For what it's worth I think you both make great points. Whomever one agrees with perhaps mostly hinges on whether unit tests can get in the way of integration t

For what it's worth I think you both make great points. Whomever one agrees with perhaps mostly hinges on whether unit tests can get in the way of integration tests. I'm inclined to believe that some of the exhaustive unit testing culture can provide a false sense of security, and the work involved to write them can get in the way of writing proper integration tests (or 'degrees of' if you see it as a spectrum). Provided that proper test coverage includes both integration tests and unit tests, it probably won't hurt to do both. I like unit tests as part of my process (the red-green TDD process can be quite addictive and useful), but under pressure I'd prioritize integration tests, knowing that the more time I spend unit testing, the less I'll spend integration testing.