MatrixSynapse/tests/storage/util/test_partial_state_events_t...

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# Copyright 2022 The Matrix.org Foundation C.I.C.
#
# 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 typing import Dict
from unittest import mock
from twisted.internet.defer import CancelledError, ensureDeferred
from synapse.storage.util.partial_state_events_tracker import PartialStateEventsTracker
from tests.unittest import TestCase
class PartialStateEventsTrackerTestCase(TestCase):
def setUp(self) -> None:
# the results to be returned by the mocked get_partial_state_events
self._events_dict: Dict[str, bool] = {}
async def get_partial_state_events(events):
return {e: self._events_dict[e] for e in events}
self.mock_store = mock.Mock(spec_set=["get_partial_state_events"])
self.mock_store.get_partial_state_events.side_effect = get_partial_state_events
self.tracker = PartialStateEventsTracker(self.mock_store)
def test_does_not_block_for_full_state_events(self):
self._events_dict = {"event1": False, "event2": False}
self.successResultOf(
ensureDeferred(self.tracker.await_full_state(["event1", "event2"]))
)
self.mock_store.get_partial_state_events.assert_called_once_with(
["event1", "event2"]
)
def test_blocks_for_partial_state_events(self):
self._events_dict = {"event1": True, "event2": False}
d = ensureDeferred(self.tracker.await_full_state(["event1", "event2"]))
# there should be no result yet
self.assertNoResult(d)
# notifying that the event has been de-partial-stated should unblock
self.tracker.notify_un_partial_stated("event1")
self.successResultOf(d)
def test_un_partial_state_race(self):
# if the event is un-partial-stated between the initial check and the
# registration of the listener, it should not block.
self._events_dict = {"event1": True, "event2": False}
async def get_partial_state_events(events):
res = {e: self._events_dict[e] for e in events}
# change the result for next time
self._events_dict = {"event1": False, "event2": False}
return res
self.mock_store.get_partial_state_events.side_effect = get_partial_state_events
self.successResultOf(
ensureDeferred(self.tracker.await_full_state(["event1", "event2"]))
)
def test_un_partial_state_during_get_partial_state_events(self):
# we should correctly handle a call to notify_un_partial_stated during the
# second call to get_partial_state_events.
self._events_dict = {"event1": True, "event2": False}
async def get_partial_state_events1(events):
self.mock_store.get_partial_state_events.side_effect = (
get_partial_state_events2
)
return {e: self._events_dict[e] for e in events}
async def get_partial_state_events2(events):
self.tracker.notify_un_partial_stated("event1")
self._events_dict["event1"] = False
return {e: self._events_dict[e] for e in events}
self.mock_store.get_partial_state_events.side_effect = get_partial_state_events1
self.successResultOf(
ensureDeferred(self.tracker.await_full_state(["event1", "event2"]))
)
def test_cancellation(self):
self._events_dict = {"event1": True, "event2": False}
d1 = ensureDeferred(self.tracker.await_full_state(["event1", "event2"]))
self.assertNoResult(d1)
d2 = ensureDeferred(self.tracker.await_full_state(["event1"]))
self.assertNoResult(d2)
d1.cancel()
self.assertFailure(d1, CancelledError)
# d2 should still be waiting!
self.assertNoResult(d2)
self.tracker.notify_un_partial_stated("event1")
self.successResultOf(d2)