My greatest reservation about TDD is one that's almost never referred to by its practitioners: the need for strong refactoring skills. To do TDD right, you've g

My greatest reservation about TDD is one that's almost never referred to by its practitioners: the need for strong refactoring skills. To do TDD right, you've got to be really good at refactoring your code. But many developers know only basic refactoring techniques. So if they do TDD, they end up generating code that looks like it was written to satisfy lots of small requirements, and it lacks the cohesion and clarity that it should have. I think TDD is taught the wrong way around. First, they should teach refactoring. And only when those skills are thoroughly mastered, should they move on to teaching TDD.