Phockito::spy_instance PHP Method

    static function spy_instance($class)
    {
        $spyClass = self::spy_class($class);
        $res = new $spyClass();
        // Find the constructor args
        $constructor_args = func_get_args();
        array_shift($constructor_args);
        // Call the constructor (maybe)
        if (count($constructor_args) != 1 || $constructor_args[0] !== self::DONT_CALL_CONSTRUCTOR) {
            $constructor = array($res, '__phockito_parent_construct');
            if (!is_callable($constructor)) {
                if ($constructor_args) {
                    user_error("Tried to create spy of {$class} with constructor args, but that {$class} doesn't have a constructor defined", E_USER_ERROR);
                }
            } else {
                call_user_func_array($constructor, $constructor_args);
            }
        }
        // And done
        return $res;
    }