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bpo-41344: Raise ValueError when creating shared memory of size 0 (GH-21556) (GH-22018)

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(cherry picked from commit 475a5fbb56)

Co-authored-by: Vinay Sharma <vinay04sharma@icloud.com>

Co-authored-by: Vinay Sharma <vinay04sharma@icloud.com>
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Miss Islington (bot) 2020-08-30 12:42:22 -07:00 • committed by GitHub
parent 901c2eae6e
commit ca55ecbf9a
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12
Lib/test/_test_multiprocessing.py
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@ -3864,6 +3864,18 @@ class _TestSharedMemory(BaseTestCase):
sms.close()
# Test creating a shared memory segment with negative size
with self.assertRaises(ValueError):
sms_invalid = shared_memory.SharedMemory(create=True, size=-1)
# Test creating a shared memory segment with size 0
with self.assertRaises(ValueError):
sms_invalid = shared_memory.SharedMemory(create=True, size=0)
# Test creating a shared memory segment without size argument
with self.assertRaises(ValueError):
sms_invalid = shared_memory.SharedMemory(create=True)
def test_shared_memory_across_processes(self):
# bpo-40135: don't define shared memory block's name in case of
# the failure when we run multiprocessing tests in parallel.