Relax test timing (bpo-29861) to avoid sporadic failures (#1120) (#1472)

(cherry picked from commit 685cdb9acc3fca04a9897d88b89771ddfd50e772)

diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index 163c42f1d10a17ced98084cbe4d0601db3e704df..8cc4f5423acd51a37a6b31e8c24178bad2374a29 100644 (file)
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -1290,6 +1290,7 @@ class _TestPool(BaseTestCase):
         self.pool.map(identity, objs)
 
         del objs
+        time.sleep(DELTA)  # let threaded cleanup code run
         self.assertEqual(set(wr() for wr in refs), {None})
         # With a process pool, copies of the objects are returned, check
         # they were released too.