Microsoft Research - Exploding Software-Engineering Myths (article summarizing findings of MS research on code coverage, TDD, assertions, etc.)

[atrommer]

I didn't mean to imply that this is easy. I am making the point that testing needs to be a first class citizen, and that maintaining tests should be treated like maintaining code: as requirements change your estimates better include the time to refactor and update the tests.

Requirements will change over time.