Fatal error: Uncaught Error: Class "MediaWikiUnitTestCase" not found in /var/www/html/orian-wiki/extensions/DiscussionTools/tests/phpunit/unit/CommentUtilsTest.php:13 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/extensions/DiscussionTools/tests/phpunit/unit/CommentUtilsTest.php on line 13