add a flag to have unleash return a nonzero value on failure

[toejough]

🚀 Feature Request

Is your feature request related to a problem? Please describe

I would like to be able to use this tool in a series of checks and stop if anything is NOT COVERED or LIVED.

Describe the solution you'd like

Have gremlins unleash --fail-not-covered --fail-lived return 1 if anything is NOT COVERED or LIVED, and similar for other states.

Describe alternatives you've considered

I could pipe this into a script that searches for text, but that's fragile and prevents the nice colored report from being printed, unless I also want to build my own pattern-matching & colorizing, which I do not. Or I could run the program twice, once for the nice human output and once into the script to scan for & react to the result, which I also don't want to do.

Additional context

I tried setting the --threshold-efficacy=1.0 and --threshold-mcover=1.0 (and up to 100.0) but at Test efficacy: 85.71%
Mutator coverage: 46.67%, the RC was still 0. Am I missing something?

[rusinikita]

--threshold-efficacy have value in percent

So, you need to use 100 instead of 1.0

https://gremlins.dev/latest/usage/commands/unleash/#threshold-efficacy