Basically, growl notifications (or other callbacks) when tests break or pass. Does anything like this exist?
If not, it should be pretty easy to wri
One very useful tool that can make your life easier is entr. Written in C, and uses kqueue or inotify under the hood.
Following command runs your test suite if any *.py file in your project is changed.
ls */**.py | entr python -m unittest discover -s test
Works for BSD, Mac OS, and Linux. You can get entr from Homebrew.