TDD: Unit testing focus

Question

Could TDD be oriented to another kind of testing different from unit testing?

Answer 1

While that might be possible under some interpretation of TDD, I think the main point of TDD is to write the tests before any production code. Given that, you won't have a large system to write integration or functional tests for, so the testing is necessarily going to be on the unit level.

Answer 2

Behavior-Driven Development (BDD) applies the ideas of TDD at the integration testing and functional testing level.

Answer 3

The red-green-refactor cycle of TDD is supposed to be quick, really quick. Fast feedback keeps you in the groove. I've seen approaches to TDD that take a full story, express it as a test, then drive development to pass that (large-ish) test. It's nominally TDD (or maybe BDD), but it doesn't feel right to me. Tiny steps, unit tests, is how I learned TDD, how I think of it, and how it works best for me.