tests/Drupal/Tests/Component/Utility/ColorTest.php b/core/tests/Drupal/Tests/Component/Utility/ColorTest.php
index b0db7191b27e..d3b457e3f20d 100644
--- a/core/tests/Drupal/Tests/Component/Utility/ColorTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/ColorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Color;
diff --git a/core/tests/Drupal/Tests/Component/Utility/CryptTest.php b/core/tests/Drupal/Tests/Component/Utility/CryptTest.php
index b541e574e867..8894d9cf21cb 100644
--- a/core/tests/Drupal/Tests/Component/Utility/CryptTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/CryptTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Crypt;
diff --git a/core/tests/Drupal/Tests/Component/Utility/EmailValidatorTest.php b/core/tests/Drupal/Tests/Component/Utility/EmailValidatorTest.php
index 26318ebe380b..d5d4577baf57 100644
--- a/core/tests/Drupal/Tests/Component/Utility/EmailValidatorTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/EmailValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\EmailValidator;
diff --git a/core/tests/Drupal/Tests/Component/Utility/EnvironmentTest.php b/core/tests/Drupal/Tests/Component/Utility/EnvironmentTest.php
index 5d484b2903ca..10a5c2800a8a 100644
--- a/core/tests/Drupal/Tests/Component/Utility/EnvironmentTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/EnvironmentTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Environment;
diff --git a/core/tests/Drupal/Tests/Component/Utility/HtmlTest.php b/core/tests/Drupal/Tests/Component/Utility/HtmlTest.php
index ebe9668d7486..b309ea2c5a73 100644
--- a/core/tests/Drupal/Tests/Component/Utility/HtmlTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/HtmlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Render\MarkupInterface;
diff --git a/core/tests/Drupal/Tests/Component/Utility/ImageTest.php b/core/tests/Drupal/Tests/Component/Utility/ImageTest.php
index be3cdd75eb02..5860e9bea307 100644
--- a/core/tests/Drupal/Tests/Component/Utility/ImageTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/ImageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Image;
diff --git a/core/tests/Drupal/Tests/Component/Utility/NestedArrayTest.php b/core/tests/Drupal/Tests/Component/Utility/NestedArrayTest.php
index 35c0be969088..f6f687394823 100644
--- a/core/tests/Drupal/Tests/Component/Utility/NestedArrayTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/NestedArrayTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\NestedArray;
diff --git a/core/tests/Drupal/Tests/Component/Utility/NumberTest.php b/core/tests/Drupal/Tests/Component/Utility/NumberTest.php
index 0c5a5fa5072c..f719ec07a345 100644
--- a/core/tests/Drupal/Tests/Component/Utility/NumberTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/NumberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Number;
diff --git a/core/tests/Drupal/Tests/Component/Utility/RandomTest.php b/core/tests/Drupal/Tests/Component/Utility/RandomTest.php
index aaa75d57285e..fde2dbbb824b 100644
--- a/core/tests/Drupal/Tests/Component/Utility/RandomTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/RandomTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Random;
diff --git a/core/tests/Drupal/Tests/Component/Utility/RectangleTest.php b/core/tests/Drupal/Tests/Component/Utility/RectangleTest.php
index 6a4dc778bd35..47d1c0c7a0aa 100644
--- a/core/tests/Drupal/Tests/Component/Utility/RectangleTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/RectangleTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Rectangle;
diff --git a/core/tests/Drupal/Tests/Component/Utility/ReflectionTest.php b/core/tests/Drupal/Tests/Component/Utility/ReflectionTest.php
index 0a52a305f8e1..f82392b189e2 100644
--- a/core/tests/Drupal/Tests/Component/Utility/ReflectionTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/ReflectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Reflection;
diff --git a/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php b/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php
index 413991ff5e01..34b191184cdf 100644
--- a/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\SortArray;
diff --git a/core/tests/Drupal/Tests/Component/Utility/TimerTest.php b/core/tests/Drupal/Tests/Component/Utility/TimerTest.php
index a7cbf8732eb4..3c12f9a19df6 100644
--- a/core/tests/Drupal/Tests/Component/Utility/TimerTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/TimerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Timer;
diff --git a/core/tests/Drupal/Tests/Component/Utility/UnicodeTest.php b/core/tests/Drupal/Tests/Component/Utility/UnicodeTest.php
index fc52e7ba25f6..4c9d301337ff 100644
--- a/core/tests/Drupal/Tests/Component/Utility/UnicodeTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/UnicodeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Unicode;
diff --git a/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php b/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php
index 254058339fbd..da578931b3ec 100644
--- a/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/UrlHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\UrlHelper;
diff --git a/core/tests/Drupal/Tests/Component/Utility/UserAgentTest.php b/core/tests/Drupal/Tests/Component/Utility/UserAgentTest.php
index bb3e69d105aa..d19292c62de6 100644
--- a/core/tests/Drupal/Tests/Component/Utility/UserAgentTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/UserAgentTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Random;
diff --git a/core/tests/Drupal/Tests/Component/Utility/VariableTest.php b/core/tests/Drupal/Tests/Component/Utility/VariableTest.php
index 88c2b756cfcd..196f0db029ce 100644
--- a/core/tests/Drupal/Tests/Component/Utility/VariableTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/VariableTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Variable;
diff --git a/core/tests/Drupal/Tests/Component/Utility/XssTest.php b/core/tests/Drupal/Tests/Component/Utility/XssTest.php
index e076e977b392..2cf89d233e6a 100644
--- a/core/tests/Drupal/Tests/Component/Utility/XssTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/XssTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Utility;
use Drupal\Component\Utility\Html;
diff --git a/core/tests/Drupal/Tests/Component/Uuid/UuidTest.php b/core/tests/Drupal/Tests/Component/Uuid/UuidTest.php
index 1253803155c4..3170d7ce0757 100644
--- a/core/tests/Drupal/Tests/Component/Uuid/UuidTest.php
+++ b/core/tests/Drupal/Tests/Component/Uuid/UuidTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Uuid;
use Drupal\Component\Uuid\Uuid;
diff --git a/core/tests/Drupal/Tests/Component/Version/ConstraintTest.php b/core/tests/Drupal/Tests/Component/Version/ConstraintTest.php
index 292fd123e654..08edcaff96a0 100644
--- a/core/tests/Drupal/Tests/Component/Version/ConstraintTest.php
+++ b/core/tests/Drupal/Tests/Component/Version/ConstraintTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Component\Version;
use Drupal\Component\Version\Constraint;
diff --git a/core/tests/Drupal/Tests/Composer/ComposerTest.php b/core/tests/Drupal/Tests/Composer/ComposerTest.php
index 38b4d51a3605..552f25c2166a 100644
--- a/core/tests/Drupal/Tests/Composer/ComposerTest.php
+++ b/core/tests/Drupal/Tests/Composer/ComposerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer;
use Drupal\Composer\Composer;
diff --git a/core/tests/Drupal/Tests/Composer/Generator/BuilderTest.php b/core/tests/Drupal/Tests/Composer/Generator/BuilderTest.php
index 2f19ea8342b0..ca4b9701ef7a 100644
--- a/core/tests/Drupal/Tests/Composer/Generator/BuilderTest.php
+++ b/core/tests/Drupal/Tests/Composer/Generator/BuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Generator;
use Drupal\Composer\Generator\Builder\DrupalCoreRecommendedBuilder;
diff --git a/core/tests/Drupal/Tests/Composer/Generator/Fixtures.php b/core/tests/Drupal/Tests/Composer/Generator/Fixtures.php
index 5de506456f76..87e940507f2e 100644
--- a/core/tests/Drupal/Tests/Composer/Generator/Fixtures.php
+++ b/core/tests/Drupal/Tests/Composer/Generator/Fixtures.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Generator;
use Drupal\Composer\Generator\Util\DrupalCoreComposer;
diff --git a/core/tests/Drupal/Tests/Composer/Generator/MetapackageUpdateTest.php b/core/tests/Drupal/Tests/Composer/Generator/MetapackageUpdateTest.php
index 80d4f73799b4..664ffd7a73a9 100644
--- a/core/tests/Drupal/Tests/Composer/Generator/MetapackageUpdateTest.php
+++ b/core/tests/Drupal/Tests/Composer/Generator/MetapackageUpdateTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Generator;
use Drupal\Composer\Generator\Builder\DrupalCoreRecommendedBuilder;
diff --git a/core/tests/Drupal/Tests/Composer/Generator/OverlapWithTopLevelDependenciesTest.php b/core/tests/Drupal/Tests/Composer/Generator/OverlapWithTopLevelDependenciesTest.php
index fbbf6ac92666..69616f7fa63b 100644
--- a/core/tests/Drupal/Tests/Composer/Generator/OverlapWithTopLevelDependenciesTest.php
+++ b/core/tests/Drupal/Tests/Composer/Generator/OverlapWithTopLevelDependenciesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Generator;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/ProjectMessage/ConfigTest.php b/core/tests/Drupal/Tests/Composer/Plugin/ProjectMessage/ConfigTest.php
index ba7077fa9516..f1ed74713955 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/ProjectMessage/ConfigTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/ProjectMessage/ConfigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\ProjectMessage;
use Composer\Package\RootPackageInterface;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Fixtures.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Fixtures.php
index 5391087cf1c8..b25c5072a98b 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Fixtures.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Fixtures.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold;
use Composer\Console\Application;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php
index 4f831bdceea6..24fcdfce2982 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Functional;
use Composer\Util\Filesystem;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ManageGitIgnoreTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ManageGitIgnoreTest.php
index 29189438fc21..9e50d3c92bf0 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ManageGitIgnoreTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ManageGitIgnoreTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Functional;
use Composer\Util\Filesystem;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldTest.php
index 12868c0facea..8f3055f7ce2d 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Functional;
use Composer\Util\Filesystem;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldUpgradeTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldUpgradeTest.php
index 5102b6233fc8..20eb6d1e5a1b 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldUpgradeTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ScaffoldUpgradeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Functional;
use Composer\Util\Filesystem;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/AppendOpTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/AppendOpTest.php
index b113afa3220c..45806562416b 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/AppendOpTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/AppendOpTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Integration;
use Drupal\Composer\Plugin\Scaffold\Operations\AppendOp;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ReplaceOpTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ReplaceOpTest.php
index 7792034af7d3..00deb085684d 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ReplaceOpTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ReplaceOpTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Integration;
use Drupal\Composer\Plugin\Scaffold\Operations\ReplaceOp;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ScaffoldFileCollectionTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ScaffoldFileCollectionTest.php
index 69b8acfeb57a..2741a77d3389 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ScaffoldFileCollectionTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ScaffoldFileCollectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Integration;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/SkipOpTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/SkipOpTest.php
index 3f90f79bad1b..8fd239540bde 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/SkipOpTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/SkipOpTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold\Integration;
use Drupal\Composer\Plugin\Scaffold\Operations\SkipOp;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/ScaffoldTestResult.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/ScaffoldTestResult.php
index a82bcf4fbe36..668665400b22 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/ScaffoldTestResult.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/ScaffoldTestResult.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\Scaffold;
/**
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/ConfigTest.php b/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/ConfigTest.php
index 8b6001b6afed..bf154ca10fc5 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/ConfigTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/ConfigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\VendorHardening;
use Composer\Package\RootPackageInterface;
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/VendorHardeningPluginTest.php b/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/VendorHardeningPluginTest.php
index 30cc3bf10ef9..0a5fcee9c451 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/VendorHardeningPluginTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/VendorHardening/VendorHardeningPluginTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Composer\Plugin\VendorHardening;
use Composer\Composer;
diff --git a/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php b/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php
index 568a2b0820f7..74de788258ea 100644
--- a/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Access\AccessCheckInterface;
diff --git a/core/tests/Drupal/Tests/Core/Access/AccessResultForbiddenTest.php b/core/tests/Drupal/Tests/Core/Access/AccessResultForbiddenTest.php
index 0c42d2c191e3..cdf7a8c99f6d 100644
--- a/core/tests/Drupal/Tests/Core/Access/AccessResultForbiddenTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/AccessResultForbiddenTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Access\AccessResultForbidden;
diff --git a/core/tests/Drupal/Tests/Core/Access/AccessResultNeutralTest.php b/core/tests/Drupal/Tests/Core/Access/AccessResultNeutralTest.php
index 77b16e316736..2a0c4f3bc2e9 100644
--- a/core/tests/Drupal/Tests/Core/Access/AccessResultNeutralTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/AccessResultNeutralTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Access\AccessResultNeutral;
diff --git a/core/tests/Drupal/Tests/Core/Access/AccessResultTest.php b/core/tests/Drupal/Tests/Core/Access/AccessResultTest.php
index a82d3debb82d..ae25925f2943 100644
--- a/core/tests/Drupal/Tests/Core/Access/AccessResultTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/AccessResultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Access/CsrfAccessCheckTest.php b/core/tests/Drupal/Tests/Core/Access/CsrfAccessCheckTest.php
index d32912f16a88..b6678722ecca 100644
--- a/core/tests/Drupal/Tests/Core/Access/CsrfAccessCheckTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/CsrfAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Access/CsrfTokenGeneratorTest.php b/core/tests/Drupal/Tests/Core/Access/CsrfTokenGeneratorTest.php
index 118e5c041391..f81f9960b0dc 100644
--- a/core/tests/Drupal/Tests/Core/Access/CsrfTokenGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/CsrfTokenGeneratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Site\Settings;
diff --git a/core/tests/Drupal/Tests/Core/Access/CustomAccessCheckTest.php b/core/tests/Drupal/Tests/Core/Access/CustomAccessCheckTest.php
index 5f5a2e136881..c487ded7c97c 100644
--- a/core/tests/Drupal/Tests/Core/Access/CustomAccessCheckTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/CustomAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Access/DefaultAccessCheckTest.php b/core/tests/Drupal/Tests/Core/Access/DefaultAccessCheckTest.php
index addef57973f0..372b35159848 100644
--- a/core/tests/Drupal/Tests/Core/Access/DefaultAccessCheckTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/DefaultAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Access/RouteProcessorCsrfTest.php b/core/tests/Drupal/Tests/Core/Access/RouteProcessorCsrfTest.php
index acabe3cbbdce..6e356b7f244b 100644
--- a/core/tests/Drupal/Tests/Core/Access/RouteProcessorCsrfTest.php
+++ b/core/tests/Drupal/Tests/Core/Access/RouteProcessorCsrfTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Access;
use Drupal\Component\Utility\Crypt;
diff --git a/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php b/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
index 90169e978e4a..1f6b02bc188a 100644
--- a/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
+++ b/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Ajax;
use Drupal\Core\Ajax\AnnounceCommand;
diff --git a/core/tests/Drupal/Tests/Core/Ajax/AjaxResponseTest.php b/core/tests/Drupal/Tests/Core/Ajax/AjaxResponseTest.php
index 18543f8ec650..0033fd3b41ef 100644
--- a/core/tests/Drupal/Tests/Core/Ajax/AjaxResponseTest.php
+++ b/core/tests/Drupal/Tests/Core/Ajax/AjaxResponseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Ajax;
use Drupal\Core\Ajax\AjaxResponse;
diff --git a/core/tests/Drupal/Tests/Core/Ajax/OpenOffCanvasDialogCommandTest.php b/core/tests/Drupal/Tests/Core/Ajax/OpenOffCanvasDialogCommandTest.php
index a53e10f1ecc5..7564d77e5203 100644
--- a/core/tests/Drupal/Tests/Core/Ajax/OpenOffCanvasDialogCommandTest.php
+++ b/core/tests/Drupal/Tests/Core/Ajax/OpenOffCanvasDialogCommandTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Ajax;
use Drupal\Core\Ajax\OpenOffCanvasDialogCommand;
diff --git a/core/tests/Drupal/Tests/Core/Annotation/PluralTranslationTest.php b/core/tests/Drupal/Tests/Core/Annotation/PluralTranslationTest.php
index 98513ca93d0c..845e624685a9 100644
--- a/core/tests/Drupal/Tests/Core/Annotation/PluralTranslationTest.php
+++ b/core/tests/Drupal/Tests/Core/Annotation/PluralTranslationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Annotation;
use Drupal\Core\Annotation\PluralTranslation;
diff --git a/core/tests/Drupal/Tests/Core/Annotation/TranslationTest.php b/core/tests/Drupal/Tests/Core/Annotation/TranslationTest.php
index 8873b9b19ea1..2a6e79aa48ad 100644
--- a/core/tests/Drupal/Tests/Core/Annotation/TranslationTest.php
+++ b/core/tests/Drupal/Tests/Core/Annotation/TranslationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Annotation;
use Drupal\Core\Annotation\Translation;
diff --git a/core/tests/Drupal/Tests/Core/Asset/AssetResolverTest.php b/core/tests/Drupal/Tests/Core/Asset/AssetResolverTest.php
index 258716826308..07db8514ed3d 100644
--- a/core/tests/Drupal/Tests/Core/Asset/AssetResolverTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/AssetResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\AssetResolver;
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php
index 7d8345ea2cdb..34adf3fe4974 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\CssCollectionGrouper;
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerLazyUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerLazyUnitTest.php
index d1d5364f4fff..561807d20eb4 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerLazyUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerLazyUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Component\Datetime\TimeInterface;
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerUnitTest.php
index 9fc8e0309cdb..195afc7daddd 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssCollectionOptimizerUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\AssetCollectionGrouperInterface;
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php
index 2458ed307305..bf3071056b9e 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssCollectionRendererUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\AssetQueryStringInterface;
diff --git a/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
index e4833ec41a2b..318f2c62b0e3 100644
--- a/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/CssOptimizerUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\CssOptimizer;
diff --git a/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php b/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php
index cc2596566c77..d698dcda1706 100644
--- a/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/JsOptimizerUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\JsOptimizer;
diff --git a/core/tests/Drupal/Tests/Core/Asset/LibrariesDirectoryFileFinderTest.php b/core/tests/Drupal/Tests/Core/Asset/LibrariesDirectoryFileFinderTest.php
index dab1ef3db07c..bf3a7f02d83f 100644
--- a/core/tests/Drupal/Tests/Core/Asset/LibrariesDirectoryFileFinderTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/LibrariesDirectoryFileFinderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\LibrariesDirectoryFileFinder;
diff --git a/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php b/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php
index a8425ac20783..40327713c063 100644
--- a/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\LibraryDependencyResolver;
diff --git a/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryCollectorTest.php b/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryCollectorTest.php
index fd96a0783b15..5528ca294fb6 100644
--- a/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryCollectorTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryCollectorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\LibraryDiscoveryCollector;
diff --git a/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryParserTest.php b/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryParserTest.php
index a05a5a0e4cff..ddc83a815aed 100644
--- a/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryParserTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryParserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\Exception\IncompleteLibraryDefinitionException;
diff --git a/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryTest.php
index b53d6a72b928..72bc4add577d 100644
--- a/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/LibraryDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Asset;
use Drupal\Core\Asset\LibraryDiscovery;
diff --git a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationCollectorTest.php b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationCollectorTest.php
index 00cec2a6209f..9f19efe1113e 100644
--- a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationCollectorTest.php
+++ b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationCollectorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Authentication;
use Drupal\Core\Authentication\AuthenticationCollector;
diff --git a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
index f1964a2d2a5f..d67b3309584c 100644
--- a/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Authentication/AuthenticationManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Authentication;
use Drupal\Core\Authentication\AuthenticationCollector;
diff --git a/core/tests/Drupal/Tests/Core/Batch/BatchBuilderTest.php b/core/tests/Drupal/Tests/Core/Batch/BatchBuilderTest.php
index 64c0963004c2..5971692a116b 100644
--- a/core/tests/Drupal/Tests/Core/Batch/BatchBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/Batch/BatchBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Batch;
use Drupal\Core\Batch\BatchBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Batch/PercentagesTest.php b/core/tests/Drupal/Tests/Core/Batch/PercentagesTest.php
index 382ae29da804..128f4d5da8dc 100644
--- a/core/tests/Drupal/Tests/Core/Batch/PercentagesTest.php
+++ b/core/tests/Drupal/Tests/Core/Batch/PercentagesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Batch;
use Drupal\Core\Batch\Percentage;
diff --git a/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php b/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php
index 21ada5c8d0ac..0ac1f6c775cd 100644
--- a/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Block/BlockBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Block;
use Drupal\block_test\Plugin\Block\TestBlockInstantiation;
diff --git a/core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php b/core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php
index 5ce1b499fc3c..dc993a5faadd 100644
--- a/core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Block;
use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
diff --git a/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbManagerTest.php b/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbManagerTest.php
index b6317841fea7..579a7168636f 100644
--- a/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Breadcrumb;
use Drupal\Core\Breadcrumb\Breadcrumb;
diff --git a/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbTest.php b/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbTest.php
index f578301941c8..c0f91db54a61 100644
--- a/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbTest.php
+++ b/core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Breadcrumb;
use Drupal\Core\Breadcrumb\Breadcrumb;
diff --git a/core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php b/core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php
index 9be88bbcb1ab..6dba9c583293 100644
--- a/core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/BackendChainImplementationUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\BackendChain;
diff --git a/core/tests/Drupal/Tests/Core/Cache/CacheCollectorHelper.php b/core/tests/Drupal/Tests/Core/Cache/CacheCollectorHelper.php
index a44e8d4acd92..aecbfee826b7 100644
--- a/core/tests/Drupal/Tests/Core/Cache/CacheCollectorHelper.php
+++ b/core/tests/Drupal/Tests/Core/Cache/CacheCollectorHelper.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\CacheCollector;
diff --git a/core/tests/Drupal/Tests/Core/Cache/CacheCollectorTest.php b/core/tests/Drupal/Tests/Core/Cache/CacheCollectorTest.php
index d345763c6ea3..627cef0feff4 100644
--- a/core/tests/Drupal/Tests/Core/Cache/CacheCollectorTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/CacheCollectorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Cache/CacheFactoryTest.php b/core/tests/Drupal/Tests/Core/Cache/CacheFactoryTest.php
index c67dc843dd58..8c555465c759 100644
--- a/core/tests/Drupal/Tests/Core/Cache/CacheFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/CacheFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Cache/CacheTagsInvalidatorTest.php b/core/tests/Drupal/Tests/Core/Cache/CacheTagsInvalidatorTest.php
index 02f6731e94ff..20a5aef43c0b 100644
--- a/core/tests/Drupal/Tests/Core/Cache/CacheTagsInvalidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/CacheTagsInvalidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\CacheTagsInvalidator;
diff --git a/core/tests/Drupal/Tests/Core/Cache/CacheTest.php b/core/tests/Drupal/Tests/Core/Cache/CacheTest.php
index 7b5b3f56e3d3..71090f46c24d 100644
--- a/core/tests/Drupal/Tests/Core/Cache/CacheTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/CacheTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Cache/CacheableMetadataTest.php b/core/tests/Drupal/Tests/Core/Cache/CacheableMetadataTest.php
index ff12edabe678..d0b4c2f65361 100644
--- a/core/tests/Drupal/Tests/Core/Cache/CacheableMetadataTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/CacheableMetadataTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendFactoryTest.php b/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendFactoryTest.php
index 837c0f2a386f..6b14a97c3a82 100644
--- a/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Component\DependencyInjection\ContainerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendTest.php b/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendTest.php
index ac5fb40a3b9e..560a1a7d97e6 100644
--- a/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\ChainedFastBackend;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/CacheContextsManagerTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/CacheContextsManagerTest.php
index 36b23bf6fc90..562eda98897a 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/CacheContextsManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/CacheContextsManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/CookieCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/CookieCacheContextTest.php
index 71959b03d055..3dee9fc94757 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/CookieCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/CookieCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\CookiesCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/HeadersCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/HeadersCacheContextTest.php
index 8f69e21740c9..1a946b5760a8 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/HeadersCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/HeadersCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\HeadersCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/IsFrontPathCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/IsFrontPathCacheContextTest.php
index 84fe9b1b33d5..ef732eb9cec6 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/IsFrontPathCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/IsFrontPathCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\IsFrontPathCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/PathParentCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/PathParentCacheContextTest.php
index 69120e27f551..440e0e5c07d4 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/PathParentCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/PathParentCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\PathParentCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/ProtocolVersionCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/ProtocolVersionCacheContextTest.php
index 530565cfa332..72f1de4094a1 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/ProtocolVersionCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/ProtocolVersionCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\ProtocolVersionCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/QueryArgsCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/QueryArgsCacheContextTest.php
index 5c30a92fbb76..ae8009f24f2b 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/QueryArgsCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/QueryArgsCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\QueryArgsCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php
index e591f4f13a0c..87993d50f98f 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/SessionCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\SessionCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/Context/UserRolesCacheContextTest.php b/core/tests/Drupal/Tests/Core/Cache/Context/UserRolesCacheContextTest.php
index a9c010410887..6b889c07105c 100644
--- a/core/tests/Drupal/Tests/Core/Cache/Context/UserRolesCacheContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/Context/UserRolesCacheContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache\Context;
use Drupal\Core\Cache\Context\UserRolesCacheContext;
diff --git a/core/tests/Drupal/Tests/Core/Cache/DatabaseBackendFactoryTest.php b/core/tests/Drupal/Tests/Core/Cache/DatabaseBackendFactoryTest.php
index 9d5ac4bdf924..bf94caa009ea 100644
--- a/core/tests/Drupal/Tests/Core/Cache/DatabaseBackendFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/DatabaseBackendFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\CacheTagsChecksumInterface;
diff --git a/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php b/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php
index bf79f70903db..e5067a697d8e 100644
--- a/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\NullBackend;
diff --git a/core/tests/Drupal/Tests/Core/Cache/VariationCacheTest.php b/core/tests/Drupal/Tests/Core/Cache/VariationCacheTest.php
index 60f50db41554..a63a73637851 100644
--- a/core/tests/Drupal/Tests/Core/Cache/VariationCacheTest.php
+++ b/core/tests/Drupal/Tests/Core/Cache/VariationCacheTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cache;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/tests/Drupal/Tests/Core/Command/GenerateThemeTest.php b/core/tests/Drupal/Tests/Core/Command/GenerateThemeTest.php
index a64881c051c5..5a401044e97d 100644
--- a/core/tests/Drupal/Tests/Core/Command/GenerateThemeTest.php
+++ b/core/tests/Drupal/Tests/Core/Command/GenerateThemeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Command;
use Drupal\BuildTests\QuickStart\QuickStartTestBase;
diff --git a/core/tests/Drupal/Tests/Core/Command/QuickStartTest.php b/core/tests/Drupal/Tests/Core/Command/QuickStartTest.php
index ff6c3c5462ac..735624438ae7 100644
--- a/core/tests/Drupal/Tests/Core/Command/QuickStartTest.php
+++ b/core/tests/Drupal/Tests/Core/Command/QuickStartTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Command;
use Drupal\sqlite\Driver\Database\sqlite\Install\Tasks;
diff --git a/core/tests/Drupal/Tests/Core/Common/AttributesTest.php b/core/tests/Drupal/Tests/Core/Common/AttributesTest.php
index e96704038927..f2fd29e16dc0 100644
--- a/core/tests/Drupal/Tests/Core/Common/AttributesTest.php
+++ b/core/tests/Drupal/Tests/Core/Common/AttributesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Common;
use Drupal\Core\Template\Attribute;
diff --git a/core/tests/Drupal/Tests/Core/Common/DiffArrayTest.php b/core/tests/Drupal/Tests/Core/Common/DiffArrayTest.php
index 8c963af1ca62..3394fca907f6 100644
--- a/core/tests/Drupal/Tests/Core/Common/DiffArrayTest.php
+++ b/core/tests/Drupal/Tests/Core/Common/DiffArrayTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Common;
use Drupal\Component\Utility\DiffArray;
diff --git a/core/tests/Drupal/Tests/Core/Common/TagsTest.php b/core/tests/Drupal/Tests/Core/Common/TagsTest.php
index a0ca0ac7c676..57511048acf8 100644
--- a/core/tests/Drupal/Tests/Core/Common/TagsTest.php
+++ b/core/tests/Drupal/Tests/Core/Common/TagsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Common;
use Drupal\Component\Utility\Tags;
diff --git a/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php b/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php
index 82e1c6d551ec..8adee3fc1b0a 100644
--- a/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Condition/ConditionAccessResolverTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Condition;
use Drupal\Component\Plugin\Exception\ContextException;
diff --git a/core/tests/Drupal/Tests/Core/Config/CachedStorageTest.php b/core/tests/Drupal/Tests/Core/Config/CachedStorageTest.php
index a33c05187e56..32bb2b0fde03 100644
--- a/core/tests/Drupal/Tests/Core/Config/CachedStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/CachedStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Config/ConfigDependencyManagerTest.php b/core/tests/Drupal/Tests/Core/Config/ConfigDependencyManagerTest.php
index bd1af594a2bc..92a6342c262f 100644
--- a/core/tests/Drupal/Tests/Core/Config/ConfigDependencyManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ConfigDependencyManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\Entity\ConfigDependencyManager;
diff --git a/core/tests/Drupal/Tests/Core/Config/ConfigFactoryOverrideBaseTest.php b/core/tests/Drupal/Tests/Core/Config/ConfigFactoryOverrideBaseTest.php
index f81352f712db..d4ba1b1a0636 100644
--- a/core/tests/Drupal/Tests/Core/Config/ConfigFactoryOverrideBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ConfigFactoryOverrideBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\ConfigCollectionInfo;
diff --git a/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php b/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php
index ce57d2cbe4d1..ae0944489eba 100644
--- a/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\Config;
diff --git a/core/tests/Drupal/Tests/Core/Config/ConfigTest.php b/core/tests/Drupal/Tests/Core/Config/ConfigTest.php
index c75964465c13..1bdc3cbd28af 100644
--- a/core/tests/Drupal/Tests/Core/Config/ConfigTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ConfigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigDependencyManagerTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigDependencyManagerTest.php
index 9f058d56f361..1bf92c0ec495 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigDependencyManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigDependencyManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityBaseUnitTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityBaseUnitTest.php
index 2a50bd6882f1..c1dac0ec459d 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityBaseUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityBaseUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity;
use Drupal\Component\Plugin\PluginManagerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityDependencyTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityDependencyTest.php
index f689db48ab26..d41ac6d92c3a 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityDependencyTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityDependencyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityStorageTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityStorageTest.php
index 65c70288f965..77ab459be41b 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity;
use Drupal\Component\Uuid\UuidInterface;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php
index 4edb98e27ed6..09b47a11c3dc 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/ConfigEntityTypeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity;
use Drupal\Core\Config\TypedConfigManagerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayBaseTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayBaseTest.php
index ca315415fc3b..13163a10828e 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayModeBaseUnitTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayModeBaseUnitTest.php
index c3a9c10b836a..bc44483ed202 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayModeBaseUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/EntityDisplayModeBaseUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/Fixtures/ConfigEntityBaseWithPluginCollections.php b/core/tests/Drupal/Tests/Core/Config/Entity/Fixtures/ConfigEntityBaseWithPluginCollections.php
index 6dc9d9817e69..4013130c37dd 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/Fixtures/ConfigEntityBaseWithPluginCollections.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/Fixtures/ConfigEntityBaseWithPluginCollections.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity\Fixtures;
use Drupal\Core\Config\Entity\ConfigEntityBase;
diff --git a/core/tests/Drupal/Tests/Core/Config/Entity/Query/QueryFactoryTest.php b/core/tests/Drupal/Tests/Core/Config/Entity/Query/QueryFactoryTest.php
index e54d3c6959e4..9bab605732fc 100644
--- a/core/tests/Drupal/Tests/Core/Config/Entity/Query/QueryFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/Entity/Query/QueryFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config\Entity\Query;
use Drupal\Core\Config\Config;
diff --git a/core/tests/Drupal/Tests/Core/Config/ExtensionInstallStorageTest.php b/core/tests/Drupal/Tests/Core/Config/ExtensionInstallStorageTest.php
index 86c217bd1ecd..4444073b0873 100644
--- a/core/tests/Drupal/Tests/Core/Config/ExtensionInstallStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ExtensionInstallStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\ExtensionInstallStorage;
diff --git a/core/tests/Drupal/Tests/Core/Config/ImmutableConfigTest.php b/core/tests/Drupal/Tests/Core/Config/ImmutableConfigTest.php
index 25a75d3428df..29375c3e5254 100644
--- a/core/tests/Drupal/Tests/Core/Config/ImmutableConfigTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ImmutableConfigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\ImmutableConfig;
diff --git a/core/tests/Drupal/Tests/Core/Config/NullStorageTest.php b/core/tests/Drupal/Tests/Core/Config/NullStorageTest.php
index 9cb15a81f5ba..1a8f92287879 100644
--- a/core/tests/Drupal/Tests/Core/Config/NullStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/NullStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\NullStorage;
diff --git a/core/tests/Drupal/Tests/Core/Config/ReadOnlyStorageTest.php b/core/tests/Drupal/Tests/Core/Config/ReadOnlyStorageTest.php
index 59a170488db4..69855da4c9c3 100644
--- a/core/tests/Drupal/Tests/Core/Config/ReadOnlyStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ReadOnlyStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\MemoryStorage;
diff --git a/core/tests/Drupal/Tests/Core/Config/StorageComparerTest.php b/core/tests/Drupal/Tests/Core/Config/StorageComparerTest.php
index 64fce17b2e0e..51131d7284b5 100644
--- a/core/tests/Drupal/Tests/Core/Config/StorageComparerTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/StorageComparerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Component\Uuid\Php;
diff --git a/core/tests/Drupal/Tests/Core/Config/StorageCopyTraitTest.php b/core/tests/Drupal/Tests/Core/Config/StorageCopyTraitTest.php
index d3710b278df4..9b13f9328a53 100644
--- a/core/tests/Drupal/Tests/Core/Config/StorageCopyTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/StorageCopyTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Config;
use Drupal\Core\Config\MemoryStorage;
diff --git a/core/tests/Drupal/Tests/Core/Controller/AjaxRendererTest.php b/core/tests/Drupal/Tests/Core/Controller/AjaxRendererTest.php
index e9d9c00e0c1e..a1d4e38e27fd 100644
--- a/core/tests/Drupal/Tests/Core/Controller/AjaxRendererTest.php
+++ b/core/tests/Drupal/Tests/Core/Controller/AjaxRendererTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Controller;
use Drupal\Core\Render\MainContent\AjaxRenderer;
diff --git a/core/tests/Drupal/Tests/Core/Controller/ControllerBaseTest.php b/core/tests/Drupal/Tests/Core/Controller/ControllerBaseTest.php
index 5044789637c5..0ddb46e121a1 100644
--- a/core/tests/Drupal/Tests/Core/Controller/ControllerBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Controller/ControllerBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Controller;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Controller/ControllerResolverTest.php b/core/tests/Drupal/Tests/Core/Controller/ControllerResolverTest.php
index 2c0b853e51ab..3bb192f08ef9 100644
--- a/core/tests/Drupal/Tests/Core/Controller/ControllerResolverTest.php
+++ b/core/tests/Drupal/Tests/Core/Controller/ControllerResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Controller;
use Drupal\Core\Controller\ControllerResolver;
diff --git a/core/tests/Drupal/Tests/Core/Controller/TestController.php b/core/tests/Drupal/Tests/Core/Controller/TestController.php
index 976071077e60..3628df300ccd 100644
--- a/core/tests/Drupal/Tests/Core/Controller/TestController.php
+++ b/core/tests/Drupal/Tests/Core/Controller/TestController.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Controller;
use Symfony\Component\HttpFoundation\Response;
diff --git a/core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php b/core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php
index 2716e4e45ea3..73e3fe338b99 100644
--- a/core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php
+++ b/core/tests/Drupal/Tests/Core/Controller/TitleResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Controller;
use Drupal\Core\Controller\TitleResolver;
diff --git a/core/tests/Drupal/Tests/Core/Cron/CronSuspendQueueDelayTest.php b/core/tests/Drupal/Tests/Core/Cron/CronSuspendQueueDelayTest.php
index 6ac8367a995d..dc8af98f93a2 100644
--- a/core/tests/Drupal/Tests/Core/Cron/CronSuspendQueueDelayTest.php
+++ b/core/tests/Drupal/Tests/Core/Cron/CronSuspendQueueDelayTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Cron;
use Drupal\Component\Datetime\TimeInterface;
diff --git a/core/tests/Drupal/Tests/Core/CronTest.php b/core/tests/Drupal/Tests/Core/CronTest.php
index bc968777a539..09d3d5325b80 100644
--- a/core/tests/Drupal/Tests/Core/CronTest.php
+++ b/core/tests/Drupal/Tests/Core/CronTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core;
use Drupal\Core\Config\ConfigFactoryInterface;
diff --git a/core/tests/Drupal/Tests/Core/Database/ConditionTest.php b/core/tests/Drupal/Tests/Core/Database/ConditionTest.php
index e51d5791e1a2..4e6908694bc1 100644
--- a/core/tests/Drupal/Tests/Core/Database/ConditionTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/ConditionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Drupal\Core\Database\Connection;
diff --git a/core/tests/Drupal/Tests/Core/Database/ConnectionTest.php b/core/tests/Drupal/Tests/Core/Database/ConnectionTest.php
index b23d88b99c26..3cb735405bd8 100644
--- a/core/tests/Drupal/Tests/Core/Database/ConnectionTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/ConnectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Core/Database/DatabaseEventsTest.php b/core/tests/Drupal/Tests/Core/Database/DatabaseEventsTest.php
index 8205f338e6ac..433a72c49cab 100644
--- a/core/tests/Drupal/Tests/Core/Database/DatabaseEventsTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/DatabaseEventsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Drupal\Core\Database\Connection;
diff --git a/core/tests/Drupal/Tests/Core/Database/DatabaseTest.php b/core/tests/Drupal/Tests/Core/Database/DatabaseTest.php
index 11ac1ae14423..38f518fc9f2c 100644
--- a/core/tests/Drupal/Tests/Core/Database/DatabaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/DatabaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Core/Database/DriverModuleMissingDependenciesTest.php b/core/tests/Drupal/Tests/Core/Database/DriverModuleMissingDependenciesTest.php
index 7926234ac029..0e7f3e707815 100644
--- a/core/tests/Drupal/Tests/Core/Database/DriverModuleMissingDependenciesTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/DriverModuleMissingDependenciesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Drupal\Core\Cache\NullBackend;
diff --git a/core/tests/Drupal/Tests/Core/Database/InstallerObjectTest.php b/core/tests/Drupal/Tests/Core/Database/InstallerObjectTest.php
index dbdc0ae338c4..460fe1129372 100644
--- a/core/tests/Drupal/Tests/Core/Database/InstallerObjectTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/InstallerObjectTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Core/Database/LogTest.php b/core/tests/Drupal/Tests/Core/Database/LogTest.php
index 7d5e5fec71a6..5d592cd48b81 100644
--- a/core/tests/Drupal/Tests/Core/Database/LogTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/LogTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Drupal\Core\Database\Database;
@@ -37,7 +39,7 @@ public function testContribDriverLog() {
$result = (new StubConnection($pdo, []))->testLogCaller();
$this->assertSame([
'file' => __FILE__,
- 'line' => 37,
+ 'line' => 39,
'function' => 'testContribDriverLog',
'class' => 'Drupal\Tests\Core\Database\LogTest',
'type' => '->',
@@ -51,7 +53,7 @@ public function testContribDriverLog() {
$result = (new Log())->findCaller();
$this->assertSame([
'file' => __FILE__,
- 'line' => 51,
+ 'line' => 53,
'function' => 'testContribDriverLog',
'class' => 'Drupal\Tests\Core\Database\LogTest',
'type' => '->',
diff --git a/core/tests/Drupal/Tests/Core/Database/OrderByTest.php b/core/tests/Drupal/Tests/Core/Database/OrderByTest.php
index e2ee06a24cf0..f6b21a04c24c 100644
--- a/core/tests/Drupal/Tests/Core/Database/OrderByTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/OrderByTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Drupal\Core\Database\Query\Select;
diff --git a/core/tests/Drupal/Tests/Core/Database/RowCountExceptionTest.php b/core/tests/Drupal/Tests/Core/Database/RowCountExceptionTest.php
index 6d74d44908a7..9610b5249892 100644
--- a/core/tests/Drupal/Tests/Core/Database/RowCountExceptionTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/RowCountExceptionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Drupal\Core\Database\RowCountException;
diff --git a/core/tests/Drupal/Tests/Core/Database/Stub/Driver/Schema.php b/core/tests/Drupal/Tests/Core/Database/Stub/Driver/Schema.php
index 41c7c6e4df49..b78383d6a120 100644
--- a/core/tests/Drupal/Tests/Core/Database/Stub/Driver/Schema.php
+++ b/core/tests/Drupal/Tests/Core/Database/Stub/Driver/Schema.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database\Stub\Driver;
/**
diff --git a/core/tests/Drupal/Tests/Core/Database/Stub/Select.php b/core/tests/Drupal/Tests/Core/Database/Stub/Select.php
index a8dcd399d33d..c004d7f0a726 100644
--- a/core/tests/Drupal/Tests/Core/Database/Stub/Select.php
+++ b/core/tests/Drupal/Tests/Core/Database/Stub/Select.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database\Stub;
use Drupal\Core\Database\Query\Select as QuerySelect;
diff --git a/core/tests/Drupal/Tests/Core/Database/Stub/StubCondition.php b/core/tests/Drupal/Tests/Core/Database/Stub/StubCondition.php
index 3b7b79a69973..abe543fd1e75 100644
--- a/core/tests/Drupal/Tests/Core/Database/Stub/StubCondition.php
+++ b/core/tests/Drupal/Tests/Core/Database/Stub/StubCondition.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database\Stub;
use Drupal\Core\Database\Query\Condition;
diff --git a/core/tests/Drupal/Tests/Core/Database/Stub/StubConnection.php b/core/tests/Drupal/Tests/Core/Database/Stub/StubConnection.php
index 2ce07e0646b8..fbc02bdb8809 100644
--- a/core/tests/Drupal/Tests/Core/Database/Stub/StubConnection.php
+++ b/core/tests/Drupal/Tests/Core/Database/Stub/StubConnection.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database\Stub;
use Drupal\Core\Database\Connection;
diff --git a/core/tests/Drupal/Tests/Core/Database/Stub/StubPDO.php b/core/tests/Drupal/Tests/Core/Database/Stub/StubPDO.php
index 74737b073bf9..eb4010fe3164 100644
--- a/core/tests/Drupal/Tests/Core/Database/Stub/StubPDO.php
+++ b/core/tests/Drupal/Tests/Core/Database/Stub/StubPDO.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database\Stub;
/**
diff --git a/core/tests/Drupal/Tests/Core/Database/Stub/StubUpsert.php b/core/tests/Drupal/Tests/Core/Database/Stub/StubUpsert.php
index 34b28e939815..2626c11c3741 100644
--- a/core/tests/Drupal/Tests/Core/Database/Stub/StubUpsert.php
+++ b/core/tests/Drupal/Tests/Core/Database/Stub/StubUpsert.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database\Stub;
use Drupal\Core\Database\Query\Upsert;
diff --git a/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php b/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php
index 9a93304e7841..6f87304b590b 100644
--- a/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Database;
use Drupal\Core\Database\Database;
diff --git a/core/tests/Drupal/Tests/Core/Database/fixtures/core/modules/driver_missing_dependency_test/src/Driver/Database/MissingDependency/Install/Tasks.php b/core/tests/Drupal/Tests/Core/Database/fixtures/core/modules/driver_missing_dependency_test/src/Driver/Database/MissingDependency/Install/Tasks.php
index 43eeee5fa4b6..4d3476665614 100644
--- a/core/tests/Drupal/Tests/Core/Database/fixtures/core/modules/driver_missing_dependency_test/src/Driver/Database/MissingDependency/Install/Tasks.php
+++ b/core/tests/Drupal/Tests/Core/Database/fixtures/core/modules/driver_missing_dependency_test/src/Driver/Database/MissingDependency/Install/Tasks.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\driver_missing_dependency_test\Driver\Database\MissingDependency\Install;
use Drupal\Core\Database\Install\Tasks as CoreTasks;
diff --git a/core/tests/Drupal/Tests/Core/Datetime/DateHelperTest.php b/core/tests/Drupal/Tests/Core/Datetime/DateHelperTest.php
index 9c1bd69b05bd..e9295ad379bd 100644
--- a/core/tests/Drupal/Tests/Core/Datetime/DateHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Datetime/DateHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Datetime;
use Drupal\Core\Datetime\DateHelper;
diff --git a/core/tests/Drupal/Tests/Core/Datetime/DateTest.php b/core/tests/Drupal/Tests/Core/Datetime/DateTest.php
index b73fb66ccf8e..c9010bdcd7c7 100644
--- a/core/tests/Drupal/Tests/Core/Datetime/DateTest.php
+++ b/core/tests/Drupal/Tests/Core/Datetime/DateTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Datetime;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/tests/Drupal/Tests/Core/Datetime/DrupalDateTimeTest.php b/core/tests/Drupal/Tests/Core/Datetime/DrupalDateTimeTest.php
index e7debc17d6f2..fc0213793f13 100644
--- a/core/tests/Drupal/Tests/Core/Datetime/DrupalDateTimeTest.php
+++ b/core/tests/Drupal/Tests/Core/Datetime/DrupalDateTimeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Datetime;
use Drupal\Core\Datetime\DrupalDateTime;
diff --git a/core/tests/Drupal/Tests/Core/Datetime/TimeZoneFormHelperTest.php b/core/tests/Drupal/Tests/Core/Datetime/TimeZoneFormHelperTest.php
index 72a0f74ae203..92ce77bc5d6e 100644
--- a/core/tests/Drupal/Tests/Core/Datetime/TimeZoneFormHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Datetime/TimeZoneFormHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Datetime;
use Drupal\Core\Datetime\TimeZoneFormHelper;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/AuthenticationProviderPassTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/AuthenticationProviderPassTest.php
index 658d6e2eaa21..7e106cefcc65 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/AuthenticationProviderPassTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/AuthenticationProviderPassTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection\Compiler;
use Drupal\Core\DependencyInjection\Compiler\AuthenticationProviderPass;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/BackendCompilerPassTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/BackendCompilerPassTest.php
index bd99c0dd1a29..51064a317b86 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/BackendCompilerPassTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/BackendCompilerPassTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection\Compiler;
use Drupal\Core\DependencyInjection\Compiler\BackendCompilerPass;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/ProxyServicesPassTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/ProxyServicesPassTest.php
index b6a94b8c063e..5ff1c829b0bd 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/ProxyServicesPassTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/ProxyServicesPassTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection\Compiler;
use Drupal\Core\DependencyInjection\Compiler\ProxyServicesPass;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/StackedKernelPassTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/StackedKernelPassTest.php
index bec9f692334e..27ee74a64500 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/StackedKernelPassTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/StackedKernelPassTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection\Compiler;
use Drupal\Core\DependencyInjection\Compiler\StackedKernelPass;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/TaggedHandlersPassTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/TaggedHandlersPassTest.php
index 364158004816..ed07b2fb7cee 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/TaggedHandlersPassTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/TaggedHandlersPassTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection\Compiler;
use Drupal\Core\DependencyInjection\Compiler\TaggedHandlersPass;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php
index 3fd75cadfc41..32f4c3cfaf80 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerTest.php
index 2d7bd078b16c..426d392bf304 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/ContainerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection;
use Drupal\Core\DependencyInjection\Container;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
index bfba22cddc08..d37088fba0da 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/DependencySerializationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection;
use Drupal\Component\DependencyInjection\ReverseContainer;
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BarClass.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BarClass.php
index 4fc0a6487f4a..1399ac131372 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BarClass.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BarClass.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection\Fixture;
/**
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BazClass.php b/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BazClass.php
index 1ffe9ac5b471..b4f836401952 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BazClass.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/Fixture/BazClass.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection\Fixture;
/**
diff --git a/core/tests/Drupal/Tests/Core/DependencyInjection/YamlFileLoaderTest.php b/core/tests/Drupal/Tests/Core/DependencyInjection/YamlFileLoaderTest.php
index 6462a473f00b..7f55c404fb23 100644
--- a/core/tests/Drupal/Tests/Core/DependencyInjection/YamlFileLoaderTest.php
+++ b/core/tests/Drupal/Tests/Core/DependencyInjection/YamlFileLoaderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DependencyInjection;
use Drupal\Component\FileCache\FileCacheFactory;
diff --git a/core/tests/Drupal/Tests/Core/Discovery/YamlDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Discovery/YamlDiscoveryTest.php
index 34a76528b5dd..b5094f067596 100644
--- a/core/tests/Drupal/Tests/Core/Discovery/YamlDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Discovery/YamlDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Discovery;
use Drupal\Component\FileCache\FileCacheFactory;
diff --git a/core/tests/Drupal/Tests/Core/Display/DisplayVariantTest.php b/core/tests/Drupal/Tests/Core/Display/DisplayVariantTest.php
index b4fa731ae399..71a39d0cfb90 100644
--- a/core/tests/Drupal/Tests/Core/Display/DisplayVariantTest.php
+++ b/core/tests/Drupal/Tests/Core/Display/DisplayVariantTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Display;
use Drupal\Core\Form\FormState;
diff --git a/core/tests/Drupal/Tests/Core/DrupalKernel/DiscoverServiceProvidersTest.php b/core/tests/Drupal/Tests/Core/DrupalKernel/DiscoverServiceProvidersTest.php
index 5a6e6c924ba5..2763f40b530e 100644
--- a/core/tests/Drupal/Tests/Core/DrupalKernel/DiscoverServiceProvidersTest.php
+++ b/core/tests/Drupal/Tests/Core/DrupalKernel/DiscoverServiceProvidersTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DrupalKernel;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelTest.php b/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelTest.php
index cb04af7ff544..a6b05c73c461 100644
--- a/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelTest.php
+++ b/core/tests/Drupal/Tests/Core/DrupalKernel/DrupalKernelTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DrupalKernel;
use Drupal\Core\DrupalKernel;
diff --git a/core/tests/Drupal/Tests/Core/DrupalKernel/ValidateHostnameTest.php b/core/tests/Drupal/Tests/Core/DrupalKernel/ValidateHostnameTest.php
index 2010f49ba4d1..d48adaaf1039 100644
--- a/core/tests/Drupal/Tests/Core/DrupalKernel/ValidateHostnameTest.php
+++ b/core/tests/Drupal/Tests/Core/DrupalKernel/ValidateHostnameTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\DrupalKernel;
use Drupal\Core\DrupalKernel;
diff --git a/core/tests/Drupal/Tests/Core/DrupalTest.php b/core/tests/Drupal/Tests/Core/DrupalTest.php
index 38c59dfa0824..49c6226f6aee 100644
--- a/core/tests/Drupal/Tests/Core/DrupalTest.php
+++ b/core/tests/Drupal/Tests/Core/DrupalTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core;
use Drupal\Core\DependencyInjection\ClassResolverInterface;
diff --git a/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php b/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php
index 029f9f12ca90..d5a691dd951b 100644
--- a/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php
+++ b/core/tests/Drupal/Tests/Core/Enhancer/EntityRevisionRouteEnhancerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Enhancer;
use Drupal\Core\Entity\EntityInterface;
diff --git a/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php b/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php
index ec9224eb3f4a..261a93590a61 100644
--- a/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php
+++ b/core/tests/Drupal/Tests/Core/Enhancer/ParamConversionEnhancerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Enhancer;
use Drupal\Core\Routing\Enhancer\ParamConversionEnhancer;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Access/EntityFormDisplayAccessControlHandlerTest.php b/core/tests/Drupal/Tests/Core/Entity/Access/EntityFormDisplayAccessControlHandlerTest.php
index 23ec2b8607f8..df0e46e0d9db 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Access/EntityFormDisplayAccessControlHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Access/EntityFormDisplayAccessControlHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Access;
use Drupal\Component\Plugin\PluginManagerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Access/EntityViewDisplayAccessControlHandlerTest.php b/core/tests/Drupal/Tests/Core/Entity/Access/EntityViewDisplayAccessControlHandlerTest.php
index becbb3c26239..c0c695451af9 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Access/EntityViewDisplayAccessControlHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Access/EntityViewDisplayAccessControlHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Access;
use Drupal\Core\Entity\Entity\Access\EntityViewDisplayAccessControlHandler;
diff --git a/core/tests/Drupal/Tests/Core/Entity/BaseFieldDefinitionTest.php b/core/tests/Drupal/Tests/Core/Entity/BaseFieldDefinitionTest.php
index 5b104a3aa2ec..7583848a1ecf 100644
--- a/core/tests/Drupal/Tests/Core/Entity/BaseFieldDefinitionTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/BaseFieldDefinitionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php b/core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php
index 38908b9aa605..6d7951bc9743 100644
--- a/core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/ContentEntityBaseUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php b/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php
index c3c2cbc0021a..5df0b8c7a6e5 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Enhancer/EntityRouteEnhancerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Enhancer;
use Drupal\Core\Entity\Enhancer\EntityRouteEnhancer;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityAccessCheckTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityAccessCheckTest.php
index ad5d0984de20..c5028fc654cb 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityAccessCheckTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Cache\Context\CacheContextsManager;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityConstraintViolationListTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityConstraintViolationListTest.php
index 3de507802fa6..6aeda12d3d5c 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityConstraintViolationListTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityConstraintViolationListTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Entity\EntityConstraintViolationList;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityCreateAccessCheckTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityCreateAccessCheckTest.php
index d9069f9382b8..7e93fa4f70c4 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityCreateAccessCheckTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityCreateAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
index d7e87ff4d787..cf2293b8d3ff 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityFormBuilderTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityFormBuilderTest.php
index 56ae73b6fbf5..aecf223435e3 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityFormBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityFormBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Entity\EntityFormBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityFormTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityFormTest.php
index b4cd603777af..3712b7fac625 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityFormTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Entity\EntityForm;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityLinkTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityLinkTest.php
index 978ab70e3a36..1398c4503d8d 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityLinkTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityLinkTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Config\Entity\ConfigEntityBase;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityListBuilderTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityListBuilderTest.php
index d2a2b46716de..4ab0e17c0bae 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityListBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityListBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityRepositoryTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityRepositoryTest.php
index 80328ea93b35..7048f2fbac76 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityRepositoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityRepositoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Entity\ContentEntityInterface;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityResolverManagerTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityResolverManagerTest.php
index 5ef74c2e1500..cdb68553e454 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityResolverManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityResolverManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Entity\EntityBase;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityStorageBaseTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityStorageBaseTest.php
index d5bf5f40af7b..bc6621b719e1 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityStorageBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityStorageBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityTypeBundleInfoTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityTypeBundleInfoTest.php
index 344af4a889b9..a18491f9a4ef 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityTypeBundleInfoTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityTypeBundleInfoTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityTypeManagerTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityTypeManagerTest.php
index 246b925d7577..ba0031958a3b 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityTypeManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityTypeManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityTypeRepositoryTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityTypeRepositoryTest.php
index 3488d3ea5aa0..e86fb2e484da 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityTypeRepositoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityTypeRepositoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityTypeTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityTypeTest.php
index 01a9fc1394b6..2a2c510d1418 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityTypeTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityTypeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Config\Entity\ConfigEntityInterface;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
index e23eabea6c41..c564a3e17f1e 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Entity/EntityUrlTest.php b/core/tests/Drupal/Tests/Core/Entity/EntityUrlTest.php
index cd9dc82ce775..2fc1f84b3f45 100644
--- a/core/tests/Drupal/Tests/Core/Entity/EntityUrlTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/EntityUrlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php b/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php
index 44e7f522fa54..fd72a312cb31 100644
--- a/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/FieldDefinitionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Entity/KeyValueStore/KeyValueEntityStorageTest.php b/core/tests/Drupal/Tests/Core/Entity/KeyValueStore/KeyValueEntityStorageTest.php
index ea94a0c07ce1..208f3cddd351 100644
--- a/core/tests/Drupal/Tests/Core/Entity/KeyValueStore/KeyValueEntityStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/KeyValueStore/KeyValueEntityStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\KeyValueStore;
use Drupal\Core\Cache\MemoryCache\MemoryCache;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Query/Sql/QueryTest.php b/core/tests/Drupal/Tests/Core/Entity/Query/Sql/QueryTest.php
index b733e8169565..5da95031017f 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Query/Sql/QueryTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Query/Sql/QueryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Query\Sql;
use Drupal\Core\Entity\EntityType;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Routing/DefaultHtmlRouteProviderTest.php b/core/tests/Drupal/Tests/Core/Entity/Routing/DefaultHtmlRouteProviderTest.php
index 6b9ed71b79f3..e8e207dadde6 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Routing/DefaultHtmlRouteProviderTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Routing/DefaultHtmlRouteProviderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Routing;
use Drupal\Core\Config\Entity\ConfigEntityTypeInterface;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php b/core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php
index d403e8dabc61..cd97ea8b379d 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Sql/DefaultTableMappingTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Sql;
use Drupal\Core\Entity\Sql\DefaultTableMapping;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php b/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php
index ac6941caa380..52882bf1599d 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Sql;
use Drupal\Core\Entity\ContentEntityType;
diff --git a/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageTest.php b/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageTest.php
index d9aab845abb2..f414fa399399 100644
--- a/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\Sql;
use Drupal\Core\Cache\MemoryCache\MemoryCache;
diff --git a/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php b/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php
index f960b296b382..3b4de81d80b1 100644
--- a/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Entity\TypedData;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php b/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php
index b201625730fe..d07c425ea545 100644
--- a/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php
+++ b/core/tests/Drupal/Tests/Core/Error/DrupalLogErrorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Error;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/ActiveLinkResponseFilterTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/ActiveLinkResponseFilterTest.php
index fecf8786d432..5657fa656ab8 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/ActiveLinkResponseFilterTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/ActiveLinkResponseFilterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Component\Serialization\Json;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/CustomPageExceptionHtmlSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/CustomPageExceptionHtmlSubscriberTest.php
index ea35df8665bd..50cbfb2e147f 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/CustomPageExceptionHtmlSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/CustomPageExceptionHtmlSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Component\Utility\UrlHelper;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/ExceptionJsonSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/ExceptionJsonSubscriberTest.php
index c8a33bce0a72..921d37019044 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/ExceptionJsonSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/ExceptionJsonSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\Cache\CacheableJsonResponse;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/FinalExceptionSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/FinalExceptionSubscriberTest.php
index 9e971cb4f041..5ed6330240d0 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/FinalExceptionSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/FinalExceptionSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\EventSubscriber\FinalExceptionSubscriber;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/FinishResponseSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/FinishResponseSubscriberTest.php
index f83951cc85a3..4a5033e939a4 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/FinishResponseSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/FinishResponseSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\Cache\Context\CacheContextsManager;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/ModuleRouteSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/ModuleRouteSubscriberTest.php
index fe9b7203340f..3b65d4039714 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/ModuleRouteSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/ModuleRouteSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\Routing\RouteBuildEvent;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/OptionsRequestSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/OptionsRequestSubscriberTest.php
index bcc51bb8abad..c186267eece7 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/OptionsRequestSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/OptionsRequestSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\EventSubscriber\OptionsRequestSubscriber;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/PathRootsSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/PathRootsSubscriberTest.php
index a330aaa17fa2..705de8068140 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/PathRootsSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/PathRootsSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\EventSubscriber\PathRootsSubscriber;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/PsrResponseSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/PsrResponseSubscriberTest.php
index a67c61918b61..e8fbd62b3f80 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/PsrResponseSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/PsrResponseSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/RedirectResponseSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/RedirectResponseSubscriberTest.php
index 7b76476ceed8..42921760ed73 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/RedirectResponseSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/RedirectResponseSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\EventSubscriber\RedirectResponseSubscriber;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/RssResponseRelativeUrlFilterTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/RssResponseRelativeUrlFilterTest.php
index fe0dd1d170f5..e126fdc54350 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/RssResponseRelativeUrlFilterTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/RssResponseRelativeUrlFilterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter;
diff --git a/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php b/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php
index 440b1e48c90b..179e09950408 100644
--- a/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/EventSubscriber/SpecialAttributesRouteSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\EventSubscriber;
use Drupal\Core\EventSubscriber\SpecialAttributesRouteSubscriber;
diff --git a/core/tests/Drupal/Tests/Core/Extension/DatabaseDriverListTest.php b/core/tests/Drupal/Tests/Core/Extension/DatabaseDriverListTest.php
index 99509d47a664..7f7c281a096b 100644
--- a/core/tests/Drupal/Tests/Core/Extension/DatabaseDriverListTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/DatabaseDriverListTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Core\Database\Database;
diff --git a/core/tests/Drupal/Tests/Core/Extension/DefaultConfigTest.php b/core/tests/Drupal/Tests/Core/Extension/DefaultConfigTest.php
index 29677b2c6ec9..44a01e2f6c7b 100644
--- a/core/tests/Drupal/Tests/Core/Extension/DefaultConfigTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/DefaultConfigTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Extension/DependencyTest.php b/core/tests/Drupal/Tests/Core/Extension/DependencyTest.php
index 865997272a5e..a57cd28156c3 100644
--- a/core/tests/Drupal/Tests/Core/Extension/DependencyTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/DependencyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Component\Version\Constraint;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ExtensionDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Extension/ExtensionDiscoveryTest.php
index 64df82b79e06..45c286c53253 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ExtensionDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ExtensionDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Component\FileCache\FileCacheFactory;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ExtensionListTest.php b/core/tests/Drupal/Tests/Core/Extension/ExtensionListTest.php
index a1ebab060ce1..fb96f146b409 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ExtensionListTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ExtensionListTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Component\Serialization\Yaml;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ExtensionSerializationTest.php b/core/tests/Drupal/Tests/Core/Extension/ExtensionSerializationTest.php
index 02c7ec19a1e9..8016d36ed1c4 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ExtensionSerializationTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ExtensionSerializationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ExtensionVersionTest.php b/core/tests/Drupal/Tests/Core/Extension/ExtensionVersionTest.php
index 1d5f08c1faa4..06aa51e53fdf 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ExtensionVersionTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ExtensionVersionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Core\Extension\ExtensionVersion;
diff --git a/core/tests/Drupal/Tests/Core/Extension/GenericTestExistsTest.php b/core/tests/Drupal/Tests/Core/Extension/GenericTestExistsTest.php
index a879b691f9c1..63696bb5d93c 100644
--- a/core/tests/Drupal/Tests/Core/Extension/GenericTestExistsTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/GenericTestExistsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Extension/InfoParserUnitTest.php b/core/tests/Drupal/Tests/Core/Extension/InfoParserUnitTest.php
index 67583e509a99..bf70c5522d47 100644
--- a/core/tests/Drupal/Tests/Core/Extension/InfoParserUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/InfoParserUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Core\Extension\ExtensionLifecycle;
diff --git a/core/tests/Drupal/Tests/Core/Extension/LegacyExtensionTest.php b/core/tests/Drupal/Tests/Core/Extension/LegacyExtensionTest.php
index e37238aad355..22c4f3f2960d 100644
--- a/core/tests/Drupal/Tests/Core/Extension/LegacyExtensionTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/LegacyExtensionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Core\Extension\Extension;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php b/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
index c989ea870db3..4f093a736c3e 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Core\Cache\CacheBackendInterface;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ModuleInfoTest.php b/core/tests/Drupal/Tests/Core/Extension/ModuleInfoTest.php
index c941a15ee86e..af1c33a56d77 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ModuleInfoTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ModuleInfoTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Component\Serialization\Yaml;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ModuleRequiredByThemesUninstallValidatorTest.php b/core/tests/Drupal/Tests/Core/Extension/ModuleRequiredByThemesUninstallValidatorTest.php
index d3b5e03ea01d..d1900369c26c 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ModuleRequiredByThemesUninstallValidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ModuleRequiredByThemesUninstallValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Core\Extension\ModuleExtensionList;
diff --git a/core/tests/Drupal/Tests/Core/Extension/RequiredModuleUninstallValidatorTest.php b/core/tests/Drupal/Tests/Core/Extension/RequiredModuleUninstallValidatorTest.php
index 9bd41d040dff..2e00d9e74812 100644
--- a/core/tests/Drupal/Tests/Core/Extension/RequiredModuleUninstallValidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/RequiredModuleUninstallValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ThemeExtensionListTest.php b/core/tests/Drupal/Tests/Core/Extension/ThemeExtensionListTest.php
index 51057ea77c33..19a9d2aabb51 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ThemeExtensionListTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ThemeExtensionListTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Drupal\Core\Cache\NullBackend;
diff --git a/core/tests/Drupal/Tests/Core/Extension/ThemeHandlerTest.php b/core/tests/Drupal/Tests/Core/Extension/ThemeHandlerTest.php
index 2e0012c7a9e0..935a28142174 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ThemeHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ThemeHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Extension;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Core/Field/BaseFieldDefinitionTestBase.php b/core/tests/Drupal/Tests/Core/Field/BaseFieldDefinitionTestBase.php
index 3398baf9f866..cda4a7d24b58 100644
--- a/core/tests/Drupal/Tests/Core/Field/BaseFieldDefinitionTestBase.php
+++ b/core/tests/Drupal/Tests/Core/Field/BaseFieldDefinitionTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php b/core/tests/Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php
index bff677cec036..614969324281 100644
--- a/core/tests/Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Core/Field/FieldFilteredMarkupTest.php b/core/tests/Drupal/Tests/Core/Field/FieldFilteredMarkupTest.php
index bae9edf30d73..645c67f5fbc6 100644
--- a/core/tests/Drupal/Tests/Core/Field/FieldFilteredMarkupTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/FieldFilteredMarkupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Field/FieldInputValueNormalizerTraitTest.php b/core/tests/Drupal/Tests/Core/Field/FieldInputValueNormalizerTraitTest.php
index 855622f24d72..1fa81d6bfb60 100644
--- a/core/tests/Drupal/Tests/Core/Field/FieldInputValueNormalizerTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/FieldInputValueNormalizerTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\Field\FieldInputValueNormalizerTrait;
diff --git a/core/tests/Drupal/Tests/Core/Field/FieldItemListTest.php b/core/tests/Drupal/Tests/Core/Field/FieldItemListTest.php
index a49f269aa504..e50b29b344fd 100644
--- a/core/tests/Drupal/Tests/Core/Field/FieldItemListTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/FieldItemListTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Field/FieldTypePluginManagerTest.php b/core/tests/Drupal/Tests/Core/Field/FieldTypePluginManagerTest.php
index b0253acc06e5..5e8aef87c08d 100644
--- a/core/tests/Drupal/Tests/Core/Field/FieldTypePluginManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/FieldTypePluginManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
diff --git a/core/tests/Drupal/Tests/Core/Field/InternalViolationTest.php b/core/tests/Drupal/Tests/Core/Field/InternalViolationTest.php
index 391eb2f658f3..355d4c22bb1f 100644
--- a/core/tests/Drupal/Tests/Core/Field/InternalViolationTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/InternalViolationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\Field\InternalViolation;
diff --git a/core/tests/Drupal/Tests/Core/Field/PluginSettingsBaseTest.php b/core/tests/Drupal/Tests/Core/Field/PluginSettingsBaseTest.php
index 25327ce3cdd7..b743c692b0fd 100644
--- a/core/tests/Drupal/Tests/Core/Field/PluginSettingsBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/PluginSettingsBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\Field\PluginSettingsBase;
diff --git a/core/tests/Drupal/Tests/Core/Field/StringItemTest.php b/core/tests/Drupal/Tests/Core/Field/StringItemTest.php
index b339f0a8fb84..b3b6cc0aac38 100644
--- a/core/tests/Drupal/Tests/Core/Field/StringItemTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/StringItemTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\Field\FieldDefinitionInterface;
diff --git a/core/tests/Drupal/Tests/Core/Field/TestBaseFieldDefinitionInterface.php b/core/tests/Drupal/Tests/Core/Field/TestBaseFieldDefinitionInterface.php
index 953c90209f99..e60a5856821f 100644
--- a/core/tests/Drupal/Tests/Core/Field/TestBaseFieldDefinitionInterface.php
+++ b/core/tests/Drupal/Tests/Core/Field/TestBaseFieldDefinitionInterface.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\Field\FieldDefinitionInterface;
diff --git a/core/tests/Drupal/Tests/Core/Field/UriItemTest.php b/core/tests/Drupal/Tests/Core/Field/UriItemTest.php
index 4c1406b55554..92d88b7ea985 100644
--- a/core/tests/Drupal/Tests/Core/Field/UriItemTest.php
+++ b/core/tests/Drupal/Tests/Core/Field/UriItemTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Field;
use Drupal\Core\Field\FieldDefinitionInterface;
diff --git a/core/tests/Drupal/Tests/Core/File/FileSystemTest.php b/core/tests/Drupal/Tests/Core/File/FileSystemTest.php
index 7e1b691f70ae..f8a3a402a22e 100644
--- a/core/tests/Drupal/Tests/Core/File/FileSystemTest.php
+++ b/core/tests/Drupal/Tests/Core/File/FileSystemTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\File;
use Drupal\Core\File\Exception\FileException;
diff --git a/core/tests/Drupal/Tests/Core/File/FileUploadSanitizeNameEventTest.php b/core/tests/Drupal/Tests/Core/File/FileUploadSanitizeNameEventTest.php
index 64fbd778236a..c1cf737df9e2 100644
--- a/core/tests/Drupal/Tests/Core/File/FileUploadSanitizeNameEventTest.php
+++ b/core/tests/Drupal/Tests/Core/File/FileUploadSanitizeNameEventTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\File;
use Drupal\Core\File\Event\FileUploadSanitizeNameEvent;
diff --git a/core/tests/Drupal/Tests/Core/Flood/MemoryBackendTest.php b/core/tests/Drupal/Tests/Core/Flood/MemoryBackendTest.php
index 369e79e91493..74d9fe20ddf2 100644
--- a/core/tests/Drupal/Tests/Core/Flood/MemoryBackendTest.php
+++ b/core/tests/Drupal/Tests/Core/Flood/MemoryBackendTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Flood;
use Drupal\Core\Flood\MemoryBackend;
diff --git a/core/tests/Drupal/Tests/Core/Form/ConfigFormBaseTraitTest.php b/core/tests/Drupal/Tests/Core/Form/ConfigFormBaseTraitTest.php
index e2c5554216b3..89c277ded385 100644
--- a/core/tests/Drupal/Tests/Core/Form/ConfigFormBaseTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/ConfigFormBaseTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\ConfigFormBaseTrait;
diff --git a/core/tests/Drupal/Tests/Core/Form/ConfigTargetTest.php b/core/tests/Drupal/Tests/Core/Form/ConfigTargetTest.php
index 5b153c0fd1dc..09e272230efc 100644
--- a/core/tests/Drupal/Tests/Core/Form/ConfigTargetTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/ConfigTargetTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Config\Config;
diff --git a/core/tests/Drupal/Tests/Core/Form/ConfirmFormHelperTest.php b/core/tests/Drupal/Tests/Core/Form/ConfirmFormHelperTest.php
index f50abc125391..cec16f9e06b4 100644
--- a/core/tests/Drupal/Tests/Core/Form/ConfirmFormHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/ConfirmFormHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\ConfirmFormHelper;
diff --git a/core/tests/Drupal/Tests/Core/Form/EventSubscriber/FormAjaxSubscriberTest.php b/core/tests/Drupal/Tests/Core/Form/EventSubscriber/FormAjaxSubscriberTest.php
index 6f3f4e44f628..32b928b18961 100644
--- a/core/tests/Drupal/Tests/Core/Form/EventSubscriber/FormAjaxSubscriberTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/EventSubscriber/FormAjaxSubscriberTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form\EventSubscriber;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormAjaxResponseBuilderTest.php b/core/tests/Drupal/Tests/Core/Form/FormAjaxResponseBuilderTest.php
index 3d4ff0414377..67ea24184478 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormAjaxResponseBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormAjaxResponseBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Ajax\AjaxResponse;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php b/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
index a89ee1179a4b..fe5f2c4d4570 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Component\Utility\Html;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormCacheTest.php b/core/tests/Drupal/Tests/Core/Form/FormCacheTest.php
index 765fcfe2814e..5b7f323fe05b 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormCacheTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormCacheTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\FormCache;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormElementHelperTest.php b/core/tests/Drupal/Tests/Core/Form/FormElementHelperTest.php
index 9a6a5bffff8e..03f09b904116 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormElementHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormElementHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\FormElementHelper;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormErrorHandlerTest.php b/core/tests/Drupal/Tests/Core/Form/FormErrorHandlerTest.php
index 237050d1b735..163df6a1fa79 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormErrorHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormErrorHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\FormState;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php b/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php
index 3fa9ab1b04ee..c29ebef96e8e 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Component\Serialization\Json;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormStateDecoratorBaseTest.php b/core/tests/Drupal/Tests/Core/Form/FormStateDecoratorBaseTest.php
index 114340c47217..b81d1ea6b4b0 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormStateDecoratorBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormStateDecoratorBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\FormInterface;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormStateTest.php b/core/tests/Drupal/Tests/Core/Form/FormStateTest.php
index 8f48f16fcc12..f8fb239b12e3 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormStateTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormStateTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\FormInterface;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormStateValuesTraitTest.php b/core/tests/Drupal/Tests/Core/Form/FormStateValuesTraitTest.php
index f5b2147b64ad..389955669382 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormStateValuesTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormStateValuesTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\FormStateValuesTrait;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormSubmitterTest.php b/core/tests/Drupal/Tests/Core/Form/FormSubmitterTest.php
index a7d8157ff802..e5fa53b2d34b 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormSubmitterTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormSubmitterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormTestBase.php b/core/tests/Drupal/Tests/Core/Form/FormTestBase.php
index a7d3c8122001..9de2c5e1ac99 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormTestBase.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Component\Utility\Html;
diff --git a/core/tests/Drupal/Tests/Core/Form/FormValidatorTest.php b/core/tests/Drupal/Tests/Core/Form/FormValidatorTest.php
index 4190834d19c1..db334a0feef6 100644
--- a/core/tests/Drupal/Tests/Core/Form/FormValidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/FormValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Core\Form\FormState;
diff --git a/core/tests/Drupal/Tests/Core/Form/OptGroupTest.php b/core/tests/Drupal/Tests/Core/Form/OptGroupTest.php
index b38f336709a6..dcd20b47b36a 100644
--- a/core/tests/Drupal/Tests/Core/Form/OptGroupTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/OptGroupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Form/SubformStateTest.php b/core/tests/Drupal/Tests/Core/Form/SubformStateTest.php
index 01d57e46a3ea..1f6d3df502f6 100644
--- a/core/tests/Drupal/Tests/Core/Form/SubformStateTest.php
+++ b/core/tests/Drupal/Tests/Core/Form/SubformStateTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Form;
use Drupal\Component\Utility\NestedArray;
diff --git a/core/tests/Drupal/Tests/Core/Http/CacheableExceptionTest.php b/core/tests/Drupal/Tests/Core/Http/CacheableExceptionTest.php
index 59290c3149d8..7dbd3f9fb405 100644
--- a/core/tests/Drupal/Tests/Core/Http/CacheableExceptionTest.php
+++ b/core/tests/Drupal/Tests/Core/Http/CacheableExceptionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Http;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/tests/Drupal/Tests/Core/Http/ClientFactoryTest.php b/core/tests/Drupal/Tests/Core/Http/ClientFactoryTest.php
index 4dfcaf7441eb..94a35cecbaad 100644
--- a/core/tests/Drupal/Tests/Core/Http/ClientFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Http/ClientFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Http;
use Drupal\Core\Http\ClientFactory;
diff --git a/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php b/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php
index 0d739989f193..a4b9d1c324c6 100644
--- a/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php
+++ b/core/tests/Drupal/Tests/Core/Http/RequestStackLegacyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Http;
use Drupal\Core\Http\RequestStack;
diff --git a/core/tests/Drupal/Tests/Core/Http/TrustedHostsRequestFactoryTest.php b/core/tests/Drupal/Tests/Core/Http/TrustedHostsRequestFactoryTest.php
index 8adb03cbca0e..b9895ee4e8fb 100644
--- a/core/tests/Drupal/Tests/Core/Http/TrustedHostsRequestFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Http/TrustedHostsRequestFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Http;
use Drupal\Core\Http\TrustedHostsRequestFactory;
diff --git a/core/tests/Drupal/Tests/Core/Image/ImageTest.php b/core/tests/Drupal/Tests/Core/Image/ImageTest.php
index df0aa4cbecd8..80cb15d75162 100644
--- a/core/tests/Drupal/Tests/Core/Image/ImageTest.php
+++ b/core/tests/Drupal/Tests/Core/Image/ImageTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Image;
use Drupal\Core\File\FileSystemInterface;
diff --git a/core/tests/Drupal/Tests/Core/Language/LanguageUnitTest.php b/core/tests/Drupal/Tests/Core/Language/LanguageUnitTest.php
index f7e146f47804..67e16ab64ec7 100644
--- a/core/tests/Drupal/Tests/Core/Language/LanguageUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Language/LanguageUnitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Language;
use Drupal\Core\Language\Language;
diff --git a/core/tests/Drupal/Tests/Core/Layout/LayoutDefaultTest.php b/core/tests/Drupal/Tests/Core/Layout/LayoutDefaultTest.php
index 30b147100576..142b31a3d76c 100644
--- a/core/tests/Drupal/Tests/Core/Layout/LayoutDefaultTest.php
+++ b/core/tests/Drupal/Tests/Core/Layout/LayoutDefaultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Layout;
use Drupal\Core\Layout\LayoutDefault;
diff --git a/core/tests/Drupal/Tests/Core/Layout/LayoutPluginManagerTest.php b/core/tests/Drupal/Tests/Core/Layout/LayoutPluginManagerTest.php
index 58e03dc70698..7ce72081d8e3 100644
--- a/core/tests/Drupal/Tests/Core/Layout/LayoutPluginManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Layout/LayoutPluginManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Layout;
use Drupal\Component\Plugin\Derivative\DeriverBase;
diff --git a/core/tests/Drupal/Tests/Core/Listeners/DrupalStandardsListenerDeprecationTest.php b/core/tests/Drupal/Tests/Core/Listeners/DrupalStandardsListenerDeprecationTest.php
index d323a2b433b5..6c54105dc267 100644
--- a/core/tests/Drupal/Tests/Core/Listeners/DrupalStandardsListenerDeprecationTest.php
+++ b/core/tests/Drupal/Tests/Core/Listeners/DrupalStandardsListenerDeprecationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Listeners;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Lock/LockBackendAbstractTest.php b/core/tests/Drupal/Tests/Core/Lock/LockBackendAbstractTest.php
index 25d0d204c176..0fcefcd0a8b1 100644
--- a/core/tests/Drupal/Tests/Core/Lock/LockBackendAbstractTest.php
+++ b/core/tests/Drupal/Tests/Core/Lock/LockBackendAbstractTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Lock;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Logger/LogMessageParserTest.php b/core/tests/Drupal/Tests/Core/Logger/LogMessageParserTest.php
index 088a26e01eb6..a9a71766c180 100644
--- a/core/tests/Drupal/Tests/Core/Logger/LogMessageParserTest.php
+++ b/core/tests/Drupal/Tests/Core/Logger/LogMessageParserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Logger;
use Drupal\Core\Logger\LogMessageParser;
diff --git a/core/tests/Drupal/Tests/Core/Logger/LoggerChannelFactoryTest.php b/core/tests/Drupal/Tests/Core/Logger/LoggerChannelFactoryTest.php
index 50f2e3c55986..fe9884151d60 100644
--- a/core/tests/Drupal/Tests/Core/Logger/LoggerChannelFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Logger/LoggerChannelFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Logger;
use Drupal\Core\Logger\LoggerChannelFactory;
diff --git a/core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php b/core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php
index fa82a208b96a..b0896b3fc4ff 100644
--- a/core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php
+++ b/core/tests/Drupal/Tests/Core/Logger/LoggerChannelTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Logger;
use Drupal\Core\Logger\LoggerChannel;
diff --git a/core/tests/Drupal/Tests/Core/Mail/MailFormatHelperTest.php b/core/tests/Drupal/Tests/Core/Mail/MailFormatHelperTest.php
index 84a3981e0a8e..52b4bbd0f6e8 100644
--- a/core/tests/Drupal/Tests/Core/Mail/MailFormatHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Mail/MailFormatHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Mail;
use Drupal\Core\Mail\MailFormatHelper;
diff --git a/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php b/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php
index b90ae632d642..c4640b90ae54 100644
--- a/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Mail;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/PhpMailTest.php b/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/PhpMailTest.php
index a139d8a0ac95..35d783e7725c 100644
--- a/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/PhpMailTest.php
+++ b/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/PhpMailTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Mail\Plugin\Mail;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/SymfonyMailerTest.php b/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/SymfonyMailerTest.php
index 99ec411a754f..40fa0911daab 100644
--- a/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/SymfonyMailerTest.php
+++ b/core/tests/Drupal/Tests/Core/Mail/Plugin/Mail/SymfonyMailerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Mail\Plugin\Mail;
use Drupal\Component\Render\FormattableMarkup;
diff --git a/core/tests/Drupal/Tests/Core/Menu/ContextualLinkDefaultTest.php b/core/tests/Drupal/Tests/Core/Menu/ContextualLinkDefaultTest.php
index 49a764680bcf..ccba55d707e3 100644
--- a/core/tests/Drupal/Tests/Core/Menu/ContextualLinkDefaultTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/ContextualLinkDefaultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\ContextualLinkDefault;
diff --git a/core/tests/Drupal/Tests/Core/Menu/ContextualLinkManagerTest.php b/core/tests/Drupal/Tests/Core/Menu/ContextualLinkManagerTest.php
index 55087bb87b40..94735d890faa 100644
--- a/core/tests/Drupal/Tests/Core/Menu/ContextualLinkManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/ContextualLinkManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Component\Plugin\Exception\PluginException;
diff --git a/core/tests/Drupal/Tests/Core/Menu/DefaultMenuLinkTreeManipulatorsTest.php b/core/tests/Drupal/Tests/Core/Menu/DefaultMenuLinkTreeManipulatorsTest.php
index 05bf62108219..ff585943c483 100644
--- a/core/tests/Drupal/Tests/Core/Menu/DefaultMenuLinkTreeManipulatorsTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/DefaultMenuLinkTreeManipulatorsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Menu/DynamicMenuLinkMock.php b/core/tests/Drupal/Tests/Core/Menu/DynamicMenuLinkMock.php
index 0fd857184747..45034adaba09 100644
--- a/core/tests/Drupal/Tests/Core/Menu/DynamicMenuLinkMock.php
+++ b/core/tests/Drupal/Tests/Core/Menu/DynamicMenuLinkMock.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Session\AccountInterface;
diff --git a/core/tests/Drupal/Tests/Core/Menu/LocalActionDefaultTest.php b/core/tests/Drupal/Tests/Core/Menu/LocalActionDefaultTest.php
index de7f2c5c1374..09bf2b601e1a 100644
--- a/core/tests/Drupal/Tests/Core/Menu/LocalActionDefaultTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/LocalActionDefaultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\LocalActionDefault;
diff --git a/core/tests/Drupal/Tests/Core/Menu/LocalActionManagerTest.php b/core/tests/Drupal/Tests/Core/Menu/LocalActionManagerTest.php
index 90477abd323e..b2ab4446e9b3 100644
--- a/core/tests/Drupal/Tests/Core/Menu/LocalActionManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/LocalActionManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Component\Plugin\Discovery\DiscoveryInterface;
diff --git a/core/tests/Drupal/Tests/Core/Menu/LocalTaskDefaultTest.php b/core/tests/Drupal/Tests/Core/Menu/LocalTaskDefaultTest.php
index 905107086d2c..7d966e36aaa2 100644
--- a/core/tests/Drupal/Tests/Core/Menu/LocalTaskDefaultTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/LocalTaskDefaultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\LocalTaskDefault;
diff --git a/core/tests/Drupal/Tests/Core/Menu/LocalTaskIntegrationTestBase.php b/core/tests/Drupal/Tests/Core/Menu/LocalTaskIntegrationTestBase.php
index 7639ee7ddb36..afe1db28365e 100644
--- a/core/tests/Drupal/Tests/Core/Menu/LocalTaskIntegrationTestBase.php
+++ b/core/tests/Drupal/Tests/Core/Menu/LocalTaskIntegrationTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Plugin\Discovery\ContainerDerivativeDiscoveryDecorator;
diff --git a/core/tests/Drupal/Tests/Core/Menu/LocalTaskManagerTest.php b/core/tests/Drupal/Tests/Core/Menu/LocalTaskManagerTest.php
index dfb55098a369..7c554e0a22e8 100644
--- a/core/tests/Drupal/Tests/Core/Menu/LocalTaskManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/LocalTaskManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php b/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php
index 7966ba20314d..54c2d22eb6b8 100644
--- a/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/MenuActiveTrailTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\MenuActiveTrail;
diff --git a/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultFormTest.php b/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultFormTest.php
index 0bb828b2ff1e..60176e4d1ff3 100644
--- a/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultFormTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultFormTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Extension\ModuleHandlerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultTest.php b/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultTest.php
index 11c0292c2e6e..2e300cfffad8 100644
--- a/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/MenuLinkDefaultTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\MenuLinkDefault;
diff --git a/core/tests/Drupal/Tests/Core/Menu/MenuLinkMock.php b/core/tests/Drupal/Tests/Core/Menu/MenuLinkMock.php
index 52bb6bb9e9f7..82b38aa8f9a7 100644
--- a/core/tests/Drupal/Tests/Core/Menu/MenuLinkMock.php
+++ b/core/tests/Drupal/Tests/Core/Menu/MenuLinkMock.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Menu/MenuLinkTreeElementTest.php b/core/tests/Drupal/Tests/Core/Menu/MenuLinkTreeElementTest.php
index 9eaa8c68cedb..720b0da0381c 100644
--- a/core/tests/Drupal/Tests/Core/Menu/MenuLinkTreeElementTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/MenuLinkTreeElementTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\MenuLinkTreeElement;
diff --git a/core/tests/Drupal/Tests/Core/Menu/MenuTreeParametersTest.php b/core/tests/Drupal/Tests/Core/Menu/MenuTreeParametersTest.php
index 864ab5f4c238..8b87382fb920 100644
--- a/core/tests/Drupal/Tests/Core/Menu/MenuTreeParametersTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/MenuTreeParametersTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\MenuTreeParameters;
diff --git a/core/tests/Drupal/Tests/Core/Menu/StaticMenuLinkOverridesTest.php b/core/tests/Drupal/Tests/Core/Menu/StaticMenuLinkOverridesTest.php
index a440d539d367..8dabf4ccae16 100644
--- a/core/tests/Drupal/Tests/Core/Menu/StaticMenuLinkOverridesTest.php
+++ b/core/tests/Drupal/Tests/Core/Menu/StaticMenuLinkOverridesTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Menu;
use Drupal\Core\Menu\StaticMenuLinkOverrides;
diff --git a/core/tests/Drupal/Tests/Core/PageCache/ChainRequestPolicyTest.php b/core/tests/Drupal/Tests/Core/PageCache/ChainRequestPolicyTest.php
index 69dfb6625fc4..cf612b8f3777 100644
--- a/core/tests/Drupal/Tests/Core/PageCache/ChainRequestPolicyTest.php
+++ b/core/tests/Drupal/Tests/Core/PageCache/ChainRequestPolicyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\PageCache;
use Drupal\Core\PageCache\RequestPolicyInterface;
diff --git a/core/tests/Drupal/Tests/Core/PageCache/ChainResponsePolicyTest.php b/core/tests/Drupal/Tests/Core/PageCache/ChainResponsePolicyTest.php
index 571958865b4e..5daf21b7743d 100644
--- a/core/tests/Drupal/Tests/Core/PageCache/ChainResponsePolicyTest.php
+++ b/core/tests/Drupal/Tests/Core/PageCache/ChainResponsePolicyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\PageCache;
use Drupal\Core\PageCache\ResponsePolicyInterface;
diff --git a/core/tests/Drupal/Tests/Core/PageCache/CommandLineOrUnsafeMethodTest.php b/core/tests/Drupal/Tests/Core/PageCache/CommandLineOrUnsafeMethodTest.php
index 2ae2e965e0a5..fab3ccd2996a 100644
--- a/core/tests/Drupal/Tests/Core/PageCache/CommandLineOrUnsafeMethodTest.php
+++ b/core/tests/Drupal/Tests/Core/PageCache/CommandLineOrUnsafeMethodTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\PageCache;
use Drupal\Core\PageCache\RequestPolicyInterface;
diff --git a/core/tests/Drupal/Tests/Core/PageCache/NoSessionOpenTest.php b/core/tests/Drupal/Tests/Core/PageCache/NoSessionOpenTest.php
index f863cd27621f..026705cc9863 100644
--- a/core/tests/Drupal/Tests/Core/PageCache/NoSessionOpenTest.php
+++ b/core/tests/Drupal/Tests/Core/PageCache/NoSessionOpenTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\PageCache;
use Drupal\Core\PageCache\RequestPolicy\NoSessionOpen;
diff --git a/core/tests/Drupal/Tests/Core/ParamConverter/EntityConverterTest.php b/core/tests/Drupal/Tests/Core/ParamConverter/EntityConverterTest.php
index 827b8d79b39b..b595fdb74a38 100644
--- a/core/tests/Drupal/Tests/Core/ParamConverter/EntityConverterTest.php
+++ b/core/tests/Drupal/Tests/Core/ParamConverter/EntityConverterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\ParamConverter;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Core/ParamConverter/EntityRevisionParamConverterTest.php b/core/tests/Drupal/Tests/Core/ParamConverter/EntityRevisionParamConverterTest.php
index a74b87cf633c..2592562b9e2b 100644
--- a/core/tests/Drupal/Tests/Core/ParamConverter/EntityRevisionParamConverterTest.php
+++ b/core/tests/Drupal/Tests/Core/ParamConverter/EntityRevisionParamConverterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\ParamConverter;
use Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException;
diff --git a/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php b/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php
index b3858a136a5b..017c50179c9a 100644
--- a/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/ParamConverter/ParamConverterManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\ParamConverter;
use Drupal\Core\ParamConverter\ParamConverterManager;
diff --git a/core/tests/Drupal/Tests/Core/Password/DefaultPasswordGeneratorTest.php b/core/tests/Drupal/Tests/Core/Password/DefaultPasswordGeneratorTest.php
index 2bbf38d1a191..aa8db53413ef 100644
--- a/core/tests/Drupal/Tests/Core/Password/DefaultPasswordGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Password/DefaultPasswordGeneratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Password;
use Drupal\Core\Password\DefaultPasswordGenerator;
diff --git a/core/tests/Drupal/Tests/Core/Password/PasswordHashingLegacyTest.php b/core/tests/Drupal/Tests/Core/Password/PasswordHashingLegacyTest.php
index 32066b8f9f16..997ad0a0f9b7 100644
--- a/core/tests/Drupal/Tests/Core/Password/PasswordHashingLegacyTest.php
+++ b/core/tests/Drupal/Tests/Core/Password/PasswordHashingLegacyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Password;
use Drupal\Core\Password\PhpassHashedPassword;
diff --git a/core/tests/Drupal/Tests/Core/Password/PhpPasswordTest.php b/core/tests/Drupal/Tests/Core/Password/PhpPasswordTest.php
index f781fd7d6e94..646df5091637 100644
--- a/core/tests/Drupal/Tests/Core/Password/PhpPasswordTest.php
+++ b/core/tests/Drupal/Tests/Core/Password/PhpPasswordTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Password;
use Drupal\Core\Password\PhpPassword;
diff --git a/core/tests/Drupal/Tests/Core/Path/PathMatcherTest.php b/core/tests/Drupal/Tests/Core/Path/PathMatcherTest.php
index 02c3ef15a8c7..d733204fa14d 100644
--- a/core/tests/Drupal/Tests/Core/Path/PathMatcherTest.php
+++ b/core/tests/Drupal/Tests/Core/Path/PathMatcherTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Path;
use Drupal\Core\Path\PathMatcher;
diff --git a/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php b/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php
index 1d25ee6f37a2..62e295861d03 100644
--- a/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Path/PathValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Path;
use Drupal\Core\ParamConverter\ParamNotConvertedException;
diff --git a/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorFrontTest.php b/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorFrontTest.php
index df82584fa4ff..782fe3b55c92 100644
--- a/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorFrontTest.php
+++ b/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorFrontTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\PathProcessor;
use Drupal\Core\Config\ConfigFactoryInterface;
diff --git a/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php b/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php
index 08186df8fe74..a7018c32b520 100644
--- a/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php
+++ b/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\PathProcessor;
use Drupal\Core\Language\Language;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php b/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php
index 98c2f4098131..967ac68bb098 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/CategorizingPluginManagerTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\CategorizingPluginManagerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionIsSatisfiedTest.php b/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionIsSatisfiedTest.php
index af5f1a1cc0a8..66266bd616ca 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionIsSatisfiedTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionIsSatisfiedTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Context;
use Drupal\Core\Cache\NullBackend;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionTest.php b/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionTest.php
index 7d68889da6ff..6a54511a545a 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Context;
use Drupal\Component\Plugin\Context\ContextDefinitionInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Context/ContextTest.php b/core/tests/Drupal/Tests/Core/Plugin/Context/ContextTest.php
index a1c49a6b54f4..4e2d49a28829 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Context/ContextTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Context/ContextTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Context;
use Drupal\Core\Cache\CacheableDependencyInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Context/EntityContextDefinitionIsSatisfiedTest.php b/core/tests/Drupal/Tests/Core/Plugin/Context/EntityContextDefinitionIsSatisfiedTest.php
index 0a8a50a67c30..58cc1e1102ab 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Context/EntityContextDefinitionIsSatisfiedTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Context/EntityContextDefinitionIsSatisfiedTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Context;
use Drupal\Core\Cache\NullBackend;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Context/LazyContextRepositoryTest.php b/core/tests/Drupal/Tests/Core/Plugin/Context/LazyContextRepositoryTest.php
index a1b9c8012b12..82240491a19f 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Context/LazyContextRepositoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Context/LazyContextRepositoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Context;
use Drupal\Core\Plugin\Context\Context;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/ContextHandlerTest.php b/core/tests/Drupal/Tests/Core/Plugin/ContextHandlerTest.php
index 554882383177..c3a655eb3837 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/ContextHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/ContextHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\ConfigurableInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/DefaultLazyPluginCollectionTest.php b/core/tests/Drupal/Tests/Core/Plugin/DefaultLazyPluginCollectionTest.php
index 8b3ba096ed75..5f78e8ac8930 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/DefaultLazyPluginCollectionTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/DefaultLazyPluginCollectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\ConfigurableInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php b/core/tests/Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php
index 49369cc58b28..196598b40f1a 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\Definition\PluginDefinition;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/DefaultSingleLazyPluginCollectionTest.php b/core/tests/Drupal/Tests/Core/Plugin/DefaultSingleLazyPluginCollectionTest.php
index d73bb5d5a284..fac04e78ddd8 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/DefaultSingleLazyPluginCollectionTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/DefaultSingleLazyPluginCollectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\ConfigurableInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/ContainerDerivativeDiscoveryDecoratorTest.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/ContainerDerivativeDiscoveryDecoratorTest.php
index c47eba77faec..b1bebdd43ade 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/ContainerDerivativeDiscoveryDecoratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/ContainerDerivativeDiscoveryDecoratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Core\Plugin\Discovery\ContainerDerivativeDiscoveryDecorator;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php
index e3b45e77d06e..d7a2c5b8256d 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/DerivativeDiscoveryDecoratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Component\Plugin\Definition\DerivablePluginDefinitionInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php
index 5e3957a7f73d..f5020d85706c 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Component\Plugin\Exception\PluginNotFoundException;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestContainerDerivativeDiscovery.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestContainerDerivativeDiscovery.php
index 9c3c3c348c4b..149589d3fb13 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestContainerDerivativeDiscovery.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestContainerDerivativeDiscovery.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscovery.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscovery.php
index 63f50d64c796..5731c0526959 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscovery.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscovery.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Component\Plugin\Derivative\DeriverInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscoveryWithObject.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscoveryWithObject.php
index f05142de62de..5142ad81adb1 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscoveryWithObject.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/TestDerivativeDiscoveryWithObject.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Component\Plugin\Derivative\DeriverInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDirectoryDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDirectoryDiscoveryTest.php
index 3aec91645105..8f5d9dad20a5 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDirectoryDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDirectoryDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Component\Discovery\YamlDirectoryDiscovery as ComponentYamlDirectoryDiscovery;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryDecoratorTest.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryDecoratorTest.php
index 5717f75ca115..634979c8d51d 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryDecoratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryDecoratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryTest.php
index fa12c88f2e1d..fe41eb82a230 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/YamlDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Discovery;
use Drupal\Core\StringTranslation\TranslatableMarkup;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/FilteredPluginManagerTraitTest.php b/core/tests/Drupal/Tests/Core/Plugin/FilteredPluginManagerTraitTest.php
index 9642949de250..e0a5f141ffba 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/FilteredPluginManagerTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/FilteredPluginManagerTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\PluginManagerBase;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/InheritedContextDefinition.php b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/InheritedContextDefinition.php
index f1b9839de7dc..39d8fc5cf204 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/InheritedContextDefinition.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/InheritedContextDefinition.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Fixtures;
use Drupal\Core\Plugin\Context\ContextDefinition;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataType.php b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataType.php
index f647238accca..01529603ddc3 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataType.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataType.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Fixtures\Plugin\DataType;
use Drupal\Core\TypedData\TypedData;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataTypeDeriver.php b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataTypeDeriver.php
index b7328270b2d2..d94b695592b5 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataTypeDeriver.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/Plugin/DataType/TestDataTypeDeriver.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Fixtures\Plugin\DataType;
use Drupal\Component\Plugin\Derivative\DeriverBase;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/TestConfigurablePlugin.php b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/TestConfigurablePlugin.php
index e31fba7b59df..5ba42ba21604 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Fixtures/TestConfigurablePlugin.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Fixtures/TestConfigurablePlugin.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin\Fixtures;
use Drupal\Component\Plugin\ConfigurableInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/LazyPluginCollectionTestBase.php b/core/tests/Drupal/Tests/Core/Plugin/LazyPluginCollectionTestBase.php
index 0b1468c459e1..d14cff7867f8 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/LazyPluginCollectionTestBase.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/LazyPluginCollectionTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Core\Plugin\DefaultLazyPluginCollection;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/PluginDependencyTraitTest.php b/core/tests/Drupal/Tests/Core/Plugin/PluginDependencyTraitTest.php
index b5998c1f4d63..0befb6181f42 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/PluginDependencyTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/PluginDependencyTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\Definition\PluginDefinitionInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/PluginExistsConstraintTest.php b/core/tests/Drupal/Tests/Core/Plugin/PluginExistsConstraintTest.php
index d5210d2e0963..f9a6ace94088 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/PluginExistsConstraintTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/PluginExistsConstraintTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\DependencyInjection\ContainerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/PluginFormFactoryTest.php b/core/tests/Drupal/Tests/Core/Plugin/PluginFormFactoryTest.php
index 0d6ad57500b5..cc1da0d5809b 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/PluginFormFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/PluginFormFactoryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/PluginWithFormsTraitTest.php b/core/tests/Drupal/Tests/Core/Plugin/PluginWithFormsTraitTest.php
index 2a78baca9fb3..4c1b10ebf610 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/PluginWithFormsTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/PluginWithFormsTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\PluginBase;
diff --git a/core/tests/Drupal/Tests/Core/Plugin/TestPluginManager.php b/core/tests/Drupal/Tests/Core/Plugin/TestPluginManager.php
index d1ba489d23a4..4f001bfda58d 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/TestPluginManager.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/TestPluginManager.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Plugin;
use Drupal\Component\Plugin\Discovery\StaticDiscovery;
diff --git a/core/tests/Drupal/Tests/Core/PrivateKeyTest.php b/core/tests/Drupal/Tests/Core/PrivateKeyTest.php
index 932bf0a2f74c..7a0c86f02e40 100644
--- a/core/tests/Drupal/Tests/Core/PrivateKeyTest.php
+++ b/core/tests/Drupal/Tests/Core/PrivateKeyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core;
use Drupal\Core\PrivateKey;
diff --git a/core/tests/Drupal/Tests/Core/ProxyBuilder/ProxyBuilderTest.php b/core/tests/Drupal/Tests/Core/ProxyBuilder/ProxyBuilderTest.php
index 1804182b799c..969c70a345de 100644
--- a/core/tests/Drupal/Tests/Core/ProxyBuilder/ProxyBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/ProxyBuilder/ProxyBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\ProxyBuilder;
use Drupal\Core\ProxyBuilder\ProxyBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Queue/QueueExceptionsTest.php b/core/tests/Drupal/Tests/Core/Queue/QueueExceptionsTest.php
index b95bf82a0a28..8f71e30fbdf7 100644
--- a/core/tests/Drupal/Tests/Core/Queue/QueueExceptionsTest.php
+++ b/core/tests/Drupal/Tests/Core/Queue/QueueExceptionsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Queue;
use Drupal\Core\Queue\DelayedRequeueException;
diff --git a/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php b/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
index 18d250c2d540..c0502152bea5 100644
--- a/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php b/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php
index 78da7e4fd724..e0f5bceb13f9 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Render\Markup;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/MachineNameTest.php b/core/tests/Drupal/Tests/Core/Render/Element/MachineNameTest.php
index 4ff41361ce66..c6ccbc3f3aa2 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/MachineNameTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/MachineNameTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Access\CsrfTokenGenerator;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/PasswordConfirmTest.php b/core/tests/Drupal/Tests/Core/Render/Element/PasswordConfirmTest.php
index 75035c99ceb2..655f8da70ea4 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/PasswordConfirmTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/PasswordConfirmTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Form\FormStateInterface;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/PasswordTest.php b/core/tests/Drupal/Tests/Core/Render/Element/PasswordTest.php
index a908cc784b6a..35dcea028dba 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/PasswordTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/PasswordTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Form\FormStateInterface;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/RenderElementTest.php b/core/tests/Drupal/Tests/Core/Render/Element/RenderElementTest.php
index be8f53c2afa7..6ee1d37f1664 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/RenderElementTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/RenderElementTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/TableSelectTest.php b/core/tests/Drupal/Tests/Core/Render/Element/TableSelectTest.php
index f095ae57368e..95d7bcb952c7 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/TableSelectTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/TableSelectTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Form\FormState;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/TextareaTest.php b/core/tests/Drupal/Tests/Core/Render/Element/TextareaTest.php
index 19b894c198fd..3218c61d6d99 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/TextareaTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/TextareaTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Form\FormStateInterface;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/TextfieldTest.php b/core/tests/Drupal/Tests/Core/Render/Element/TextfieldTest.php
index e15c85786872..640bff423eda 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/TextfieldTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/TextfieldTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Form\FormStateInterface;
diff --git a/core/tests/Drupal/Tests/Core/Render/Element/TokenTest.php b/core/tests/Drupal/Tests/Core/Render/Element/TokenTest.php
index e5bbf6375e3a..1efeb73a88f2 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/TokenTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/TokenTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Element;
use Drupal\Core\Form\FormStateInterface;
diff --git a/core/tests/Drupal/Tests/Core/Render/ElementInfoManagerTest.php b/core/tests/Drupal/Tests/Core/Render/ElementInfoManagerTest.php
index 32eb55f315f9..d9a970c7c94b 100644
--- a/core/tests/Drupal/Tests/Core/Render/ElementInfoManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/ElementInfoManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Extension\ThemeHandlerInterface;
diff --git a/core/tests/Drupal/Tests/Core/Render/ElementTest.php b/core/tests/Drupal/Tests/Core/Render/ElementTest.php
index da5f5694dcf2..39e0aae6aeca 100644
--- a/core/tests/Drupal/Tests/Core/Render/ElementTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/ElementTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php b/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php
index 7bbdce9c43a1..2b1e75f32fdc 100644
--- a/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/MetadataBubblingUrlGeneratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Render\MetadataBubblingUrlGenerator;
diff --git a/core/tests/Drupal/Tests/Core/Render/Placeholder/ChainedPlaceholderStrategyTest.php b/core/tests/Drupal/Tests/Core/Render/Placeholder/ChainedPlaceholderStrategyTest.php
index bbffcd04fd9c..3d9282d60e69 100644
--- a/core/tests/Drupal/Tests/Core/Render/Placeholder/ChainedPlaceholderStrategyTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Placeholder/ChainedPlaceholderStrategyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render\Placeholder;
use Drupal\Core\Render\Placeholder\ChainedPlaceholderStrategy;
diff --git a/core/tests/Drupal/Tests/Core/Render/PlaceholderGeneratorTest.php b/core/tests/Drupal/Tests/Core/Render/PlaceholderGeneratorTest.php
index 35ab27829b2b..c248c9f78faf 100644
--- a/core/tests/Drupal/Tests/Core/Render/PlaceholderGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/PlaceholderGeneratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Component\Utility\Html;
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php b/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php
index eec25807ded5..b1ef2e2f7f04 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererBubblingTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererCallbackTest.php b/core/tests/Drupal/Tests/Core/Render/RendererCallbackTest.php
index ca63dee68e1b..941455add108 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererCallbackTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererCallbackTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Security\UntrustedCallbackException;
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php b/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php
index 428f33c38878..1933101ea4d0 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererPlaceholdersTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Component\Utility\Crypt;
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererRecursionTest.php b/core/tests/Drupal/Tests/Core/Render/RendererRecursionTest.php
index d9716c39ed29..d6efc9b3888f 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererRecursionTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererRecursionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
/**
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererTest.php b/core/tests/Drupal/Tests/Core/Render/RendererTest.php
index de08a3d32228..e0e4ebd43882 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Component\Render\MarkupInterface;
diff --git a/core/tests/Drupal/Tests/Core/Render/RendererTestBase.php b/core/tests/Drupal/Tests/Core/Render/RendererTestBase.php
index e871f5db0c1c..b5be54f89e32 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererTestBase.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Render/TestCacheableDependency.php b/core/tests/Drupal/Tests/Core/Render/TestCacheableDependency.php
index 298a2bf04c51..a73a83aef6df 100644
--- a/core/tests/Drupal/Tests/Core/Render/TestCacheableDependency.php
+++ b/core/tests/Drupal/Tests/Core/Render/TestCacheableDependency.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Render;
use Drupal\Core\Cache\CacheableDependencyInterface;
diff --git a/core/tests/Drupal/Tests/Core/Route/RoleAccessCheckTest.php b/core/tests/Drupal/Tests/Core/Route/RoleAccessCheckTest.php
index 96a01b431ca9..cd30ec3e1640 100644
--- a/core/tests/Drupal/Tests/Core/Route/RoleAccessCheckTest.php
+++ b/core/tests/Drupal/Tests/Core/Route/RoleAccessCheckTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Route;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/RouteProcessor/RouteProcessorManagerTest.php b/core/tests/Drupal/Tests/Core/RouteProcessor/RouteProcessorManagerTest.php
index 0af99d38d08e..7541dbd687e0 100644
--- a/core/tests/Drupal/Tests/Core/RouteProcessor/RouteProcessorManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/RouteProcessor/RouteProcessorManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\RouteProcessor;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Routing/AcceptHeaderMatcherTest.php b/core/tests/Drupal/Tests/Core/Routing/AcceptHeaderMatcherTest.php
index 8b5e9c0d4c2e..d05e0fe67446 100644
--- a/core/tests/Drupal/Tests/Core/Routing/AcceptHeaderMatcherTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/AcceptHeaderMatcherTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\accept_header_routing_test\Routing\AcceptHeaderMatcher;
diff --git a/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php b/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php
index 712197d8ee80..95e0bb96a8f4 100644
--- a/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Access\AccessResult;
diff --git a/core/tests/Drupal/Tests/Core/Routing/ContentTypeHeaderMatcherTest.php b/core/tests/Drupal/Tests/Core/Routing/ContentTypeHeaderMatcherTest.php
index e07cefc85125..da8facef8dda 100644
--- a/core/tests/Drupal/Tests/Core/Routing/ContentTypeHeaderMatcherTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/ContentTypeHeaderMatcherTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\ContentTypeHeaderMatcher;
diff --git a/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php b/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php
index 6af85f360210..3eeb8c36e069 100644
--- a/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/CurrentRouteMatchTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\CurrentRouteMatch;
diff --git a/core/tests/Drupal/Tests/Core/Routing/LazyRouteCollectionTest.php b/core/tests/Drupal/Tests/Core/Routing/LazyRouteCollectionTest.php
index 2c1283e4c11b..54df9e2b819a 100644
--- a/core/tests/Drupal/Tests/Core/Routing/LazyRouteCollectionTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/LazyRouteCollectionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Routing/MethodFilterTest.php b/core/tests/Drupal/Tests/Core/Routing/MethodFilterTest.php
index 563d6065a4de..31ac253a4dfc 100644
--- a/core/tests/Drupal/Tests/Core/Routing/MethodFilterTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/MethodFilterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\MethodFilter;
diff --git a/core/tests/Drupal/Tests/Core/Routing/PathChangedHelperTest.php b/core/tests/Drupal/Tests/Core/Routing/PathChangedHelperTest.php
index 8cdcbfb5d19c..ce07c2fc9311 100644
--- a/core/tests/Drupal/Tests/Core/Routing/PathChangedHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/PathChangedHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\PathChangedHelper;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RedirectDestinationTest.php b/core/tests/Drupal/Tests/Core/Routing/RedirectDestinationTest.php
index 0a401af99c26..a41e39ef61f7 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RedirectDestinationTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RedirectDestinationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Component\Utility\UrlHelper;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RequestFormatRouteFilterTest.php b/core/tests/Drupal/Tests/Core/Routing/RequestFormatRouteFilterTest.php
index 22296418aaee..e6ba2b480a79 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RequestFormatRouteFilterTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RequestFormatRouteFilterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RouteBuilderTest.php b/core/tests/Drupal/Tests/Core/Routing/RouteBuilderTest.php
index a9e33597dfdf..604b4a3c823a 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RouteBuilderTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RouteBuilderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RouteCompilerTest.php b/core/tests/Drupal/Tests/Core/Routing/RouteCompilerTest.php
index 2e73bdaeb8bb..304c1c61cc0d 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RouteCompilerTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RouteCompilerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\RouteCompiler;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php b/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php
index e7105d57fb54..c86fa3f11050 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RouteMatchTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\RouteMatch;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RouteMatchTestBase.php b/core/tests/Drupal/Tests/Core/Routing/RouteMatchTestBase.php
index e37fc698cf8e..3cb1866f85bb 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RouteMatchTestBase.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RouteMatchTestBase.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\RouteMatchInterface;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RoutePreloaderTest.php b/core/tests/Drupal/Tests/Core/Routing/RoutePreloaderTest.php
index 99de4c10ad5d..772a95679d02 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RoutePreloaderTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RoutePreloaderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Routing\RoutePreloader;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RouterTest.php b/core/tests/Drupal/Tests/Core/Routing/RouterTest.php
index a9f150aa2a79..cdee3b81c353 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RouterTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RouterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Path\CurrentPathStack;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RouterUnsupportedTest.php b/core/tests/Drupal/Tests/Core/Routing/RouterUnsupportedTest.php
index 222dbb8a1cbb..a0368ea80d02 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RouterUnsupportedTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RouterUnsupportedTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Path\CurrentPathStack;
diff --git a/core/tests/Drupal/Tests/Core/Routing/RoutingFixtures.php b/core/tests/Drupal/Tests/Core/Routing/RoutingFixtures.php
index f6fa1ebc40f2..d79506f7bad6 100644
--- a/core/tests/Drupal/Tests/Core/Routing/RoutingFixtures.php
+++ b/core/tests/Drupal/Tests/Core/Routing/RoutingFixtures.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Symfony\Component\Routing\Route;
diff --git a/core/tests/Drupal/Tests/Core/Routing/TestRouterInterface.php b/core/tests/Drupal/Tests/Core/Routing/TestRouterInterface.php
index 5caf5e0d4cee..c74f28d733bb 100644
--- a/core/tests/Drupal/Tests/Core/Routing/TestRouterInterface.php
+++ b/core/tests/Drupal/Tests/Core/Routing/TestRouterInterface.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Symfony\Component\Routing\Matcher\RequestMatcherInterface;
diff --git a/core/tests/Drupal/Tests/Core/Routing/TrustedRedirectResponseTest.php b/core/tests/Drupal/Tests/Core/Routing/TrustedRedirectResponseTest.php
index 17a5d5270078..53f977d427cf 100644
--- a/core/tests/Drupal/Tests/Core/Routing/TrustedRedirectResponseTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/TrustedRedirectResponseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTest.php b/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTest.php
index 228a06051f25..5d3dc75ad19f 100644
--- a/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Routing;
use Drupal\Core\Cache\Cache;
diff --git a/core/tests/Drupal/Tests/Core/Security/DoTrustedCallbackTraitTest.php b/core/tests/Drupal/Tests/Core/Security/DoTrustedCallbackTraitTest.php
index cab6e8d68d93..f16ad55421a0 100644
--- a/core/tests/Drupal/Tests/Core/Security/DoTrustedCallbackTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Security/DoTrustedCallbackTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Security;
use Drupal\Core\Security\Attribute\TrustedCallback;
diff --git a/core/tests/Drupal/Tests/Core/Security/RequestSanitizerTest.php b/core/tests/Drupal/Tests/Core/Security/RequestSanitizerTest.php
index 7cfc554cd3ec..1892b38e7220 100644
--- a/core/tests/Drupal/Tests/Core/Security/RequestSanitizerTest.php
+++ b/core/tests/Drupal/Tests/Core/Security/RequestSanitizerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Security;
use Drupal\Core\Security\RequestSanitizer;
diff --git a/core/tests/Drupal/Tests/Core/Serialization/YamlTest.php b/core/tests/Drupal/Tests/Core/Serialization/YamlTest.php
index 77cd534c94d7..70f488e2528e 100644
--- a/core/tests/Drupal/Tests/Core/Serialization/YamlTest.php
+++ b/core/tests/Drupal/Tests/Core/Serialization/YamlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Serialization;
use Drupal\Component\Serialization\SerializationInterface;
diff --git a/core/tests/Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php b/core/tests/Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php
index 1cb52b30cf2f..1eb14c8dabdf 100644
--- a/core/tests/Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Core\Cache\CacheableMetadata;
diff --git a/core/tests/Drupal/Tests/Core/Session/AccountProxyTest.php b/core/tests/Drupal/Tests/Core/Session/AccountProxyTest.php
index c3b23868ef50..770a732fcebb 100644
--- a/core/tests/Drupal/Tests/Core/Session/AccountProxyTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/AccountProxyTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Core\Session\AccountInterface;
diff --git a/core/tests/Drupal/Tests/Core/Session/AnonymousUserSessionTest.php b/core/tests/Drupal/Tests/Core/Session/AnonymousUserSessionTest.php
index 031de8244620..23631aa86ddf 100644
--- a/core/tests/Drupal/Tests/Core/Session/AnonymousUserSessionTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/AnonymousUserSessionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsItemTest.php b/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsItemTest.php
index a3d3cc1945fa..85cd51e2de58 100644
--- a/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsItemTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsItemTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Core\Session\CalculatedPermissionsItem;
diff --git a/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsTest.php b/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsTest.php
index ccb740b0b28f..d24d3bfc539d 100644
--- a/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Core\Session\CalculatedPermissions;
diff --git a/core/tests/Drupal/Tests/Core/Session/MetadataBagTest.php b/core/tests/Drupal/Tests/Core/Session/MetadataBagTest.php
index 12534749ad17..379b434379da 100644
--- a/core/tests/Drupal/Tests/Core/Session/MetadataBagTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/MetadataBagTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Core\Session\MetadataBag;
diff --git a/core/tests/Drupal/Tests/Core/Session/PermissionsHashGeneratorTest.php b/core/tests/Drupal/Tests/Core/Session/PermissionsHashGeneratorTest.php
index 182128863e44..79c191f59252 100644
--- a/core/tests/Drupal/Tests/Core/Session/PermissionsHashGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/PermissionsHashGeneratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Component\Utility\Crypt;
diff --git a/core/tests/Drupal/Tests/Core/Session/RefinableCalculatedPermissionsTest.php b/core/tests/Drupal/Tests/Core/Session/RefinableCalculatedPermissionsTest.php
index 5bd68a249a41..454a86741836 100644
--- a/core/tests/Drupal/Tests/Core/Session/RefinableCalculatedPermissionsTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/RefinableCalculatedPermissionsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Core\Cache\Context\CacheContextsManager;
diff --git a/core/tests/Drupal/Tests/Core/Session/SessionConfigurationTest.php b/core/tests/Drupal/Tests/Core/Session/SessionConfigurationTest.php
index 3c6508806ca0..1e2433a4a807 100644
--- a/core/tests/Drupal/Tests/Core/Session/SessionConfigurationTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/SessionConfigurationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Session/UserSessionTest.php b/core/tests/Drupal/Tests/Core/Session/UserSessionTest.php
index 7d4da73a7352..bc8965dc5905 100644
--- a/core/tests/Drupal/Tests/Core/Session/UserSessionTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/UserSessionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Core\Cache\MemoryCache\MemoryCache;
diff --git a/core/tests/Drupal/Tests/Core/Session/WriteSafeSessionHandlerTest.php b/core/tests/Drupal/Tests/Core/Session/WriteSafeSessionHandlerTest.php
index bcbdf5851d79..e44988f5f0c5 100644
--- a/core/tests/Drupal/Tests/Core/Session/WriteSafeSessionHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Session/WriteSafeSessionHandlerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Session;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Site/SettingsTest.php b/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
index bcabd35f1713..928a7768607c 100644
--- a/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
+++ b/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Site;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Core/StackMiddleware/NegotiationMiddlewareTest.php b/core/tests/Drupal/Tests/Core/StackMiddleware/NegotiationMiddlewareTest.php
index 5882a20ecbb6..8e5cc374e0d0 100644
--- a/core/tests/Drupal/Tests/Core/StackMiddleware/NegotiationMiddlewareTest.php
+++ b/core/tests/Drupal/Tests/Core/StackMiddleware/NegotiationMiddlewareTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StackMiddleware;
use Drupal\Core\StackMiddleware\NegotiationMiddleware;
diff --git a/core/tests/Drupal/Tests/Core/StackMiddleware/ReverseProxyMiddlewareTest.php b/core/tests/Drupal/Tests/Core/StackMiddleware/ReverseProxyMiddlewareTest.php
index cbea48f0dd86..244d32d617d8 100644
--- a/core/tests/Drupal/Tests/Core/StackMiddleware/ReverseProxyMiddlewareTest.php
+++ b/core/tests/Drupal/Tests/Core/StackMiddleware/ReverseProxyMiddlewareTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StackMiddleware;
use Drupal\Core\Site\Settings;
diff --git a/core/tests/Drupal/Tests/Core/StringTranslation/ByteSizeMarkupTest.php b/core/tests/Drupal/Tests/Core/StringTranslation/ByteSizeMarkupTest.php
index a0eb2e40c030..64a54741ea92 100644
--- a/core/tests/Drupal/Tests/Core/StringTranslation/ByteSizeMarkupTest.php
+++ b/core/tests/Drupal/Tests/Core/StringTranslation/ByteSizeMarkupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StringTranslation;
use Drupal\Component\Utility\Bytes;
diff --git a/core/tests/Drupal/Tests/Core/StringTranslation/PluralTranslatableMarkupTest.php b/core/tests/Drupal/Tests/Core/StringTranslation/PluralTranslatableMarkupTest.php
index f4b25bf0ef6a..738c85f9f1d0 100644
--- a/core/tests/Drupal/Tests/Core/StringTranslation/PluralTranslatableMarkupTest.php
+++ b/core/tests/Drupal/Tests/Core/StringTranslation/PluralTranslatableMarkupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StringTranslation;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php b/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php
index 6f693318633f..69cea9cae735 100644
--- a/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StringTranslation;
use Drupal\Core\StringTranslation\PluralTranslatableMarkup;
diff --git a/core/tests/Drupal/Tests/Core/StringTranslation/TranslatableMarkupTest.php b/core/tests/Drupal/Tests/Core/StringTranslation/TranslatableMarkupTest.php
index 8f210609686d..a9a1b363d275 100644
--- a/core/tests/Drupal/Tests/Core/StringTranslation/TranslatableMarkupTest.php
+++ b/core/tests/Drupal/Tests/Core/StringTranslation/TranslatableMarkupTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StringTranslation;
use Drupal\Component\Render\FormattableMarkup;
diff --git a/core/tests/Drupal/Tests/Core/StringTranslation/TranslationManagerTest.php b/core/tests/Drupal/Tests/Core/StringTranslation/TranslationManagerTest.php
index 8b2fd2d2907c..8e821c67ede8 100644
--- a/core/tests/Drupal/Tests/Core/StringTranslation/TranslationManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/StringTranslation/TranslationManagerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StringTranslation;
use Drupal\Component\Render\MarkupInterface;
diff --git a/core/tests/Drupal/Tests/Core/StringTranslation/TranslationWrapperTest.php b/core/tests/Drupal/Tests/Core/StringTranslation/TranslationWrapperTest.php
index 417d771247d4..cec3d9970002 100644
--- a/core/tests/Drupal/Tests/Core/StringTranslation/TranslationWrapperTest.php
+++ b/core/tests/Drupal/Tests/Core/StringTranslation/TranslationWrapperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\StringTranslation;
use Drupal\Core\StringTranslation\TranslatableMarkup;
diff --git a/core/tests/Drupal/Tests/Core/TempStore/PrivateTempStoreTest.php b/core/tests/Drupal/Tests/Core/TempStore/PrivateTempStoreTest.php
index c0959e11e93a..7825534f6704 100644
--- a/core/tests/Drupal/Tests/Core/TempStore/PrivateTempStoreTest.php
+++ b/core/tests/Drupal/Tests/Core/TempStore/PrivateTempStoreTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\TempStore;
use Drupal\Core\TempStore\Lock;
diff --git a/core/tests/Drupal/Tests/Core/TempStore/SharedTempStoreTest.php b/core/tests/Drupal/Tests/Core/TempStore/SharedTempStoreTest.php
index c4a67a85d154..9b39ff791139 100644
--- a/core/tests/Drupal/Tests/Core/TempStore/SharedTempStoreTest.php
+++ b/core/tests/Drupal/Tests/Core/TempStore/SharedTempStoreTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\TempStore;
use Drupal\Core\Session\AccountProxyInterface;
diff --git a/core/tests/Drupal/Tests/Core/Template/AttributeHelperTest.php b/core/tests/Drupal/Tests/Core/Template/AttributeHelperTest.php
index 7f564331b661..c6b5ec39cd51 100644
--- a/core/tests/Drupal/Tests/Core/Template/AttributeHelperTest.php
+++ b/core/tests/Drupal/Tests/Core/Template/AttributeHelperTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Template;
use Drupal\Core\Template\Attribute;
diff --git a/core/tests/Drupal/Tests/Core/Template/AttributeTest.php b/core/tests/Drupal/Tests/Core/Template/AttributeTest.php
index 65e30b502a64..6953c5bf25d0 100644
--- a/core/tests/Drupal/Tests/Core/Template/AttributeTest.php
+++ b/core/tests/Drupal/Tests/Core/Template/AttributeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Template;
use Drupal\Component\Render\MarkupInterface;
diff --git a/core/tests/Drupal/Tests/Core/Template/Loader/ThemeRegistryLoaderTest.php b/core/tests/Drupal/Tests/Core/Template/Loader/ThemeRegistryLoaderTest.php
index 9325eaecafe2..861d1d4c0fec 100644
--- a/core/tests/Drupal/Tests/Core/Template/Loader/ThemeRegistryLoaderTest.php
+++ b/core/tests/Drupal/Tests/Core/Template/Loader/ThemeRegistryLoaderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Template\Loader;
use Drupal\Core\Template\Loader\ThemeRegistryLoader;
diff --git a/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php b/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php
index 6acf1ceabb95..a86dc826df80 100644
--- a/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php
+++ b/core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Template;
// cspell:ignore mila
diff --git a/core/tests/Drupal/Tests/Core/Template/TwigSandboxTest.php b/core/tests/Drupal/Tests/Core/Template/TwigSandboxTest.php
index 318baa8635b6..bbd239406021 100644
--- a/core/tests/Drupal/Tests/Core/Template/TwigSandboxTest.php
+++ b/core/tests/Drupal/Tests/Core/Template/TwigSandboxTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Template;
use Drupal\Core\Template\Attribute;
diff --git a/core/tests/Drupal/Tests/Core/Test/AssertContentTraitTest.php b/core/tests/Drupal/Tests/Core/Test/AssertContentTraitTest.php
index 339f6577bc93..2b388facd23f 100644
--- a/core/tests/Drupal/Tests/Core/Test/AssertContentTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/AssertContentTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\KernelTests\AssertContentTrait;
diff --git a/core/tests/Drupal/Tests/Core/Test/BrowserTestBaseTest.php b/core/tests/Drupal/Tests/Core/Test/BrowserTestBaseTest.php
index 4ab3ac21ab21..80f325231ebc 100644
--- a/core/tests/Drupal/Tests/Core/Test/BrowserTestBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/BrowserTestBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Component\Utility\Random;
diff --git a/core/tests/Drupal/Tests/Core/Test/JUnitConverterTest.php b/core/tests/Drupal/Tests/Core/Test/JUnitConverterTest.php
index cfa287e672a4..94b4759e5b4f 100644
--- a/core/tests/Drupal/Tests/Core/Test/JUnitConverterTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/JUnitConverterTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Core\Test\JUnitConverter;
diff --git a/core/tests/Drupal/Tests/Core/Test/PhpUnitAutoloaderTest.php b/core/tests/Drupal/Tests/Core/Test/PhpUnitAutoloaderTest.php
index 919d588cc656..1620a8970c09 100644
--- a/core/tests/Drupal/Tests/Core/Test/PhpUnitAutoloaderTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/PhpUnitAutoloaderTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeIsolatedTest.php b/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeIsolatedTest.php
index edba3f56ba7e..92fa96d2a165 100644
--- a/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeIsolatedTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeIsolatedTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeRequiresTest.php b/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeRequiresTest.php
index 4b08f6b5b5c8..ccfd4a5d5fc9 100644
--- a/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeRequiresTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeRequiresTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeTest.php b/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeTest.php
index b8fc2823de4d..fe3d55182617 100644
--- a/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/PhpUnitBridgeTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Test/PhpUnitCliTest.php b/core/tests/Drupal/Tests/Core/Test/PhpUnitCliTest.php
index d44f90047575..3ace88234c60 100644
--- a/core/tests/Drupal/Tests/Core/Test/PhpUnitCliTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/PhpUnitCliTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Test/PhpUnitTestRunnerTest.php b/core/tests/Drupal/Tests/Core/Test/PhpUnitTestRunnerTest.php
index 4678d233de91..a1e6534a05a3 100644
--- a/core/tests/Drupal/Tests/Core/Test/PhpUnitTestRunnerTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/PhpUnitTestRunnerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Core\Test\PhpUnitTestRunner;
diff --git a/core/tests/Drupal/Tests/Core/Test/RunTests/TestFileParserTest.php b/core/tests/Drupal/Tests/Core/Test/RunTests/TestFileParserTest.php
index 3d8d38876185..f4059252c11b 100644
--- a/core/tests/Drupal/Tests/Core/Test/RunTests/TestFileParserTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/RunTests/TestFileParserTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test\RunTests;
use Drupal\Core\Test\RunTests\TestFileParser;
diff --git a/core/tests/Drupal/Tests/Core/Test/TestDatabaseTest.php b/core/tests/Drupal/Tests/Core/Test/TestDatabaseTest.php
index 1b7ea6f09ca8..8412a33c1d2e 100644
--- a/core/tests/Drupal/Tests/Core/Test/TestDatabaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/TestDatabaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Core\Test\TestDatabase;
diff --git a/core/tests/Drupal/Tests/Core/Test/TestDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Test/TestDiscoveryTest.php
index 9d9119f7b579..4c16fd7b11d8 100644
--- a/core/tests/Drupal/Tests/Core/Test/TestDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/TestDiscoveryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Composer\Autoload\ClassLoader;
diff --git a/core/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php b/core/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php
index b6ba4e389db9..e3affb3e7788 100644
--- a/core/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/TestSetupTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Core\Database\Database;
diff --git a/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php b/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php
index 8a82e033c4c7..2589132ca2f8 100644
--- a/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/TestSuiteBaseTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Tests\TestSuites\TestSuiteBase;
diff --git a/core/tests/Drupal/Tests/Core/Test/XdebugRequestTraitTest.php b/core/tests/Drupal/Tests/Core/Test/XdebugRequestTraitTest.php
index d11d6cab9caf..d2dc38ba58f4 100644
--- a/core/tests/Drupal/Tests/Core/Test/XdebugRequestTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Test/XdebugRequestTraitTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Test;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Theme/AjaxBasePageNegotiatorTest.php b/core/tests/Drupal/Tests/Core/Theme/AjaxBasePageNegotiatorTest.php
index be5985da8a70..06dea22a55c7 100644
--- a/core/tests/Drupal/Tests/Core/Theme/AjaxBasePageNegotiatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Theme/AjaxBasePageNegotiatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Theme;
use Drupal\Core\Access\CsrfTokenGenerator;
diff --git a/core/tests/Drupal/Tests/Core/Theme/CoreThemesAutoloadedForTests.php b/core/tests/Drupal/Tests/Core/Theme/CoreThemesAutoloadedForTests.php
index 51b51da3bbbe..dbd6ee688511 100644
--- a/core/tests/Drupal/Tests/Core/Theme/CoreThemesAutoloadedForTests.php
+++ b/core/tests/Drupal/Tests/Core/Theme/CoreThemesAutoloadedForTests.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Theme;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Theme/RegistryTest.php b/core/tests/Drupal/Tests/Core/Theme/RegistryTest.php
index e532525e1d78..abec03963a76 100644
--- a/core/tests/Drupal/Tests/Core/Theme/RegistryTest.php
+++ b/core/tests/Drupal/Tests/Core/Theme/RegistryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Theme;
use Drupal\Core\Extension\ModuleExtensionList;
diff --git a/core/tests/Drupal/Tests/Core/Theme/ThemeNegotiatorTest.php b/core/tests/Drupal/Tests/Core/Theme/ThemeNegotiatorTest.php
index dd28938836ef..43c11bb584a1 100644
--- a/core/tests/Drupal/Tests/Core/Theme/ThemeNegotiatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Theme/ThemeNegotiatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Theme;
use Drupal\Core\DependencyInjection\ClassResolver;
diff --git a/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php b/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php
index 8c7aa9252a02..a1f39fc1fc20 100644
--- a/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php
+++ b/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Transliteration;
use Drupal\Component\Utility\Random;
diff --git a/core/tests/Drupal/Tests/Core/TypedData/RecursiveContextualValidatorTest.php b/core/tests/Drupal/Tests/Core/TypedData/RecursiveContextualValidatorTest.php
index 30777f3e6c1c..46c8bd8b8eb2 100644
--- a/core/tests/Drupal/Tests/Core/TypedData/RecursiveContextualValidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/TypedData/RecursiveContextualValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\TypedData;
use Drupal\Core\Cache\NullBackend;
diff --git a/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php b/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php
index 066ad3a39b4e..6cd4baad895b 100644
--- a/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php
+++ b/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core;
use Drupal\Core\DependencyInjection\ContainerBuilder;
diff --git a/core/tests/Drupal/Tests/Core/Update/UpdateHookRegistryTest.php b/core/tests/Drupal/Tests/Core/Update/UpdateHookRegistryTest.php
index a220a0ecb053..9dcd1ad1d33d 100644
--- a/core/tests/Drupal/Tests/Core/Update/UpdateHookRegistryTest.php
+++ b/core/tests/Drupal/Tests/Core/Update/UpdateHookRegistryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Update;
use Drupal\Core\KeyValueStore\KeyValueFactoryInterface;
diff --git a/core/tests/Drupal/Tests/Core/Update/UpdateRegistryTest.php b/core/tests/Drupal/Tests/Core/Update/UpdateRegistryTest.php
index f1ff0e0ed9bf..7a2f4b070042 100644
--- a/core/tests/Drupal/Tests/Core/Update/UpdateRegistryTest.php
+++ b/core/tests/Drupal/Tests/Core/Update/UpdateRegistryTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Update;
use Drupal\Core\KeyValueStore\KeyValueStoreInterface;
diff --git a/core/tests/Drupal/Tests/Core/UrlTest.php b/core/tests/Drupal/Tests/Core/UrlTest.php
index 054c6c0f13bb..db86a0e6bbf3 100644
--- a/core/tests/Drupal/Tests/Core/UrlTest.php
+++ b/core/tests/Drupal/Tests/Core/UrlTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core;
use Drupal\Component\Utility\UrlHelper;
diff --git a/core/tests/Drupal/Tests/Core/Utility/CallableResolverTest.php b/core/tests/Drupal/Tests/Core/Utility/CallableResolverTest.php
index d0836ec62623..50a823b27c01 100644
--- a/core/tests/Drupal/Tests/Core/Utility/CallableResolverTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/CallableResolverTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Utility;
use Drupal\Core\DependencyInjection\ClassResolver;
diff --git a/core/tests/Drupal/Tests/Core/Utility/ErrorTest.php b/core/tests/Drupal/Tests/Core/Utility/ErrorTest.php
index aac9812ed53c..476a2de79c6a 100644
--- a/core/tests/Drupal/Tests/Core/Utility/ErrorTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/ErrorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Utility;
use Drupal\Tests\UnitTestCase;
diff --git a/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php b/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
index 189056d6f87f..33981539ddc9 100644
--- a/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Utility;
use Drupal\Component\Render\MarkupInterface;
diff --git a/core/tests/Drupal/Tests/Core/Utility/PhpRequirementsTest.php b/core/tests/Drupal/Tests/Core/Utility/PhpRequirementsTest.php
index dd13b4f15766..af857527c2cc 100644
--- a/core/tests/Drupal/Tests/Core/Utility/PhpRequirementsTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/PhpRequirementsTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Utility;
use Drupal\Core\Utility\PhpRequirements;
diff --git a/core/tests/Drupal/Tests/Core/Utility/TokenTest.php b/core/tests/Drupal/Tests/Core/Utility/TokenTest.php
index c731a00e1226..7b5864b7b556 100644
--- a/core/tests/Drupal/Tests/Core/Utility/TokenTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/TokenTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Utility;
use Drupal\Component\Utility\Html;
diff --git a/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php b/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php
index 8acd7ea36411..9f354d61b58e 100644
--- a/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/UnroutedUrlAssemblerTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Utility;
use Drupal\Core\GeneratedUrl;
diff --git a/core/tests/Drupal/Tests/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidatorTest.php b/core/tests/Drupal/Tests/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidatorTest.php
index eefca1c96cd1..0bbf9c024e4c 100644
--- a/core/tests/Drupal/Tests/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidatorTest.php
+++ b/core/tests/Drupal/Tests/Core/Validation/Plugin/Validation/Constraint/PrimitiveTypeConstraintValidatorTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Core\Validation\Plugin\Validation\Constraint;
use Drupal\Core\TypedData\DataDefinition;
diff --git a/core/tests/Drupal/Tests/PhpCs/SortTest.php b/core/tests/Drupal/Tests/PhpCs/SortTest.php
index 768c9340a5dd..41ffab51b387 100644
--- a/core/tests/Drupal/Tests/PhpCs/SortTest.php
+++ b/core/tests/Drupal/Tests/PhpCs/SortTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\PhpCs;
use PHPUnit\Framework\TestCase;
diff --git a/core/tests/Drupal/Tests/Scripts/TestSiteApplicationTest.php b/core/tests/Drupal/Tests/Scripts/TestSiteApplicationTest.php
index d15ef7946e83..3c91d151c036 100644
--- a/core/tests/Drupal/Tests/Scripts/TestSiteApplicationTest.php
+++ b/core/tests/Drupal/Tests/Scripts/TestSiteApplicationTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\Scripts;
use Drupal\Component\FileSystem\FileSystem;
diff --git a/core/themes/olivero/tests/src/Unit/OliveroHexToHslTest.php b/core/themes/olivero/tests/src/Unit/OliveroHexToHslTest.php
index 00f375c03fee..bf6b368907fe 100644
--- a/core/themes/olivero/tests/src/Unit/OliveroHexToHslTest.php
+++ b/core/themes/olivero/tests/src/Unit/OliveroHexToHslTest.php
@@ -1,5 +1,7 @@
<?php
+declare(strict_types=1);
+
namespace Drupal\Tests\olivero\Unit;
use Drupal\Tests\UnitTestCase;
--
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