Unit Testing in Java

Foreword

Erich Gamma

As a professional software developer, I want to develop software as fast as possible, as well as possible, and as stress-free as possible. Automated unit tests help to bring me closer to this goal. They are a small investment, which help me get confidence in the code I produce and maintain later on. When I don’t have automated tests, I have to fall back on manual testing. However, manual tests cannot be automatically repeated. Consequently, the stress increases, particularly when they have to be done under time pressure, which isn’t, of course, the exception. At the push of a button you can determine at any given time whether or not the last change impacts the fitness of your software. You can do this today, tomorrow, ...