我正致力于将单元测试集成到我所在团队的开发过程中,有一些人对此持怀疑态度。有什么好方法可以让团队中持怀疑态度的开发人员相信单元测试的价值?在我的具体情况下,我们将在添加功能或修复错误时添加单元测试。不幸的是,我们的代码库并不容易进行测试。
当前回答
我是一名维护工程师,负责一个文档记录不佳、糟糕而庞大的代码库。我希望编写代码的人已经为它编写了单元测试。 每次我进行更改和更新产品代码时,我都担心自己可能会因为没有考虑某些条件而引入错误。 如果他们编写测试,那么对代码库的更改就会更容易、更快。(与此同时,代码库将处于更好的状态)..
我认为,在编写api或框架时,单元测试非常有用,因为这些api或框架必须持续多年,并由原始编码器以外的人使用/修改/发展。
其他回答
Yes - Unit Testing is definitely worth the effort but you should know it's not a silver bullet. Unit Testing is work and you will have to work to keep the test updated and relevant as code changes but the value offered is worth the effort you have to put in. The ability to refactor with impunity is a huge benefit as you can always validate functionality by running your tests after any change code. The trick is to not get too hung up on exactly the unit-of-work you're testing or how you are scaffolding test requirements and when a unit-test is really a functional test, etc. People will argue about this stuff for hours on end and the reality is that any testing you do as your write code is better than not doing it. The other axiom is about quality and not quantity - I have seen code-bases with 1000's of test that are essentially meaningless as the rest don't really test anything useful or anything domain specific like business rules, etc of the particular domain. I've also seen codebases with 30% code coverage but the tests were relevant, meaningful and really awesome as they tested the core functionality of the code it was written for and expressed how the code should be used.
在探索新的框架或代码库时,我最喜欢的一个技巧是为“它”编写单元测试,以发现事物是如何工作的。这是一个学习新事物的好方法,而不是阅读枯燥的文档:)
Unit testing helps a lot in projects that are larger than any one developer can hold in their head. They allow you to run the unit test suite before checkin and discover if you broke something. This cuts down a lot on instances of having to sit and twiddle your thumbs while waiting for someone else to fix a bug they checked in, or going to the hassle of reverting their change so you can get some work done. It's also immensely valuable in refactoring, so you can be sure that the refactored code passes all the tests that the original code did.
当你说“我们的代码库不适合简单的测试”时,这是代码气味的第一个迹象。编写单元测试意味着您通常以不同的方式编写代码,以使代码更具可测试性。在我看来,这是一件好事,因为多年来我在编写代码时看到我必须为其编写测试,这迫使我提出更好的设计。
偶尔,我自己或我的同事会花几个小时来研究一个不太明显的错误,一旦发现了错误的原因,90%的情况下代码都没有经过单元测试。单元测试并不存在,因为开发人员为了节省时间而偷工减料,但随后却失去了这一点和更多的调试。
花少量的时间来编写单元测试可以节省未来调试的时间。
就在今天,我不得不更改一个类,之前已经为其编写了单元测试。 测试本身写得很好,包括我甚至没有想过的测试场景。 幸运的是,所有测试都通过了,我的更改很快得到了验证,并自信地放到了测试环境中。
推荐文章
- 为什么Visual Studio 2015/2017/2019测试运行器没有发现我的xUnit v2测试
- 单元测试反模式目录
- 类未找到:IntelliJ中的空测试套件
- Mockito的argumentCaptor的例子
- 单元测试:日期时间。现在
- 为什么单元测试中的代码不能找到包资源?
- 从导入的模块中模拟函数
- 在单元测试中设置HttpContext.Current.Session
- 何时使用Mockito.verify()?
- 在PHP单元测试执行期间,如何在CLI中输出?
- 单元测试的一些常用命名约定是什么?
- 如何直接从测试驱动程序调用自定义的Django manage.py命令?
- 如何重置笑话模拟函数调用计数之前,每次测试
- 在Python Django中运行单元测试时,如何禁用日志记录?
- 在子目录中测试Golang