Matrix-Mirrors/synapse-product
1
0
Fork 0
mirror of https://git.anonymousland.org/anonymousland/synapse-product.git synced 2024-12-24 21:59:23 -05:00
Code Issues Packages Projects Releases Wiki Activity

Add test for ObservableDeferred's cancellation behaviour (#12149)

Browse Source 
Signed-off-by: Sean Quah <seanq@element.io>
This commit is contained in:
Sean Quah 2022-03-04 13:10:05 +00:00 committed by GitHub
parent cd1ae3d0b4
commit 158e0937eb
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
changelog.d/12149.misc Normal file
View File

@ -0,0 +1 @@
Add test for `ObservableDeferred`'s cancellation behaviour.

28
tests/util/test_async_helpers.py
View File

@ -100,6 +100,34 @@ class ObservableDeferredTest(TestCase):
self.assertEqual(str(results[0].value), "gah!", "observer 1 errback result")
self.assertEqual(str(results[1].value), "gah!", "observer 2 errback result")
def test_cancellation(self):
"""Test that cancelling an observer does not affect other observers."""
origin_d: "Deferred[int]" = Deferred()
observable = ObservableDeferred(origin_d, consumeErrors=True)
observer1 = observable.observe()
observer2 = observable.observe()
observer3 = observable.observe()
self.assertFalse(observer1.called)
self.assertFalse(observer2.called)
self.assertFalse(observer3.called)
# cancel the second observer
observer2.cancel()
self.assertFalse(observer1.called)
self.failureResultOf(observer2, CancelledError)
self.assertFalse(observer3.called)
# other observers resolve as normal
origin_d.callback(123)
self.assertEqual(observer1.result, 123, "observer 1 callback result")
self.assertEqual(observer3.result, 123, "observer 3 callback result")
# additional observers resolve as normal
observer4 = observable.observe()
self.assertEqual(observer4.result, 123, "observer 4 callback result")
class TimeoutDeferredTest(TestCase):
def setUp(self):