Parallel processes overwrite JUnit output file

[Dr10s]

Hi. When I run Behat in parallel like this:

vendor/bin/behat features -f junit -o var/log/behat --parallel=2

each parallel process writes to the same output file, so the last one overwrites previous results.
As a result, I get only one test case in the final JUnit report.

Expected behavior: Each parallel worker should write to a separate JUnit file (for example with an index suffix or in its own folder), or there should be a way to configure unique output paths per process.

Thanks!

[Daniel-Marynicz]

JUnit formatter is not part of the BehatParallelExtension. You should try to extend or decorate this formatter.