Warning: require_once(PHPUnit/Runner/Version.php): failed to open stream: No such file or directory in /var/www/yii/framework/test/CTestCase.php on line 12

Fatal error: require_once(): Failed opening required 'PHPUnit/Runner/Version.php' (include_path='.:/usr/share/php') in /var/www/yii/framework/test/CTestCase.php on line 12