System level integration tests are also proof that the work we did is correct and we can move on. And it is better proof than unit tests, because we aren't mocking everything. And they are far more likely to survive a large and risky refactor than unit tests.
Don't confusing testing in general with unit testing. Just use the right tool for the job. If your unit tests aren't catching a material number of bugs compared the the effort spent, compared to other testing methods, then don't do them. Unit tests have benefits such as quicker execution time, etc. - but that has to be weighed against cost.
Don't confusing testing in general with unit testing. Just use the right tool for the job. If your unit tests aren't catching a material number of bugs compared the the effort spent, compared to other testing methods, then don't do them. Unit tests have benefits such as quicker execution time, etc. - but that has to be weighed against cost.