use Drupal\Component\FileCache\FileCacheFactory;
use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\DependencyInjection\YamlFileLoader;
+use Drupal\Tests\UnitTestCase;
use org\bovigo\vfs\vfsStream;
/**
* @coversDefaultClass \Drupal\Core\DependencyInjection\YamlFileLoader
* @group DependencyInjection
*/
-class YamlFileLoaderTest extends \PHPUnit_Framework_TestCase {
+class YamlFileLoaderTest extends UnitTestCase {
/**
* {@inheritdoc}