Object Mapping with RestKit not using URL connection

ObjectMapping

NSHTTPURLResponse *httpurlResponse = [[NSHTTPURLResponse alloc] initWithURL:[NSURL URLWithString:@"/hoge/"]
                                                                 statusCode:200
                                                                HTTPVersion:nil
                                                               headerFields:@{}];
RKResponseMapperOperation *responseMapperOperation = [[RKResponseMapperOperation alloc] initWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"/hoge/"]]
                                                                                               response:httpurlResponse
                                                                                                   data:[NSData new]
                                                                                    responseDescriptors:@[
                                                                                            [RKResponseDescriptor responseDescriptorWithMapping:responseMapping
                                                                                                                                         method:RKRequestMethodGET
                                                                                                                                    pathPattern:@"/hoge/"
                                                                                                                                        keyPath:nil
                                                                                                                                    statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]
                                                                                    ]];
RKMapperOperation *mapperOperation = [[RKMapperOperation alloc] initWithRepresentation:@{@"key": @"value"}
                                                                    mappingsDictionary:responseMapperOperation.responseMappingsDictionary];
[mapperOperation start];
id object = [mapperOperation.mappingResult.array firstObject];