From 3d6df846580ce6ef8769945e6990af2f44251e40 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Fri, 20 Jul 2018 13:59:55 +0100 Subject: Test and fix support for cancellation in Linearizer --- tests/util/test_linearizer.py | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'tests') diff --git a/tests/util/test_linearizer.py b/tests/util/test_linearizer.py index c9563124f9..4729bd5a0a 100644 --- a/tests/util/test_linearizer.py +++ b/tests/util/test_linearizer.py @@ -17,6 +17,7 @@ from six.moves import range from twisted.internet import defer, reactor +from twisted.internet.defer import CancelledError from synapse.util import Clock, logcontext from synapse.util.async import Linearizer @@ -112,3 +113,33 @@ class LinearizerTestCase(unittest.TestCase): d6 = limiter.queue(key) with (yield d6): pass + + @defer.inlineCallbacks + def test_cancellation(self): + linearizer = Linearizer() + + key = object() + + d1 = linearizer.queue(key) + cm1 = yield d1 + + d2 = linearizer.queue(key) + self.assertFalse(d2.called) + + d3 = linearizer.queue(key) + self.assertFalse(d3.called) + + d2.cancel() + + with cm1: + pass + + self.assertTrue(d2.called) + try: + yield d2 + self.fail("Expected d2 to raise CancelledError") + except CancelledError: + pass + + with (yield d3): + pass -- cgit 1.4.1