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# -*- coding: utf-8 -*-
# Copyright 2014 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet import defer
from twisted.trial import unittest
from mock import Mock, patch
from synapse.util.distributor import Distributor
class DistributorTestCase(unittest.TestCase):
def setUp(self):
self.dist = Distributor()
def test_signal_dispatch(self):
self.dist.declare("alert")
observer = Mock()
self.dist.observe("alert", observer)
d = self.dist.fire("alert", 1, 2, 3)
self.assertTrue(d.called)
observer.assert_called_with(1, 2, 3)
def test_signal_dispatch_deferred(self):
self.dist.declare("whine")
d_inner = defer.Deferred()
def observer():
return d_inner
self.dist.observe("whine", observer)
d_outer = self.dist.fire("whine")
self.assertFalse(d_outer.called)
d_inner.callback(None)
self.assertTrue(d_outer.called)
def test_signal_catch(self):
self.dist.declare("alarm")
observers = [Mock() for i in 1, 2]
for o in observers:
self.dist.observe("alarm", o)
observers[0].side_effect = Exception("Awoogah!")
with patch("synapse.util.distributor.logger",
spec=["warning"]
) as mock_logger:
d = self.dist.fire("alarm", "Go")
self.assertTrue(d.called)
observers[0].assert_called_once("Go")
observers[1].assert_called_once("Go")
self.assertEquals(mock_logger.warning.call_count, 1)
self.assertIsInstance(mock_logger.warning.call_args[0][0],
str)
@defer.inlineCallbacks
def test_signal_catch_no_suppress(self):
# Gut-wrenching
self.dist.suppress_failures = False
self.dist.declare("whail")
observer = Mock()
observer.return_value = defer.fail(
Exception("Oopsie")
)
self.dist.observe("whail", observer)
d = self.dist.fire("whail")
yield self.assertFailure(d, Exception)
def test_signal_prereg(self):
observer = Mock()
self.dist.observe("flare", observer)
self.dist.declare("flare")
self.dist.fire("flare", 4, 5)
observer.assert_called_with(4, 5)
def test_signal_undeclared(self):
def code():
self.dist.fire("notification")
self.assertRaises(KeyError, code)
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