Unit Testing with OCUnit (3 tags)
Are you sure your code works -- all of it? If you make a change in one place, can you be sure you haven't broken something else? Testing frameworks can help you make sure. In this article, Jim Menard shows you how OCUnit can become part of the solution.
Test-Driven Development in Python (2 tags)
The goal of test-driven development is not to produce tests; they're merely a helpful by-product. The real goal is to produce elegant, working code. Jason Diamond demonstrates how test-driven development works using Python and PyUnit to create a sample event-tracking utility.