Yeah it's a tempting thing to do because there's this naive belief that you must have 100% coverage. The fact that you've got coverage on trivial code is not do

Yeah it's a tempting thing to do because there's this naive belief that you must have 100% coverage. The fact that you've got coverage on trivial code is not doing anything to increase your reliability, and you're spending so much time mocking the requests which is not code you have any control over. Your 2nd paragraph is what DHH is fighting against. He's advocating much simpler controllers than many people tend to write, and the the inclination to write tests for a controller is increased by the complexity you've put in there. DHH is more importantly advocating an architectural style and that's getting lost in the "TDD is dead" linkbait.