Fatal error: Uncaught Error: Class "MediaWikiUnitTestCase" not found in /var/www/html/w/tests/phpunit/unit/includes/EditPage/Constraint/NewSectionMissingSubjectConstraintTest.php:17 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/unit/includes/EditPage/Constraint/NewSectionMissingSubjectConstraintTest.php on line 17