Almost Never test-first. It impedes my concentration and flow and inspiration. A new idea to me is like a fresh slab of marble you have to sculpt. Over time, yo

Almost Never test-first. It impedes my concentration and flow and inspiration. A new idea to me is like a fresh slab of marble you have to sculpt. Over time, you play with the code and api ergonomics datamodel and abstractions and UI until it “feels” right and takes on a more defined form. Working on tests at that point would be like continuously stopping to check the foundation of the marble. But for self contained code that is guaranteed to have edge cases (working with dates, date math, unstructured user input like SMS responses, almost always yes, but after some of the code is written and is getting cumbersome to test different cases manually.