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_uuid.py b/Lib/test/test_uuid.py
index 27fc56d..0b267f4 100644
--- a/Lib/test/test_uuid.py
+++ b/Lib/test/test_uuid.py
@@ -657,7 +657,7 @@
os.close(fds[1])
self.addCleanup(os.close, fds[0])
parent_value = self.uuid.uuid4().hex
- os.waitpid(pid, 0)
+ support.wait_process(pid, exitcode=0)
child_value = os.read(fds[0], 100).decode('latin-1')
self.assertNotEqual(parent_value, child_value)