Of course writing unit tests for rich components requires some experience, time and effort but it is an important part of application development.

当然，编写富组件的单元测试需要经验、时间和精力，但这也是应用开发的一个重要组成部分。

I'll go even further: Extensive unit testing improves your customer experience and the design in your code because it forces you to decouple code that's bound too tightly together.

我以后会进一步讲述：广泛的单元测试改善您的客户体验，并提高代码的设计水平，这是因为它强迫您解耦联系过于紧密的代码。

Our experience has shown that unit testing, and in particular, automated unit testing, helps greatly during development.

我们的经验表明，单元测试特别是自动单元测试在开发过程中是非常有帮助的。