Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/soh-works/www/websoket-sample/vendor/cboden/ratchet/tests/unit/Session/Serialize/PhpHandlerTest.php:8 Stack trace: #0 {main} thrown in /home/soh-works/www/websoket-sample/vendor/cboden/ratchet/tests/unit/Session/Serialize/PhpHandlerTest.php on line 8