Comment by hitchstory

I usually start with a basic e2e that tests the most minimal happy path possible. It makes no assumptions about architecture or anything else.

You don't need something to work with to write it. You can, by definition, write an e2e test against an app that doesnt exist.

This test isnt special as far as TDD is concerned - red-green-refactor works the same way.

Im sensing a pattern in the answers to my question though. I keep getting "well, if you assume TDD is only done with low level unit tests..."