Why does a false assertion in async test in GHUnit crash the app instead of just failing the test?

Question

This question has very few views and no answers yet. If you have a suggestion what to change about this question to get more eyeballs, I\'d be happy to hear them. Ch

Answer 1

Looking at the header files for GHUnit, it looks like that may be what is supposed to happen with your code. A subclass of GHUnit could override this method:

// Override any exceptions; By default exceptions are raised, causing a test failure
- (void)failWithException:(NSException *)exception { }

To not throw exceptions, but an easier solution is to use the GHAssertTrueNoThrow instead of GHAssertTrue macro.

Answer 2

Look up your Xcode Breakpoints navigator,delete all exception breakpoints,That's all !!!

Answer 3

I think this question should be rather, "how to test methods with blocks in GHUnit"?

And the answer can be found here: http://samwize.com/2012/11/25/create-async-test-with-ghunit/

Answer 4

I've been digging for a week to find a solution to this when I finally caught a break. It's been a bit weird having next to no views on a bounty question and no one cared to attempt an answer. I was thinking the question might be stupid, but there were no downvotes and no one cared to correct it either. Has StackOverflow become that saturated?

A solution.

The trick is to not assert anything from the callback method, but put the assertions back in the original test. The wait method is actually blocking the thread, which I didn't think of before. If your async callback receives any values, just store them in an ivar or property and then make assertions based on them in your original test method.

This takes care of the assertions not causing any crashes.

- (void)testAsyncOperation
{
    [self prepare];

    MyOperation *op = [[[MyOperation alloc] init] autorelease];

    op.delegate = self; // delegate method is called on the main thread.

    [self.operationQueue addOperation:op];

    // The `waitfForStatus:timeout` method will block this thread.
    [self waitForStatus:kGHUnitWaitStatusSuccess timeout:1.0];

    // And after the callback finishes, it continues here.
    GHAssertTrue(NO, @"This triggers a failed test without anything crashing.");
}

- (void)didFinishAsyncOperation
{
    [self notify:kGHUnitWaitStatusSuccess forSelector:@selector(testAsyncOperation)];
}