What's the difference between good and bad unit tests? 🧐
Bad unit tests feel right in the beginning. They let you feel confident, because hey, you write tests.
But nothing really changes 🙊 , once you get into the refactoring part, and you have to refactor tests as well. And their assertions for the result. This leads to even longer development, even though you invested time in tests at the begging of the project.
So this leads us to the conclusion that… not are tests are equally valuable. Some of them raise false alarms. Some unit tests don't help you catch regression errors. Bad unit tests may be as well slow and are difficult to maintain.
Don't write unit tests just for sake of writing unit tests!
Focus on high-quality tests 🚀
💻 They'll help you develop and design code, that is sustainable.
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