class MediaLibraryImageStyleAccessTest

class MediaLibraryImageStyleAccessTest extends BrowserTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'media_library',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests that users can't delete the 'media_library' image style.
   */
  public function testMediaLibraryImageStyleAccess() : void {
    // Create a user who can manage the image styles.
    $user = $this->createUser([
      'access administration pages',
      'administer image styles',
    ]);
    // The user should be able to delete the 'medium' image style, but not the
    // 'media_library' image style.
    $medium = ImageStyle::load('medium');
    $this->assertTrue($medium->access('delete', $user));
    $mediaLibrary = ImageStyle::load('media_library');
    $this->assertFalse($mediaLibrary->access('delete', $user));
    $this->drupalLogin($user);
    $this->drupalGet($medium->toUrl('delete-form'));
    $this->assertSession()
      ->statusCodeEquals(200);
    $this->drupalGet($mediaLibrary->toUrl('delete-form'));
    $this->assertSession()
      ->statusCodeEquals(403);
  }

}