Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/magento/html/app/code/Aheadworks/Ajaxcartpro/Test/Unit/Controller/Cart/AddTest.php:40 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/Aheadworks/Ajaxcartpro/Test/Unit/Controller/Cart/AddTest.php on line 40