Dixie
Dixie is an open source Objective-C testing framework for altering object behaviours. Test your app through creating chaos in the inner systems. The primary goal of Dixie is to provide a set of tools, which the developers can test their code with. Behind the goal is the ideology of “do not always expect the best”. You can read more about this here.
Via iOS Dev Weekly:
I found that the best way to think about Dixie was to see it as like a mocking framework that you enable globally inside your app rather than only in your test target. This allows various parts of your app to be replaced for integration tests, amongst other things.
