Issue #2581799 by jeroent, smustgrave, mstrelan, dcam: Add test coverage for GotoAction

<?php

declare(strict_types=1);

namespace Drupal\KernelTests\Core\Action;

use Drupal\Core\Action\Plugin\Action\GotoAction;

use Drupal\Core\Entity\EntityInterface;

use Drupal\Core\Url;

use Drupal\KernelTests\KernelTestBase;

use Drupal\system\Entity\Action;

use PHPUnit\Framework\Attributes\CoversClass;

use PHPUnit\Framework\Attributes\DataProvider;

use PHPUnit\Framework\Attributes\Group;

use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

use Symfony\Component\HttpFoundation\Request;

/**

 * Tests Goto Action.

 */

#[CoversClass(GotoAction::class)]

#[Group('Action')]

#[RunTestsInSeparateProcesses]

class GotoActionTest extends KernelTestBase {

  /**

   * {@inheritdoc}

   */

  protected static $modules = ['system'];

  /**

   * Tests goto action.

   */

  #[DataProvider('providerGotoAction')]

  public function testGotoAction(string $url, string $expected): void {

    $entity = $this->createMock(EntityInterface::class);

    $action = Action::create([

      'id' => 'goto',

      'plugin' => 'action_goto_action',

      'configuration' => ['url' => $url],

    ]);

    $action->save();

    $action->execute([$entity]);

    // Simulate a request to trigger the redirect.

    $request = Request::create('');

    $response = $this->container->get('http_kernel')->handle($request);

    $location = $response->headers->get('Location');

    // Convert to relative path.

    $base = rtrim(Url::fromRoute('<front>')->setAbsolute()->toString(), '/');

    if (str_starts_with($location, $base)) {

      $location = substr($location, strlen($base));

    }

    $this->assertSame(302, $response->getStatusCode());

    $this->assertSame($expected, $location);

  }

  /**

   * Data provider for ::testGotoAction().

   */

  public static function providerGotoAction(): array {

    return [

      '<front>' => ['<front>', '/'],

      'empty string' => ['', '/'],

      'internal path' => ['/user', '/user'],

      'internal path with query and fragment' => ['/user?foo=bar#baz', '/user?foo=bar#baz'],

      'external URL' => ['https://example.com', 'https://example.com'],

    ];

  }

}