I don’t believe that getting 100% coverage is worth it in most cases. Especially not when it comes to testing view code. For our applications, it simply changes too often and the criticality of display bugs is low and very rarely realized anyway.

In terms of tooling, we’re using the vanilla Test::Unit flavor that ships with Rails. I’m personally not convinced that rspec holds much improvement over it and I tend to think the DSL-style has been taken a tad too far. But I do like the BDD-style focus of naming your tests in terms of “should” and I use that in my own style.

— DHH