bpo-30317, test_multiprocessing: fix test_timeout() (GH-7957)

Tolerate a different of 50 ms, instead of just 30 ms, in
test_timeout() of multiprocessing tests. This change should fix such
test failure on Windows:

FAIL: test_timeout (test.test_multiprocessing_spawn.WithProcessesTestQueue)
Traceback (most recent call last):
  File "lib\test\_test_multiprocessing.py", line 753, in test_timeout
    self.assertGreaterEqual(delta, 0.170)
AssertionError: 0.16138982772827148 not greater than or equal to 0.17
(cherry picked from commit f15f66d275d1166839312c9ff3a67c00b486c7d6)

Co-authored-by: Victor Stinner <vstinner@redhat.com>

diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index 0a82026f4d21f429309a638249c5193981c8a6de..3fa45b6787332efb15eda9b65862c33c794e8988 100644 (file)
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -878,9 +878,9 @@ class _TestQueue(BaseTestCase):
         start = time.time()
         self.assertRaises(pyqueue.Empty, q.get, True, 0.200)
         delta = time.time() - start
-        # Tolerate a delta of 30 ms because of the bad clock resolution on
+        # Tolerate a delta of 50 ms because of the bad clock resolution on
         # Windows (usually 15.6 ms)
-        self.assertGreaterEqual(delta, 0.170)
+        self.assertGreaterEqual(delta, 0.150)
         close_queue(q)
 
     def test_queue_feeder_donot_stop_onexc(self):