Unit testing has the benefit of telling you more specifically which bit of code is broken. That is more valuable when it finds the error. Integration testing will find more errors. As dragonwriter says, though, the focus of TDD is not the fact the tests find errors but the way they shape your development. For that end, it's not clear to me (at all) which is "more valuable".
Comments
Unit testing has the benefit of telling you more specifically which bit of code is broken. That is more valuable when it finds the error. Integration testing will find more errors. As dragonwriter says, though, the focus of TDD is not the fact the tests find errors but the way they shape your development. For that end, it's not clear to me (at all) which is "more valuable".