Fatal error: Uncaught Error: Class "MediaWikiUnitTestCase" not found in /var/www/html/w/tests/phpunit/unit/includes/Mail/ConfirmEmail/PlaintextConfirmEmailBuilderTest.php:18 Stack trace: #0 {main} thrown in /var/www/html/w/tests/phpunit/unit/includes/Mail/ConfirmEmail/PlaintextConfirmEmailBuilderTest.php on line 18