对于每个代码模块，你应当有测试其所有方法的一组单位测试。
For every code module, you should have a set of unit tests that exercises each of its methods.
InfoQ：你对于那些想要实施这种方法的团队有什么建议吗，为了确保他们已经准备好去做这些改变，他们要做些什么呢？
InfoQ: what advice do you have for teams looking to implement this approach - what do they need to do to make sure they are ready to make the change?
这种方法对于自我调整非常重要，并且要记住你最先做那件事的原因。
This a great tool for realigning yourself and remember the reason you started in the first place.
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