unit testing

例句：

1. 1.In unit testing, we simulate the user interface to ensure that it works as expected.
   在单元测试中，我们模拟用户界面以确保它按预期工作。
2. 2. The software engineers performed unit testing on the new code.
   软件工程师对新代码进行了单元测试。
3. 3.Unit testing is an important part of software development, helping to catch bugs early in the process.
   单元测试是软件开发的重要部分，有助于在过程早期发现错误。