iOS Unit Testing by Example

Test Code-Based Push Navigation

We’ll start our testing with code-based navigation, taking push navigation first. Since all our navigation is triggered by button taps, follow ​Test Button Taps​ to add a test suite ViewControllerTests with a test named test_tappingCodePushButton_shouldPushCodeNextViewController. This also means editing Main.storyboard to give the view controller a Storyboard ID. Also follow ​Make a Test Helper for Button Taps​ to add the tap(_:) helper. Have the test tap the codePushButton outlet. Run the tests, which should pass so far.

The @IBAction connected to codePushButton tells the view controller’s navigationController to do a push. But since the test instantiates ViewController in isolation, it has no navigation controller ...