Page_Tester::executeTest PHP Method

    public function executeTest($test_obj, $test_func, $input)
    {
        if ($input === null) {
            $input = array();
        }
        return call_user_func_array(array($test_obj, $test_func), $input);
    }

 function executeTest($test_obj, $test_func, $input)
 {
     try {
         return parent::executeTest($test_obj, $test_func, $input);
     } catch (Exception_ValidityCheck $e) {
         return $e->getField() . ': ' . $e->getMessage();
     }
 }