From 475a5fbb5644ea200c990d85d8c264e78ab6c7ea Mon Sep 17 00:00:00 2001 From: Vinay Sharma Date: Mon, 31 Aug 2020 00:33:11 +0530 Subject: bpo-41344: Raise ValueError when creating shared memory of size 0 (GH-21556) --- Lib/test/_test_multiprocessing.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'Lib/test/_test_multiprocessing.py') diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py index 6a0e1016aff..fd3b4303f03 100644 --- a/Lib/test/_test_multiprocessing.py +++ b/Lib/test/_test_multiprocessing.py @@ -3880,6 +3880,18 @@ 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. -- cgit v1.2.3