performSelector在单元测试Objective-C中不起作用

Question

I am trying to make a unit test for my application but performSelector doesn't work. I've tried

[self performSelector:@selector(checkIDs:) withObject:nil];

and performSelectorOnMainThread but for some reason the method doesn't get called.

 [self checkIDs:nil] 

seems to work fine but performSelector doesn't. Getting this method to get called is not my main concern. The reason for me asking is because I have a bigger problem but I think the reason is because performSelector isn't working.

Am I missing something? Once again, this is for a Unit Test. Thanks!

Answer 1

dispatch_async(dispatch_get_main_queue(), ^{
  [self checkIDs:nil];
});

Try this it should work.