Apologies if this has been asked, but I was wondering if there was a way to report the status of tests via a notification?

If I'm developing in a TDD style, I usually have some flavor of cargo watch -x test running in the background.

It would be great if there was a way to report red (tests failing) or green (test passing) through the desktop notifications.

It seems like the plumbing is there, since --notify pops up a notification every time there's a change, maybe just a way to react to the exit status? i.e. 0=green, >0=red?