He did that with serene confidence because the project had comprehensive code coverage.

他在进行重构时信心满满，因为项目拥有广泛的代码覆盖率。

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Unit tests give me the confidence that my code works and that I can change it, at a moment's notice, without the fear of it breaking.

单元测试给我信心，让我相信我的代码能够工作，而且我只要看一下，可以修改它，就不会害怕它会崩溃。

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The most complete set of tests possible, which increases your confidence in the code.

一组可能最完整的测试，它可以增加您对代码的信心。

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"The final result will be a ... next-generation computer code which the public can have confidence in, " said professor Victor Ransom, who is also on the Purdue team.

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