[6DM]

Just to clarify, I am not advocating for tests to only test one thing, rather that after you have tested for one scenario you don't need to rehash it again in another test.

Breaking a test down helps to clarify what you're testing and helps to prevent 80 loc unit tests. When I test for multiple things, I look for the equivalent of nunit's assert.multiple in the language that I'm in.

The approach I advocate for typically simplifies testing multiple scenarios with clear objectives and tends to make it easier when it comes time to refactor/fix/or just delete a no longer needed unit test. The difference I find, is that now you know why, vs having to figure out why.