Every time a programmer runs the build process and has a successful code compile, a run of all the applicable unit tests should follow.

程序员每次运行构建流程并成功编译代码时，应遵循所有的应用单元测试。

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What makes TDD so effective is the automation of your programmer (unit) tests, and the great news is that the only tools you need are available for free on the Internet.

使TDD更加有效的原因是单元测试自动化，而且这些自动化单元测试的工具可以从Internet上免费获得。

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Another specification that a programmer can provide for an interface is a suite of unit tests.

程序员可为接口提供的另一个规范是一套单元测试。

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