bpo-31234: Try to fix lock_tests warning (#3557)
Try to fix the "Warning -- threading_cleanup() failed to cleanup 1
threads" warning in test.lock_tests: wait a little bit longer to give
time to the threads to complete.
Warning seen on test_thread and test_importlib.
diff --git a/Lib/test/lock_tests.py b/Lib/test/lock_tests.py
index 4fa154f..e8fa4f9 100644
--- a/Lib/test/lock_tests.py
+++ b/Lib/test/lock_tests.py
@@ -54,6 +54,13 @@
def wait_for_finished(self):
while len(self.finished) < self.n:
_wait()
+ # Wait a little bit longer to prevent the "threading_cleanup()
+ # failed to cleanup X threads" warning. The loop above is a weak
+ # synchronization. At the C level, t_bootstrap() can still be
+ # running and so _thread.count() still accounts the "almost dead"
+ # thead.
+ for _ in range(self.n):
+ _wait()
def do_finish(self):
self._can_exit = True
@@ -304,6 +311,7 @@
self.assertRaises(RuntimeError, lock.release)
finally:
b.do_finish()
+ b.wait_for_finished()
def test__is_owned(self):
lock = self.locktype()