How write unit test for receiving nsnotification asynchronous?

问题

I call rest web servic with completion handler and if succeed I send NSNotification.

The problem is how to write unit test to assert that the notification is sent in case of success.

Any help will be appreciated.

回答1:

You can add an expectation for the notification:

expectationForNotification("BlaBlaNotification", object: nil) { (notification) -> Bool in

// call the method that fetches the data
sut.fetchData()  

waitForExpectationsWithTimeout(5, handler: nil)

But personally I would split this is two tests. One for the fetching of the data (tested using a stub) and one for the sending of the notification.

来源：https://stackoverflow.com/questions/34371335/how-write-unit-test-for-receiving-nsnotification-asynchronous