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