Test that state events sent by modules correctly end up in the room's state (#10835)

Test for #10830

Ideally the test would also make sure the new state event comes down sync, but this is probably good enough.
rei/ci_par_4
Brendan Abolivier 2021-09-21 17:40:20 +02:00 committed by GitHub
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commit 2843058a8b
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changelog.d/10835.misc Normal file
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@ -0,0 +1 @@
Add a test to ensure state events sent by modules get persisted correctly.

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@ -15,6 +15,7 @@ import threading
from typing import Dict
from unittest.mock import Mock
from synapse.api.constants import EventTypes
from synapse.events import EventBase
from synapse.events.third_party_rules import load_legacy_third_party_event_rules
from synapse.module_api import ModuleApi
@ -327,3 +328,86 @@ class ThirdPartyRulesTestCase(unittest.HomeserverTestCase):
correctly.
"""
self.helper.create_room_as(self.user_id, tok=self.tok, expect_code=403)
def test_sent_event_end_up_in_room_state(self):
"""Tests that a state event sent by a module while processing another state event
doesn't get dropped from the state of the room. This is to guard against a bug
where Synapse has been observed doing so, see https://github.com/matrix-org/synapse/issues/10830
"""
event_type = "org.matrix.test_state"
# This content will be updated later on, and since we actually use a reference on
# the dict it does the right thing. It's a bit hacky but a handy way of making
# sure the state actually gets updated.
event_content = {"i": -1}
api = self.hs.get_module_api()
# Define a callback that sends a custom event on power levels update.
async def test_fn(event: EventBase, state_events):
if event.is_state and event.type == EventTypes.PowerLevels:
await api.create_and_send_event_into_room(
{
"room_id": event.room_id,
"sender": event.sender,
"type": event_type,
"content": event_content,
"state_key": "",
}
)
return True, None
self.hs.get_third_party_event_rules()._check_event_allowed_callbacks = [test_fn]
# Sometimes the bug might not happen the first time the event type is added
# to the state but might happen when an event updates the state of the room for
# that type, so we test updating the state several times.
for i in range(5):
# Update the content of the custom state event to be sent by the callback.
event_content["i"] = i
# Update the room's power levels with a different value each time so Synapse
# doesn't consider an update redundant.
self._update_power_levels(event_default=i)
# Check that the new event made it to the room's state.
channel = self.make_request(
method="GET",
path="/rooms/" + self.room_id + "/state/" + event_type,
access_token=self.tok,
)
self.assertEqual(channel.code, 200)
self.assertEqual(channel.json_body["i"], i)
def _update_power_levels(self, event_default: int = 0):
"""Updates the room's power levels.
Args:
event_default: Value to use for 'events_default'.
"""
self.helper.send_state(
room_id=self.room_id,
event_type=EventTypes.PowerLevels,
body={
"ban": 50,
"events": {
"m.room.avatar": 50,
"m.room.canonical_alias": 50,
"m.room.encryption": 100,
"m.room.history_visibility": 100,
"m.room.name": 50,
"m.room.power_levels": 100,
"m.room.server_acl": 100,
"m.room.tombstone": 100,
},
"events_default": event_default,
"invite": 0,
"kick": 50,
"redact": 50,
"state_default": 50,
"users": {self.user_id: 100},
"users_default": 0,
},
tok=self.tok,
)