In my experience, a bug that causes a unit test to fail also causes an integration or E2E test to fail. Also, it’s relatively easy to determine the cause of the

In my experience, a bug that causes a unit test to fail also causes an integration or E2E test to fail. Also, it’s relatively easy to determine the cause of the problem given a change and a failing integration/E2E test. Unit tests are usually much quicker to run, but you also need a lot more of them. I think when you combine these things, it’s easy to reach the conclusion that unit tests are redundant.