Near as I can tell, many people are made uncomfortable by this in practice because these tests feel childish and dare I say demeaning. So they try to do something “sophisticated” instead which is a slow and lingering death where tests are co corned.

Lacking self consciousness, you can whack out hundreds of unit tests in a couple of days, and rewrite ten of someone else’s for a feature or a bug fix. That’s fine and good.

But when your test looks like an integration test, rewriting it misses boundary conditions because the test is t clear about what it’s doing. And then you have silent regressions in code with high coverage. What a mess.