Test-Driven Java Development - Second Edition

Helper classes

Imagine that a colleague of yours started working on this project. He's a good programmer and a TDD practitioner, and you trust his abilities to have good test code coverage. In other words, you can rely on his work. However, that colleague did not finish the application before he left for his vacations and it's up to you to continue where he stopped. He created all the helper classes: Direction, Location, Planet, and Point. You'll notice that the corresponding test classes are there as well. They have the same name as the class they're testing with the Spec suffix (that is, DirectionSpec). The reason for using this suffix is to make clear that tests are not only intended to validate the code, but also to serve as an executable ...