[Python-checkins] FIX failure on OSX sem_getvalue (GH-6180) (GH-6181)

Antoine Pitrou webhook-mailer at python.org
Wed Mar 21 15:01:05 EDT 2018

commit: f5625d58fa3474f654defab19624c62a4915e6c9
branch: 3.7
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: Antoine Pitrou <pitrou at free.fr>
date: 2018-03-21T20:00:55+01:00

FIX failure on OSX sem_getvalue (GH-6180) (GH-6181)

(cherry picked from commit dec1c7786f642049c2508e909442189dc043b5da)

Co-authored-by: Thomas Moreau <thomas.moreau.2010 at gmail.com>

A Misc/NEWS.d/next/Library/2018-03-21-17-59-39.bpo-33078.PQOniT.rst
M Lib/test/_test_multiprocessing.py

diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index c787702f1d4c..c6a1f5ca9051 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -1062,11 +1062,16 @@ def __reduce__(self):
             q = self.Queue(maxsize=1)
-            self.assertEqual(q.qsize(), 1)
+            try:
+                self.assertEqual(q.qsize(), 1)
+            except NotImplementedError:
+                # qsize is not available on all platform as it
+                # relies on sem_getvalue
+                pass
             # bpo-30595: use a timeout of 1 second for slow buildbots
             # Check that the size of the queue is correct
-            self.assertEqual(q.qsize(), 0)
+            self.assertTrue(q.empty())
     def test_queue_feeder_on_queue_feeder_error(self):
diff --git a/Misc/NEWS.d/next/Library/2018-03-21-17-59-39.bpo-33078.PQOniT.rst b/Misc/NEWS.d/next/Library/2018-03-21-17-59-39.bpo-33078.PQOniT.rst
new file mode 100644
index 000000000000..8b71bb32e0ec
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-03-21-17-59-39.bpo-33078.PQOniT.rst
@@ -0,0 +1 @@
+Fix the failure on OSX caused by the tests relying on sem_getvalue

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