O'Reilly logo

Xcode 6 Start to Finish: iOS and OS X Development, Second Edition by Fritz Anderson

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

15. Unit Testing

All of your development so far on the passer-rating projects has left out one essential consideration:

How do you know it works?

Yes, you know generally what to expect, and you’ve used the Xcode debugger to verify that what the application does makes sense, but you don’t have the time, and most people don’t have the discipline, to monitor for every possible error. Ideally, for every change to your application, you’d verify that nothing broke. With a prompt warning, you can isolate the problem to the last thing you did.

This discipline of verifying each little part of your application is called unit testing. The meticulous search for errors is the sort of mind-numbing, repetitive, perfectionist task you bought a computer to do. ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required