Fatal error: Uncaught Error: Class "MediaWikiIntegrationTestCase" not found in /home/hiphopdi/public_html/wiki2/extensions/Math/tests/phpunit/MathValidatorTest.php:14 Stack trace: #0 {main} thrown in /home/hiphopdi/public_html/wiki2/extensions/Math/tests/phpunit/MathValidatorTest.php on line 14