Chapter 11

1. ruby -wc filename.
2. In general, using behavior-driven development is a waste of time if the programmers are writing the specifications, since the programmers could more easily write the executable test code directly, compared to writing the specifications and maintaining the code that converts the specification to executable test code.
3. Not always, it depends on the type of abstraction. Moving setup code to methods and using enumerables to define multiple test methods are both good uses of abstractions in test code.
4. Model testing is in general more reliable and less likely to result in false positives and false negatives compared to unit testing.
5. Nothing. But less than 100% code coverage means some code is not being tested at all.