GUT Instinct

Article Summary: 

Whether or not a unit test is considered good is not simply about what it tests: It is also very much about "how" it tests. Is the test readable and maintainable? Does it define the expected behavior or merely assume it? To be sustainable, the style of a unit test is just as important as the style of any other code. Perhaps a little surprisingly, the most commonly favored test partitioning style does not meet these expectations.