I found the Junit5 docu that with ParallelExecutionConfigurationStrategy it is possible to implement ones own strategy. I search but didn't find valid samples.
My main issue is that I have in the tested classes a ThreadLocal which requires for each test an own (new) Thread. Is there a working sample how to provide this?
My current workaround is to set junit.jupiter.execution.parallel.config.dynamic.factor=100 which is not really the way I thought things are intended to work.