Issue #3407793 by mstrelan: Add declare(strict_types=1) to all miscellaneous test classes

    // Display the 'combined form'.

    $this->drupalGet("test-entity-constraints/nested/{$entity_1->id()}/{$entity_2->id()}");

    $assert_session->hiddenFieldValueEquals('entity_2[changed]', REQUEST_TIME);

    $assert_session->hiddenFieldValueEquals('entity_2[changed]', (string) REQUEST_TIME);

    // Submit the form and check that the entities are updated accordingly.

    $assert_session->hiddenFieldExists('entity_2[changed]')

<?php

declare(strict_types=1);

namespace Drupal\system\Tests\Routing;

use Drupal\path_alias\AliasManagerInterface;

<?php

declare(strict_types=1);

namespace Drupal\system\Tests\Routing;

use Symfony\Component\HttpFoundation\Request;

<?php

declare(strict_types=1);

namespace Drupal\TestSite\Commands;

use Drupal\Core\Config\ConfigImporter;

<?php

declare(strict_types=1);

namespace Drupal\TestSite\Commands;

use Drupal\Core\Test\TestDatabase;