Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /home/mideydfj/wiki.laconio.me/extensions/Math/tests/phpunit/MathValidatorTest.php:14 Stack trace: #0 {main} thrown in /home/mideydfj/wiki.laconio.me/extensions/Math/tests/phpunit/MathValidatorTest.php on line 14