Be able to break with cover command

[tracker1]

In my project I'm running coverage against unit tests, and integration tests...

Check-coverage is cumulative... but I'd like for example my unit tests at 95% and my integration tests at 60% and the combined needing to reach 100%...

I'd like to be able to:

• run unit tests (if it doesn't meet threshold, break
• run integration tests (if it doesn't meet threshold, break)
• run report (for combined result)
• check-coverage (for combined result)

What I'm thinking is something like istanbul cover-and-check ... so that it can work like cover, but the check only on that specific cover statement's execution.