Issue #3422495 by mondrake, smustgrave: Change...

Issue #3422495 by mondrake, smustgrave: Change DefaultConfigTest::moduleListDataProvider and helpers to static

core/tests/Drupal/KernelTests/Config/DefaultConfigTest.php

@@ -49,7 +49,7 @@ class DefaultConfigTest extends KernelTestBase {
    *
    * @dataProvider moduleListDataProvider
    */
-  public function testModuleConfig($module) {
+  public function testModuleConfig(string $module): void {
     $this->assertExtensionConfig($module, 'module');
   }
 
@@ -171,8 +171,8 @@ public static function themeListDataProvider() {
    *   An array of module names to test, with both key and value being the name
    *   of the module.
    */
-  public function moduleListDataProvider() {
-    $modules_keyed = $this->coreModuleListDataProvider();
+  public static function moduleListDataProvider(): array {
+    $modules_keyed = self::coreModuleListDataProvider();
 
     // Add a deprecated module with config.
     $modules_keyed['deprecated_module'] = ['deprecated_module'];

core/tests/Drupal/KernelTests/FileSystemModuleDiscoveryDataProviderTrait.php

@@ -13,7 +13,7 @@ trait FileSystemModuleDiscoveryDataProviderTrait {
    * @return array
    *   An array of module names to test.
    */
-  public function coreModuleListDataProvider() {
+  public static function coreModuleListDataProvider(): array {
     $prefix = dirname(__DIR__, 3) . DIRECTORY_SEPARATOR . 'modules';
     $module_dirs = array_keys(iterator_to_array(new \FilesystemIterator($prefix)));
     $module_names = array_map(function ($path) use ($prefix) {