Eris\Quantifier\Evaluation::execute PHP Method

    public function execute()
    {
        try {
            call_user_func_array($this->assertion, $this->values->unbox());
        } catch (\PHPUnit_Framework_AssertionFailedError $e) {
            call_user_func($this->onFailure, $this->values, $e);
            return;
        }
        call_user_func($this->onSuccess, $this->values);
    }