I saw DHH tweeting about the Basecamp test suite and it's mightily impressive. Similarly, the Pagecord test suite (974 tests) runs in 3.5 seconds on a 4-year old M1 Max MacBook Pro.

I can't understate what a delight this is!

By comparison the FreeAgent test suite (when I left) took 10 minutes when running on a gargantuan number of AWS servers and would take several hours on a single laptop. Mainly because of factories, RSpec, system tests and, well, probably mass over-testing in general. Truly suffocating (my bad).

(There are 17 system tests in Pagecord which take 20 seconds but I let GitHub Actions deal with those before I deploy. I think I could delete them tbh.)