> Unit tests are useful, but only as part of a larger testing strategy. I agree, but I think you're making my point for me. TDD and unit tests alone are not en

> Unit tests are useful, but only as part of a larger testing strategy. I agree, but I think you're making my point for me. TDD and unit tests alone are not enough, which motivates further developments like BDD. I think we can apply an analogous argument even to a BDD process, because there are many advantageous properties code might have that can not be determined effectively using a finite number of specific, automated, behavioural tests, no matter what level of abstraction those tests run at. Your BDD process is not as limited as TDD, but it still contains a "magic happens" line, "Refactor code as appropriate."