Every unit test ninja faces troubles whenever he wants to test some real class functionality. Have you ever invoked toHtml() method of some block or beforeLoad() method of any collection? If you want to do it, you will need to mock a lot of classes that depend on other classes and so on. You would need to mock all of them, which would take a lot of time and effort. In a long run, you may blow up deadlines and it would really suck. Yes, you can try to change your testing strategy to avoid invoking such methods. But what if you still need to test them? I’m going to show you how I handled this problem.