Once your test suite is big enough that it won't run within a minute or two, it's kind of hard to keep a "green on each commit" workflow, though. Especially with UI and visual diff tests in the mix, I certainly don't want to tie up my local computer for a full test run when I'm just fixing a small bug; pushing the commits in a branch and letting the full suite run against that while I move on to another task is a much better use of resources, and that's where the PR model seems most useful to me.

Are there workflows that avoid this problem but still enforce every commit being green?