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bpo-32253: Deprecate with statement and bare await for asyncio locks (GH-4764)

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* Add test for 'with (yield from lock)'
* Deprecate with statement for asyncio locks
* Document the deprecation
This commit is contained in:
Andrew Svetlov 2017-12-09 20:00:05 +02:00 • committed by GitHub
parent a9f8df646a
commit 28d8d14013
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5 changed files with 108 additions and 55 deletions
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13
Lib/test/test_asyncio/test_pep492.py
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@ -59,12 +59,13 @@ class LockTests(BaseTest):
async def test(lock):
await asyncio.sleep(0.01, loop=self.loop)
self.assertFalse(lock.locked())
with await lock as _lock:
self.assertIs(_lock, None)
self.assertTrue(lock.locked())
await asyncio.sleep(0.01, loop=self.loop)
self.assertTrue(lock.locked())
self.assertFalse(lock.locked())
with self.assertWarns(DeprecationWarning):
with await lock as _lock:
self.assertIs(_lock, None)
self.assertTrue(lock.locked())
await asyncio.sleep(0.01, loop=self.loop)
self.assertTrue(lock.locked())
self.assertFalse(lock.locked())
for primitive in primitives:
self.loop.run_until_complete(test(primitive))