namespace Drupal\Tests\Component\Serialization;
use Drupal\Component\Serialization\Json;
-use Drupal\Tests\UnitTestCase;
+use PHPUnit\Framework\TestCase;
/**
* @coversDefaultClass \Drupal\Component\Serialization\Json
* @group Serialization
*/
-class JsonTest extends UnitTestCase {
+class JsonTest extends TestCase {
/**
* A test string with the full ASCII table.