Moreover, running different types of developer tests, such as component, functional and performance, can shine a light on problem areas earlier in the development life cycle.

而且，运行各种类型的开发人员测试，如组件测试、功能测试和性能测试，能够在开发生命周期中更早地 将问题显示出来。

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Scenario 3: a developer receives a defect ticket for a problem encountered in a functional test cycle.

情况3：开发人员收到了一张关于功能测试周期中遇到的问题的缺陷清单。

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In the last few years, however, a number of open source tools have sprung up that address functional testing; moreover, you can easily employ these tools early in the development life cycle.

但近几年来，一些着眼于功能测试的开放源码工具脱颖而出；而且，能轻易地在开发生命周期的早期使用这些工具。

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