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Fix issue #20367: concurrent.futures.as_completed() for duplicate arguments.

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Patch by Glenn Langford.
This commit is contained in:
Guido van Rossum 2014-01-26 09:57:51 -08:00
parent 252fd0c24b
commit e6994ff6e3
4 changed files with 16 additions and 3 deletions
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7
Lib/test/test_concurrent_futures.py
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@ -350,6 +350,13 @@ class AsCompletedTests:
SUCCESSFUL_FUTURE]),
completed_futures)
def test_duplicate_futures(self):
# Issue 20367. Duplicate futures should not raise exceptions or give
# duplicate responses.
future1 = self.executor.submit(time.sleep, 2)
completed = [f for f in futures.as_completed([future1,future1])]
self.assertEqual(len(completed), 1)
class ThreadPoolAsCompletedTests(ThreadPoolMixin, AsCompletedTests, unittest.TestCase):
pass