Fatal error: Uncaught Error: Class "MediaWikiUnitTestCase" not found in C:\xampp\htdocs\extensions\DiscussionTools\tests\phpunit\unit\CommentUtilsTest.php:13 Stack trace: #0 {main} thrown in C:\xampp\htdocs\extensions\DiscussionTools\tests\phpunit\unit\CommentUtilsTest.php on line 13