管理XCTests上的多个异步操作

我正面临XCTestCase对象中异步操作的问题。 我从一系列 expectation-waitForExpectation ,有时将期望实例作为方法参数传递,以使其由异步操作完成块实现。 现在我改变了方法,因为我看不到以前编写的糟糕代码,我尝试了这种方式:

- (void)testThatItGoesToTheRightSport
{
  if (! appDelegateInstance.firstTimeLoaded)
  {
     [self __waitForLoadingAppAndDo:^(BOOL launched)
     {
       if (launched)
       {
          [self __goToLiveWithHandler:^(BOOL success) {
            if (success)
            {
              [self __goToLiveSport:[NSNumber numberWithUnsignedInteger:kDefaultSportCode]
                            handler:^(BOOL success) {
               if (! success)
               {
                 XCTFail(@"Test failed");
               }
             }];
           }
          }];
       }
     }];
  }
  else
  {
    [self __goToLiveWithHandler:^(BOOL success) {
      if (success)
      {
        [self __goToLiveSport:[NSNumber numberWithUnsignedInteger:kDefaultSportCode]
                      handler:^(BOOL success) {
          if (! success)
          {
            XCTFail(@"Test failed");
          }
        }];
      }
    }];
  }
}

具有 __waitForLoadingAppAndDo: 方法实现为

- (void)__waitForLoadingAppAndDo:(void (^)(BOOL launched))afterBlock
{
  if (! afterBlock)
      XCTFail(@"No afterBlock");

  XCTestExpectation *dataEx = [self expectationForNotification:NOTIFICATION_HOME_LOADED
                                                        object:nil
                                                       handler:^BOOL(NSNotification *notification) {
                                                           [dataEx fulfill];
                                                           return YES;
                                                       }];
  [self waitForExpectationsWithTimeout:SOCKOPT_TIMEOUT handler:^(NSError *error)
   {
       if (error)
       {
           XCTFail(@"No data received. %@", [error localizedDescription]);
       }
       else
       {
         dispatch_async(dispatch_get_main_queue(), ^{
           afterBlock(YES);
         });
       }
   }];
}

另一个 __ 方法与之类似。显然,现在 testThat 方法未等待方法完成处理程序。我该如何改进它,我该如何 testThat测试 方法等待完成?是 XCTestExpectation 在路上?(不要告诉我哦)

添加: 那么,这是唯一的方法吗?

- (void)testThatItGoesToTheRightSport
    {
       if (! appDelegateInstance.firstTimeLoaded)
       {
         XCTestExpectation *waitingLoading = [self expectationWithDescription:@"loadingApp"];
         [self waitForExpectationsWithTimeout:SOCKOPT_TIMEOUT handler:^(NSError *error) {
           if (error)
           {
             XCTFail(@"After block was not called.");
           }
         }];
         [self __waitForLoadingAppAndDo:^(BOOL launched)
         {
           if (launched)
           {
              [self __goToLiveWithHandler:^(BOOL success) {
                if (success)
                {
                  [waitingLoading fulfill];
                  [...]
                }
              }];
           }
          }];

添加-2 :

我试过了

__block NSError *internalError = nil;
__block XCTestExpectation *finishedTest = [self expectationWithDescription:@"finishedTest"];
dispatch_group_t asyncGroup = dispatch_group_create();

if (! appDelegateInstance.firstTimeLoaded)
{
  dispatch_group_enter(asyncGroup);
  [self __waitForLoadingAppAndDo:^(BOOL launched) {
    if (! launched)
    {
      internalError = [TestUtilities notLoadedAppError];
    }
    dispatch_group_leave(asyncGroup);
  }];

  dispatch_group_enter(asyncGroup);
  [self __goToLiveWithHandler:^(BOOL success) {
    if (! success)
    {
      internalError = [NSError errorWithDomain:@"goLive"
                                          code:-1
                                      userInfo:@{NSLocalizedDescriptionKey : @"Errore apertura Live"}];
    }
    dispatch_group_leave(asyncGroup);
  }];

  dispatch_group_notify(asyncGroup, dispatch_get_main_queue(), ^{
    [finishedTest fulfill];
  });

但这些组被称为异步组,无需等待完成块。 例如:我期待着 操作1 首先开始,在 操作1 完井区块 操作2 将启动。

添加-3 : 我用了不同的方法 dispatch_semaphore 。我喜欢它,但有一件东西我会替换掉。如果我要等待信号,我会阻塞主线程,所以我必须 dispatch_async 这个 wait 命令如下:

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{
  dispatch_semaphore_wait(loadedApp, DISPATCH_TIME_FOREVER);
  dispatch_async(dispatch_get_main_queue(), ^{
    [self __goToLiveWithHandler:^(BOOL success) {
      if (success)
      {
        [...]
      }
    }];
  });
});

有没有办法避免这种情况?