Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /home/hiphopdi/public_html/wiki2/extensions/Math/tests/phpunit/MathRestbaseInterfaceTest.php:19 Stack trace: #0 {main} thrown in /home/hiphopdi/public_html/wiki2/extensions/Math/tests/phpunit/MathRestbaseInterfaceTest.php on line 19