MediaLinkRelationsTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\media\Kernel;

use Drupal\media\Entity\Media;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests link relationships for media items.
 */
class MediaLinkRelationsTest extends MediaKernelTestBase {
  
  /**
   * Tests that all link relationships for Media exist.
   */
  public function testExistLinkRelationships() : void {
    /** @var \Drupal\Core\Http\LinkRelationTypeManager $link_relation_type_manager */
    $link_relation_type_manager = $this->container
      ->get('plugin.manager.link_relation_type');
    $media = Media::create([
      'bundle' => $this->testMediaType
        ->id(),
    ]);
    $media->save();
    foreach ($media->uriRelationships() as $relation_name) {
      $this->assertTrue($link_relation_type_manager->hasDefinition($relation_name), "Link relationship '{$relation_name}' for a media item");
    }
  }

}