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It’s strangely satisfying when the “this will probably never happen” test case finds a problem during development.
I had tests for deleting that were like
- create item a
- create item b
- delete item a via the code under test
- assert item a is gone
- assert item b is still there
I thought maybe the whole bit with item b was excessive, but sure enough one day I accidentally fucked something up and deleted all the items, and the test pointed it out before the bad code left my local machine.