????????????梅???
????Stub??
????????????婊�??stub?????????????????????梅????????魏?????婕�??????
???????????????榉�????????????貌?????谩????????????????????????????stub??????????梅???????????????????????????
    context(@"when select count of termStudyInfo"?? ^{
       
        beforeEach(^{
        // stub????魏蔚??????[EduTermStudyInfo countOfTermStudyInfoWithLearnerId:]??????????3??
        // ????????[EduTermStudyInfo countOfTermStudyInfoWithLearnerId:]????????????????
           [EduTermStudyInfo stub:@selector(countOfTermStudyInfoWithLearnerId:) andReturn:theValue(3)];
        });
       
        it(@"the count should always be 3"?? ^{
            [[theValue([EduTermStudyInfo countOfTermStudyInfoWithLearnerId:110]) should] equal:theValue(3)];
        });
    });
  ????????????????it?????尾??stub????????
  Mock??
  ??????渭??????????????????????????mock??????????????????????mock?????????????????????????????
// ????nullMock??????????????XXSectionDataSource?????????XXSectionDataSource????魏???????????????????
XXSectionDataSource *mockLiveSection = [XXSectionDataSource nullMock];
// ?????[mockLiveSection viewType]???????XXViewTypeLive???????stub??mock?????viewType????
    [mockLiveSection stub:@selector(viewType) andReturn:theValue(XXViewTypeLive)];
   
    // ????????nullMock?????????mock??????????mock?????????mock?????????stub????????????crash
    XXCellDataSource *mockCell = [XXCellDataSource nullMock];
    [mockCell stub:@selector(viewType) andReturn:theValue(XXViewTypeLive)];
    [mockLiveSection stub:@selector(cellDataSources) andReturn:@[mockCell?? mockCell]];
  ???????
  ??????????????????????胁???????卸?????????????????????????expectFutureValue+shouldEventually ?婊�????????should??
  expectFutureValue+shouldEventually?????????block??????1s??????????????????????????????????????????????????
  ????????慰???https://github.com/kiwi-bdd/Kiwi/issues/532
describe(@"XXViewModel"?? ^{

    context(@"when request lern data"?? ^{
        __block XXViewModel *viewModel = nil;
        __block BOOL isExecuteSuccess = NO;
       
        beforeEach(^{
            viewModel = [[XXViewModel alloc] init];
            [viewModel requestLearnData:^{
                isExecuteSuccess = YES;
            } failure:nil target:self];
        });

        it(@"should eventually call successBlock"?? ^{
            //???????????卸??????????????
            [[expectFutureValue(theValue(isExecuteSuccess)) shouldEventually] beYes];
        });
}????
  OHHTTPStubs???
  ????NSURLProtocol???????????stub????stub?????????????????????????????????????????Charles??local map?????
  ???????????????????????????????????????????????????????????????????????y???????API??????小?
  ?梅????????beforeEach?????????stub??
// ????url?邪???learn/v1????????????????learn_v1.json????械?????
[OHHTTPStubs stubRequestsPassingTest:^BOOL(NSURLRequest * _Nonnull request) {
        return [request.URL.absoluteString containsString:@"learn/v1"];
    } withStubResponse:^OHHTTPStubsResponse * _Nonnull(NSURLRequest * _Nonnull request) {
        NSString *filePath = OHPathForFile(@"learn_v1.json"?? self.class);
        NSData *data = [NSData dataWithContentsOfFile:filePath];
        return [OHHTTPStubsResponse responseWithData:data statusCode:kK12TestHTTPSuccessCode headers:nil];
        // ??????????????????NSError
        //return [OHHTTPStubsResponse responseWithError:[NSError errorWithDomain:@"kK12TestSystemErrorDomain" code:-1 userInfo:nil]];
    }];
  ????????
  ????????Kiwi??EXC_BAD_ACCESS??????????Kiwi?master?掳姹�??https://github.com/kiwi-bdd/Kiwi/pull/649
  ????????????????????????????????pch??????????
  ??RACBacktrace??RACBacktraceBlock??debug?????EXC_BAD_ACCESS???????????ReactiveCocoa?姹�??