Fatal error: Uncaught Error: Class "MediaWikiUnitTestCase" not found in /var/www/html/orian-wiki/extensions/Echo/tests/phpunit/unit/Mapper/AbstractMapperTest.php:8 Stack trace: #0 {main} thrown in /var/www/html/orian-wiki/extensions/Echo/tests/phpunit/unit/Mapper/AbstractMapperTest.php on line 8