Method invocation not tested comprehensively

[jerryjohnjacob]

Let's take a look at this spec. It tests a method whose sole responsibility is to invoke another method. But the test does not check that part of it. I can change the method to return 1 at the end no matter what and the tests would still pass. A simple fix here can take care of that. There are a couple of other places where this has happened. I think this example should help you figure the rest out.