use Drupal\aggregator\Entity\Feed;
use Drupal\aggregator\Entity\Item;
use Drupal\Core\Cache\CacheBackendInterface;
-use Drupal\system\Tests\Entity\EntityCacheTagsTestBase;
+use Drupal\Tests\system\Functional\Entity\EntityCacheTagsTestBase;
use Drupal\user\Entity\Role;
use Drupal\user\RoleInterface;