Testing performance data based local check's output

Hello there!

I’m building a few local checks which are returning the state based on performance values. Unfortunately I have discovered that the official documentation does not include every use-case and I’m looking for a solution to quickly test the local check output (to see how checkmk would parse the output exactly). Does anyone have an easy to implement solution for this?

I will switch to using plugins and MKPs in the near future, I have already checked a few recommendations on this forum for testing those, I’m only looking for a solution for the above situation now.

Thank you in advance,