Fatal error: Uncaught Error: Class "WP_UnitTestCase" not found in /usr/local/www/wordpress/wp-content/plugins/stop-xmlrpc-attack/tests/test-stop_xmlrpc_attack.php:3 Stack trace: #0 {main} thrown in /usr/local/www/wordpress/wp-content/plugins/stop-xmlrpc-attack/tests/test-stop_xmlrpc_attack.php on line 3