bpo-40094: Enhance threading tests by vstinner · Pull Request #19260 · python/cpython

@vstinner

* Rewrite test_thread.test_forkinthread() to use
  support.wait_process() and wait for the child process in the main
  thread, not in the spawned thread.
* test_threading now uses support.wait_process() and checks the child
  process exit code to detect crashes.