Async test, why codes in callback block cannot be called?

[Banzuofan]

I am writing async test codes as the guide at https://github.com/specta/expecta, but i met a question, when run the test method, it seems that codes in callback block didn't run, i don't know what happen to my code, or something i missed. my code as follow:

- (void)testAsyncNetworkTask
{
    //XCTestExpectation *expecta = [self expectationWithDescription:@"asyncTask_login"];
    [Expecta setAsynchronousTestTimeout:15.0];

    __block id reponseData = nil;
    __block id error = nil;
    NSURLRequest *_request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]];
    [NSURLConnection sendAsynchronousRequest:_request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

        NSLog(@"%@", reponseData);
        reponseData = data;
        error = connectionError;

        //[expecta fulfill];
    }];

    XCTAssertNil(reponseData);
    expect(reponseData).willNot.beNil;
    expect(error).will.beNil;

//    [self waitForExpectationsWithTimeout:15 handler:^(NSError *error) {
//        //NSLog(@"%s, time out", __FUNCTION__);
//    }];
}

When I used XCTest to test my codes, it can run the codes in callback block, and i can see logs in console. I refered to AFNetworking demo containing expecta when i wrote my test codes.
Hope you can understand what I said!

[orta]

Your test structure may work better this way using waitUntil

[StatusReport]

You're forgetting the parenthesis after the beNil (yes, it's troubling that the code compiles without them), so your spec probably terminates early before the callback is being called.

Try with:

expect(reponseData).willNot.beNil();
expect(error).will.beNil();

[Banzuofan]

Thanks for your replies, @StatusReport it works as your codes, i feel so shame for my carelessness