This message was deleted.

Heavily depends on which parallelization you are talking about. If you for example talk about the parallel running of tests JUnit Jupiter or also Spock are capable of, then this is a pure setup withing JUnit Jupiter or Spock. If you for example mean you run with

--parallel

to have tasks of different projects run in parallel but don't want that for tests, then create a shared build service with max parallel usage 1 and declare all test tasks to use that service then it serves as exclusive lock.

For JUnit5 use

@Isolated