this post was submitted on 10 Sep 2023
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I love unit tests but I hate the eternal struggle behind them.
We should make unit tests so we can tell when the build runs that the app is going to be consistent
Everyone cheers
We lose a sprint setting up unit tests
Oh this one test just went yellow, somebody spends a few hours figuring it out and finds that it's a bug in the unit test. No no we're good That's just a bug in the unit test we'll plan to fix that in the next Sprint.
Oh look now this unit test is going red we're blocked. 2 hours later they find out that it's a real problem but it's not so bad that it overrides current feature work. Well we're going to need to override that and we'll have to fix it in the next sprint.
Unit test failures slowly degrade in priority to try to get feature work done. You end up with a backlog full of yellow and red known problems and no one pays any attention to you that tests anymore.