diff options
| author | Vinay Sharma <vinay04sharma@icloud.com> | 2019-09-09 16:48:55 (GMT) |
|---|---|---|
| committer | Davin Potts <applio@users.noreply.github.com> | 2019-09-09 16:48:55 (GMT) |
| commit | d14e39c8d9a9b525c7dcd83b2a260e2707fa85c1 (patch) | |
| tree | 5aabc7eef491db06440c84527e71584cd764d8f8 | |
| parent | 64c6ac74e254d31f93fcc74bf02b3daa7d3e3f25 (diff) | |
| download | cpython-d14e39c8d9a9b525c7dcd83b2a260e2707fa85c1.zip cpython-d14e39c8d9a9b525c7dcd83b2a260e2707fa85c1.tar.gz cpython-d14e39c8d9a9b525c7dcd83b2a260e2707fa85c1.tar.bz2 | |
bpo-38018: Increase code coverage for multiprocessing.shared_memory (GH-15662)
| -rw-r--r-- | Lib/test/_test_multiprocessing.py | 24 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Tests/2019-09-03-19-33-10.bpo-38018.zTrMu7.rst | 1 |
2 files changed, 25 insertions, 0 deletions
diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py index 2fe0def..8269b87 100644 --- a/Lib/test/_test_multiprocessing.py +++ b/Lib/test/_test_multiprocessing.py @@ -3719,6 +3719,30 @@ class _TestSharedMemory(BaseTestCase): self.assertLess(same_sms.size, 20*sms.size) # Size was ignored. same_sms.close() + # Creating Shared Memory Segment with -ve size + with self.assertRaises(ValueError): + shared_memory.SharedMemory(create=True, size=-2) + + # Attaching Shared Memory Segment without a name + with self.assertRaises(ValueError): + shared_memory.SharedMemory(create=False) + + # Test if shared memory segment is created properly, + # when _make_filename returns an existing shared memory segment name + with unittest.mock.patch( + 'multiprocessing.shared_memory._make_filename') as mock_make_filename: + + names = ['test01_fn', 'test02_fn'] + mock_make_filename.side_effect = names + shm1 = shared_memory.SharedMemory(create=True, size=1) + self.addCleanup(shm1.unlink) + self.assertEqual(shm1.name, names[0]) + + mock_make_filename.side_effect = names + shm2 = shared_memory.SharedMemory(create=True, size=1) + self.addCleanup(shm2.unlink) + self.assertEqual(shm2.name, names[1]) + if shared_memory._USE_POSIX: # Posix Shared Memory can only be unlinked once. Here we # test an implementation detail that is not observed across diff --git a/Misc/NEWS.d/next/Tests/2019-09-03-19-33-10.bpo-38018.zTrMu7.rst b/Misc/NEWS.d/next/Tests/2019-09-03-19-33-10.bpo-38018.zTrMu7.rst new file mode 100644 index 0000000..3646404 --- /dev/null +++ b/Misc/NEWS.d/next/Tests/2019-09-03-19-33-10.bpo-38018.zTrMu7.rst @@ -0,0 +1 @@ +Increase code coverage for multiprocessing.shared_memory. |