bpo-40094: Add test.support.wait_process() (GH-19254)
Moreover, the following tests now check the child process exit code:
* test_os.PtyTests
* test_mailbox.test_lock_conflict()
* test_tempfile.test_process_awareness()
* test_uuid.testIssue8621()
* multiprocessing resource tracker tests
diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
index 36a2653..fdda1d1 100644
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -1092,7 +1092,7 @@
# Signal the child it can now release the lock and exit.
p.send(b'p')
# Wait for child to exit. Locking should now succeed.
- exited_pid, status = os.waitpid(pid, 0)
+ support.wait_process(pid, exitcode=0)
self._box.lock()
self._box.unlock()