Test-driven development has been around for a while and many people have still not adopted it. The reason behind this is that TDD is difficult to master. Even though the theory is very easy to grasp, it takes a lot of practice to become really proficient with it. The authors of this book have been practicing TDD for years and will try to pass on their experience to you. They are developers and believe that the best way to learn some coding practice is through code and constant practice. This book follows the same philosophy. We'll explain all the TDD concepts through exercises. This will be a journey through TDD best practices applied to Java development. At the end of it, you will earn a TDD black belt and have one more tool in your software craftsmanship tool belt.