use Drupal\Component\Render\PlainTextOutput;
use Drupal\Component\Utility\SafeMarkup;
use Drupal\Component\Render\MarkupInterface;
-use Drupal\Tests\UnitTestCase;
+use PHPUnit\Framework\TestCase;
/**
* @coversDefaultClass \Drupal\Component\Render\PlainTextOutput
* @group Utility
*/
-class PlainTextOutputTest extends UnitTestCase {
+class PlainTextOutputTest extends TestCase {
/**
* Tests ::renderFromHtml().