books.google.fr - Clean code that works--now. This is the seeming contradiction that lies behind much of the pain of programming. Test-driven development replies to this contradiction with a paradox--test the program before you write it. A new idea? Not at all. Since the dawn of computing, programmers have been specifying...http://books.google.fr/books/about/Test_Driven_Development.html?id=goE1TL0u0dUC&utm_source=gb-gplus-shareTest-Driven Development