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[3.11] gh-93453: Only emit deprecation warning in asyncio.get_event_loop when a new event loop is created (#99949)

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It no longer emits a deprecation warning if the current event loop was set.

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
This commit is contained in:
Serhiy Storchaka 2022-12-06 17:15:44 +02:00 • committed by GitHub
parent 235f5fd2ca
commit 3fae04b10e
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13 changed files with 109 additions and 123 deletions
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56
Lib/test/test_asyncio/test_tasks.py
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@ -200,10 +200,8 @@ class BaseTaskTests:
a = notmuch()
self.addCleanup(a.close)
with self.assertWarns(DeprecationWarning) as cm:
with self.assertRaisesRegex(RuntimeError, 'There is no current event loop'):
asyncio.ensure_future(a)
self.assertEqual(cm.filename, __file__)
with self.assertRaisesRegex(RuntimeError, 'no current event loop'):
asyncio.ensure_future(a)
async def test():
return asyncio.ensure_future(notmuch())
@ -213,12 +211,10 @@ class BaseTaskTests:
self.assertTrue(t.done())
self.assertEqual(t.result(), 'ok')
# Deprecated in 3.10
# Deprecated in 3.10, undeprecated in 3.11.1
asyncio.set_event_loop(self.loop)
self.addCleanup(asyncio.set_event_loop, None)
with self.assertWarns(DeprecationWarning) as cm:
t = asyncio.ensure_future(notmuch())
self.assertEqual(cm.filename, __file__)
t = asyncio.ensure_future(notmuch())
self.assertIs(t._loop, self.loop)
self.loop.run_until_complete(t)
self.assertTrue(t.done())
@ -1536,10 +1532,8 @@ class BaseTaskTests:
self.addCleanup(a.close)
futs = asyncio.as_completed([a])
with self.assertWarns(DeprecationWarning) as cm:
with self.assertRaisesRegex(RuntimeError, 'There is no current event loop'):
list(futs)
self.assertEqual(cm.filename, __file__)
with self.assertRaisesRegex(RuntimeError, 'no current event loop'):
list(futs)
def test_as_completed_coroutine_use_running_loop(self):
loop = self.new_test_loop()
@ -1969,10 +1963,8 @@ class BaseTaskTests:
inner = coro()
self.addCleanup(inner.close)
with self.assertWarns(DeprecationWarning) as cm:
with self.assertRaisesRegex(RuntimeError, 'There is no current event loop'):
asyncio.shield(inner)
self.assertEqual(cm.filename, __file__)
with self.assertRaisesRegex(RuntimeError, 'no current event loop'):
asyncio.shield(inner)
def test_shield_coroutine_use_running_loop(self):
async def coro():
@ -1986,15 +1978,13 @@ class BaseTaskTests:
self.assertEqual(res, 42)
def test_shield_coroutine_use_global_loop(self):
# Deprecated in 3.10
# Deprecated in 3.10, undeprecated in 3.11.1
async def coro():
return 42
asyncio.set_event_loop(self.loop)
self.addCleanup(asyncio.set_event_loop, None)
with self.assertWarns(DeprecationWarning) as cm:
outer = asyncio.shield(coro())
self.assertEqual(cm.filename, __file__)
outer = asyncio.shield(coro())
self.assertEqual(outer._loop, self.loop)
res = self.loop.run_until_complete(outer)
self.assertEqual(res, 42)
@ -2820,7 +2810,7 @@ class BaseCurrentLoopTests:
self.assertIsNone(asyncio.current_task(loop=self.loop))
def test_current_task_no_running_loop_implicit(self):
with self.assertRaises(RuntimeError):
with self.assertRaisesRegex(RuntimeError, 'no running event loop'):
asyncio.current_task()
def test_current_task_with_implicit_loop(self):
@ -2984,10 +2974,8 @@ class FutureGatherTests(GatherTestsBase, test_utils.TestCase):
return asyncio.gather(*args, **kwargs)
def test_constructor_empty_sequence_without_loop(self):
with self.assertWarns(DeprecationWarning) as cm:
with self.assertRaises(RuntimeError):
asyncio.gather()
self.assertEqual(cm.filename, __file__)
with self.assertRaisesRegex(RuntimeError, 'no current event loop'):
asyncio.gather()
def test_constructor_empty_sequence_use_running_loop(self):
async def gather():
@ -3000,12 +2988,10 @@ class FutureGatherTests(GatherTestsBase, test_utils.TestCase):
self.assertEqual(fut.result(), [])
def test_constructor_empty_sequence_use_global_loop(self):
# Deprecated in 3.10
# Deprecated in 3.10, undeprecated in 3.11.1
asyncio.set_event_loop(self.one_loop)
self.addCleanup(asyncio.set_event_loop, None)
with self.assertWarns(DeprecationWarning) as cm:
fut = asyncio.gather()
self.assertEqual(cm.filename, __file__)
fut = asyncio.gather()
self.assertIsInstance(fut, asyncio.Future)
self.assertIs(fut._loop, self.one_loop)
self._run_loop(self.one_loop)
@ -3093,10 +3079,8 @@ class CoroutineGatherTests(GatherTestsBase, test_utils.TestCase):
self.addCleanup(gen1.close)
gen2 = coro()
self.addCleanup(gen2.close)
with self.assertWarns(DeprecationWarning) as cm:
with self.assertRaises(RuntimeError):
asyncio.gather(gen1, gen2)
self.assertEqual(cm.filename, __file__)
with self.assertRaisesRegex(RuntimeError, 'no current event loop'):
asyncio.gather(gen1, gen2)
def test_constructor_use_running_loop(self):
async def coro():
@ -3110,16 +3094,14 @@ class CoroutineGatherTests(GatherTestsBase, test_utils.TestCase):
self.one_loop.run_until_complete(fut)
def test_constructor_use_global_loop(self):
# Deprecated in 3.10
# Deprecated in 3.10, undeprecated in 3.11.1
async def coro():
return 'abc'
asyncio.set_event_loop(self.other_loop)
self.addCleanup(asyncio.set_event_loop, None)
gen1 = coro()
gen2 = coro()
with self.assertWarns(DeprecationWarning) as cm:
fut = asyncio.gather(gen1, gen2)
self.assertEqual(cm.filename, __file__)
fut = asyncio.gather(gen1, gen2)
self.assertIs(fut._loop, self.other_loop)
self.other_loop.run_until_complete(fut)