Multiprocessing Problems on Mac with HippoUnit

[marvinmarz]

Hi guys,

when I am trying to run a test battery with HippoUnit I receive this error on Mac:

fatal IO error 0 (Undefined error: 0) on X server "/private/tmp/com.apple.launchd.CvaJuL8ePN/org.xquartz:0"
after 19 requests (19 known processed) with 0 events remaining.

It also tells me:

Application Specific Information:
*** multi-threaded process forked ***
crashed on child side of fork pre-exec

The problem seems to start with the respective test, i.e., SomaticFeaturesTest, and crashes with the multiprocessing pool.map() function. I expect that there could be some incompatibility issue between multiprocessing and XQuartz on Mac. Is this problem known or is there some platform problem with Mac and XQuartz? I would be most grateful for any ideas on how to fix this problem.

I am using PyCharm with Python 3.11.

Best,
Marvin