IBM's developerWorks has published my latest article, Testing legacy code. This article elaborates a strategey for developing a unit test suite for code bases that have never had one. This is one of three topics that invariably comes up in Q&A when I talk about JUnit, so I thought it was worrth an article. Short version: "As the old Chinese saying goes, a journey of a thousand miles begins with a single step. A test suite for legacy code begins with a single test."