PHPSpec\Matcher\ObjectStateMatcher::positiveMatch PHP Метод

    public function positiveMatch($name, $subject, array $arguments)
    {
        preg_match(self::$regex, $name, $matches);
        $method = ('be' === $matches[1] ? 'is' : 'has') . ucfirst($matches[2]);
        $callable = array($subject, $method);
        if (!method_exists($subject, $method)) {
            throw new MethodNotFoundException(sprintf('Method %s not found.', $this->presenter->presentValue($callable)), $subject, $method, $arguments);
        }
        if (true !== ($result = call_user_func_array($callable, $arguments))) {
            throw $this->getFailureExceptionFor($callable, true, $result);
        }
    }