The phrase “Don’t test standard Active Record association” jumped out at me, since I’ve discovered a major bug in the most basic function of Active Record associations in 3.0.x.

https://github.com/rails/rails/issues/5744

That said, I generally agree with DHH that many developers write too many of the wrong kinds of tests and this can make products brittle.

I share his disdain for Cucumber and rspec. I prefer clarity over syntactic sugar and non-programmer readability.