Unit testing and test-driven development are excellent tools for managing such fragile systems with confidence, but they only work if you use them.

单元测试和测试驱动的开发这些出色的工具使您可以信心十足地管理此类脆弱系统 —— 但只有在您确实使用了这些工具时，它们才能发挥作用。

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Model-driven testing support for systems engineering.

对系统工程师的模型驱动的测试支持。

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