media_test_ckeditor.module

<?php


/**
 * @file
 * Helper module for the Media Embed CKEditor plugin tests.
 */
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Core\Entity\EntityInterface;

/**
 * Implements hook_entity_view_alter().
 */
function media_test_ckeditor_entity_view_alter(&$build, EntityInterface $entity, EntityViewDisplayInterface $display) {
    // @see \Drupal\Tests\media\FunctionalJavascript\CKEditorIntegrationTest::testPreviewUsesDefaultThemeAndIsClientCacheable()
    $build['#attributes']['data-media-embed-test-active-theme'] = \Drupal::theme()->getActiveTheme()
        ->getName();
}

/**
 * Implements hook_preprocess_HOOK().
 */
function media_test_ckeditor_preprocess_media_embed_error(&$variables) {
    $variables['attributes']['class'][] = 'this-error-message-is-themeable';
}