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Misc asyncio improvements from upstream

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This commit is contained in:
Guido van Rossum 2016-09-30 08:17:15 -07:00
parent 07cfd504e4
commit e3c65a7a22
8 changed files with 164 additions and 42 deletions
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31
Lib/test/test_asyncio/test_tasks.py
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@ -1723,6 +1723,37 @@ class TaskTests(test_utils.TestCase):
wd['cw'] = cw # Would fail without __weakref__ slot.
cw.gen = None # Suppress warning from __del__.
def test_corowrapper_throw(self):
# Issue 429: CoroWrapper.throw must be compatible with gen.throw
def foo():
value = None
while True:
try:
value = yield value
except Exception as e:
value = e
exception = Exception("foo")
cw = asyncio.coroutines.CoroWrapper(foo())
cw.send(None)
self.assertIs(exception, cw.throw(exception))
cw = asyncio.coroutines.CoroWrapper(foo())
cw.send(None)
self.assertIs(exception, cw.throw(Exception, exception))
cw = asyncio.coroutines.CoroWrapper(foo())
cw.send(None)
exception = cw.throw(Exception, "foo")
self.assertIsInstance(exception, Exception)
self.assertEqual(exception.args, ("foo", ))
cw = asyncio.coroutines.CoroWrapper(foo())
cw.send(None)
exception = cw.throw(Exception, "foo", None)
self.assertIsInstance(exception, Exception)
self.assertEqual(exception.args, ("foo", ))
@unittest.skipUnless(PY34,
'need python 3.4 or later')
def test_log_destroyed_pending_task(self):