From ea1803e608a7aaf9cf2c07e510d8540d46d3b9ad Mon Sep 17 00:00:00 2001 From: "Gregory P. Smith" Date: Wed, 6 Mar 2024 13:39:06 -0800 Subject: [PATCH] gh-88118: Fix some test_multiprocessing flakiness. (#116434) Fix some test_multiprocessing flakiness. Potentially introduced by https://github.com/python/cpython/pull/25845 not joining that thread likely leads to recently observed "environment changed" logically passing but overall failing tests seen on some buildbots similar to: ``` 1 test altered the execution environment (env changed): test.test_multiprocessing_fork.test_processes 2 re-run tests: test.test_multiprocessing_fork.test_processes test.test_multiprocessing_forkserver.test_processes ``` --- Lib/test/_test_multiprocessing.py | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py index 058537bab5af26..b63b567bbcad08 100644 --- a/Lib/test/_test_multiprocessing.py +++ b/Lib/test/_test_multiprocessing.py @@ -3513,15 +3513,20 @@ def run(addr, authkey): client = self.connection.Client(addr, authkey=authkey) client.send(1729) - key = b"" + key = b'' with self.connection.Listener(authkey=key) as listener: - threading.Thread(target=run, args=(listener.address, key)).start() - with listener.accept() as d: - self.assertEqual(d.recv(), 1729) + thread = threading.Thread(target=run, args=(listener.address, key)) + thread.start() + try: + with listener.accept() as d: + self.assertEqual(d.recv(), 1729) + finally: + thread.join() if self.TYPE == 'processes': - self.assertRaises(OSError, listener.accept) + with self.assertRaises(OSError): + listener.accept() @unittest.skipUnless(util.abstract_sockets_supported, "test needs abstract socket support")