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Prefer make_awaitable over defer.succeed in tests (#12505)

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When configuring the return values of mocks, prefer awaitables from
`make_awaitable` over `defer.succeed`. `Deferred`s are only awaitable
once, so it is inappropriate for a mock to return the same `Deferred`
multiple times.

Also update `run_in_background` to support functions that return
arbitrary awaitables.

Signed-off-by: Sean Quah <seanq@element.io>
This commit is contained in:
Sean Quah 2022-04-27 14:58:26 +01:00 committed by GitHub
parent 5ef673de4f
commit 78b99de7c2
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 72 additions and 69 deletions
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1
changelog.d/12505.misc Normal file
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@ -0,0 +1 @@
Use `make_awaitable` instead of `defer.succeed` for return values of mocks in tests.

26
synapse/logging/context.py
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@ -722,6 +722,11 @@ P = ParamSpec("P")
R = TypeVar("R")
async def _unwrap_awaitable(awaitable: Awaitable[R]) -> R:
"""Unwraps an arbitrary awaitable by awaiting it."""
return await awaitable
@overload
def preserve_fn( # type: ignore[misc]
f: Callable[P, Awaitable[R]],
@ -802,17 +807,20 @@ def run_in_background( # type: ignore[misc]
# by synchronous exceptions, so let's turn them into Failures.
return defer.fail()
# `res` may be a coroutine, `Deferred`, some other kind of awaitable, or a plain
# value. Convert it to a `Deferred`.
if isinstance(res, typing.Coroutine):
# Wrap the coroutine in a `Deferred`.
res = defer.ensureDeferred(res)
# At this point we should have a Deferred, if not then f was a synchronous
# function, wrap it in a Deferred for consistency.
if not isinstance(res, defer.Deferred):
# `res` is not a `Deferred` and not a `Coroutine`.
# There are no other types of `Awaitable`s we expect to encounter in Synapse.
assert not isinstance(res, Awaitable)
return defer.succeed(res)
elif isinstance(res, defer.Deferred):
pass
elif isinstance(res, Awaitable):
# `res` is probably some kind of completed awaitable, such as a `DoneAwaitable`
# or `Future` from `make_awaitable`.
res = defer.ensureDeferred(_unwrap_awaitable(res))
else:
# `res` is a plain value. Wrap it in a `Deferred`.
res = defer.succeed(res)
if res.called and not res.paused:
# The function should have maintained the logcontext, so we can

2
tests/federation/test_federation_client.py
View file

@ -83,7 +83,7 @@ class FederationClientTest(FederatingHomeserverTestCase):
)
# mock up the response, and have the agent return it
self._mock_agent.request.return_value = defer.succeed(
self._mock_agent.request.side_effect = lambda *args, **kwargs: defer.succeed(
_mock_response(
{
"pdus": [

2
tests/federation/test_federation_sender.py
View file

@ -226,7 +226,7 @@ class FederationSenderDevicesTestCases(HomeserverTestCase):
# Send the server a device list EDU for the other user, this will cause
# it to try and resync the device lists.
self.hs.get_federation_transport_client().query_user_devices.return_value = (
defer.succeed(
make_awaitable(
{
"stream_id": "1",
"user_id": "@user2:host2",

7
tests/handlers/test_e2e_keys.py
View file

@ -19,7 +19,6 @@ from unittest import mock
from parameterized import parameterized
from signedjson import key as key, sign as sign
from twisted.internet import defer
from twisted.test.proto_helpers import MemoryReactor
from synapse.api.constants import RoomEncryptionAlgorithms
@ -704,7 +703,7 @@ class E2eKeysHandlerTestCase(unittest.HomeserverTestCase):
remote_self_signing_key = "QeIiFEjluPBtI7WQdG365QKZcFs9kqmHir6RBD0//nQ"
self.hs.get_federation_client().query_client_keys = mock.Mock(
return_value=defer.succeed(
return_value=make_awaitable(
{
"device_keys": {remote_user_id: {}},
"master_keys": {
@ -777,14 +776,14 @@ class E2eKeysHandlerTestCase(unittest.HomeserverTestCase):
# Pretend we're sharing a room with the user we're querying. If not,
# `_query_devices_for_destination` will return early.
self.store.get_rooms_for_user = mock.Mock(
return_value=defer.succeed({"some_room_id"})
return_value=make_awaitable({"some_room_id"})
)
remote_master_key = "85T7JXPFBAySB/jwby4S3lBPTqY3+Zg53nYuGmu1ggY"
remote_self_signing_key = "QeIiFEjluPBtI7WQdG365QKZcFs9kqmHir6RBD0//nQ"
self.hs.get_federation_client().query_user_devices = mock.Mock(
return_value=defer.succeed(
return_value=make_awaitable(
{
"user_id": remote_user_id,
"stream_id": 1,

34
tests/handlers/test_password_providers.py
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@ -17,8 +17,6 @@
from typing import Any, Type, Union
from unittest.mock import Mock
from twisted.internet import defer
import synapse
from synapse.api.constants import LoginType
from synapse.api.errors import Codes
@ -190,7 +188,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.assertEqual(flows, [{"type": "m.login.password"}] + ADDITIONAL_LOGIN_FLOWS)
# check_password must return an awaitable
mock_password_provider.check_password.return_value = defer.succeed(True)
mock_password_provider.check_password.return_value = make_awaitable(True)
channel = self._send_password_login("u", "p")
self.assertEqual(channel.code, 200, channel.result)
self.assertEqual("@u:test", channel.json_body["user_id"])
@ -226,13 +224,13 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.get_success(module_api.register_user("u"))
# log in twice, to get two devices
mock_password_provider.check_password.return_value = defer.succeed(True)
mock_password_provider.check_password.return_value = make_awaitable(True)
tok1 = self.login("u", "p")
self.login("u", "p", device_id="dev2")
mock_password_provider.reset_mock()
# have the auth provider deny the request to start with
mock_password_provider.check_password.return_value = defer.succeed(False)
mock_password_provider.check_password.return_value = make_awaitable(False)
# make the initial request which returns a 401
session = self._start_delete_device_session(tok1, "dev2")
@ -246,7 +244,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
mock_password_provider.reset_mock()
# Finally, check the request goes through when we allow it
mock_password_provider.check_password.return_value = defer.succeed(True)
mock_password_provider.check_password.return_value = make_awaitable(True)
channel = self._authed_delete_device(tok1, "dev2", session, "u", "p")
self.assertEqual(channel.code, 200)
mock_password_provider.check_password.assert_called_once_with("@u:test", "p")
@ -260,7 +258,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.register_user("localuser", "localpass")
# check_password must return an awaitable
mock_password_provider.check_password.return_value = defer.succeed(False)
mock_password_provider.check_password.return_value = make_awaitable(False)
channel = self._send_password_login("u", "p")
self.assertEqual(channel.code, 403, channel.result)
@ -277,7 +275,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.register_user("localuser", "localpass")
# have the auth provider deny the request
mock_password_provider.check_password.return_value = defer.succeed(False)
mock_password_provider.check_password.return_value = make_awaitable(False)
# log in twice, to get two devices
tok1 = self.login("localuser", "localpass")
@ -320,7 +318,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.register_user("localuser", "localpass")
# check_password must return an awaitable
mock_password_provider.check_password.return_value = defer.succeed(False)
mock_password_provider.check_password.return_value = make_awaitable(False)
channel = self._send_password_login("localuser", "localpass")
self.assertEqual(channel.code, 403)
self.assertEqual(channel.json_body["errcode"], "M_FORBIDDEN")
@ -342,7 +340,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.register_user("localuser", "localpass")
# allow login via the auth provider
mock_password_provider.check_password.return_value = defer.succeed(True)
mock_password_provider.check_password.return_value = make_awaitable(True)
# log in twice, to get two devices
tok1 = self.login("localuser", "p")
@ -359,7 +357,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
mock_password_provider.check_password.assert_not_called()
# now try deleting with the local password
mock_password_provider.check_password.return_value = defer.succeed(False)
mock_password_provider.check_password.return_value = make_awaitable(False)
channel = self._authed_delete_device(
tok1, "dev2", session, "localuser", "localpass"
)
@ -413,7 +411,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.assertEqual(channel.code, 400, channel.result)
mock_password_provider.check_auth.assert_not_called()
mock_password_provider.check_auth.return_value = defer.succeed(
mock_password_provider.check_auth.return_value = make_awaitable(
("@user:bz", None)
)
channel = self._send_login("test.login_type", "u", test_field="y")
@ -427,7 +425,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
# try a weird username. Again, it's unclear what we *expect* to happen
# in these cases, but at least we can guard against the API changing
# unexpectedly
mock_password_provider.check_auth.return_value = defer.succeed(
mock_password_provider.check_auth.return_value = make_awaitable(
("@ MALFORMED! :bz", None)
)
channel = self._send_login("test.login_type", " USER🙂NAME ", test_field=" abc ")
@ -477,7 +475,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
mock_password_provider.reset_mock()
# right params, but authing as the wrong user
mock_password_provider.check_auth.return_value = defer.succeed(
mock_password_provider.check_auth.return_value = make_awaitable(
("@user:bz", None)
)
body["auth"]["test_field"] = "foo"
@ -490,7 +488,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
mock_password_provider.reset_mock()
# and finally, succeed
mock_password_provider.check_auth.return_value = defer.succeed(
mock_password_provider.check_auth.return_value = make_awaitable(
("@localuser:test", None)
)
channel = self._delete_device(tok1, "dev2", body)
@ -508,9 +506,9 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
self.custom_auth_provider_callback_test_body()
def custom_auth_provider_callback_test_body(self):
callback = Mock(return_value=defer.succeed(None))
callback = Mock(return_value=make_awaitable(None))
mock_password_provider.check_auth.return_value = defer.succeed(
mock_password_provider.check_auth.return_value = make_awaitable(
("@user:bz", callback)
)
channel = self._send_login("test.login_type", "u", test_field="y")
@ -646,7 +644,7 @@ class PasswordAuthProviderTests(unittest.HomeserverTestCase):
login is disabled"""
# register the user and log in twice via the test login type to get two devices,
self.register_user("localuser", "localpass")
mock_password_provider.check_auth.return_value = defer.succeed(
mock_password_provider.check_auth.return_value = make_awaitable(
("@localuser:test", None)
)
channel = self._send_login("test.login_type", "localuser", test_field="")

6
tests/handlers/test_typing.py
View file

@ -65,11 +65,11 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
# we mock out the keyring so as to skip the authentication check on the
# federation API call.
mock_keyring = Mock(spec=["verify_json_for_server"])
mock_keyring.verify_json_for_server.return_value = defer.succeed(True)
mock_keyring.verify_json_for_server.return_value = make_awaitable(True)
# we mock out the federation client too
mock_federation_client = Mock(spec=["put_json"])
mock_federation_client.put_json.return_value = defer.succeed((200, "OK"))
mock_federation_client.put_json.return_value = make_awaitable((200, "OK"))
# the tests assume that we are starting at unix time 1000
reactor.pump((1000,))
@ -98,7 +98,7 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
self.datastore = hs.get_datastores().main
self.datastore.get_destination_retry_timings = Mock(
return_value=defer.succeed(None)
return_value=make_awaitable(None)
)
self.datastore.get_device_updates_by_remote = Mock(

6
tests/handlers/test_user_directory.py
View file

@ -15,7 +15,6 @@ from typing import Tuple
from unittest.mock import Mock, patch
from urllib.parse import quote
from twisted.internet import defer
from twisted.test.proto_helpers import MemoryReactor
import synapse.rest.admin
@ -30,6 +29,7 @@ from synapse.util import Clock
from tests import unittest
from tests.storage.test_user_directory import GetUserDirectoryTables
from tests.test_utils import make_awaitable
from tests.test_utils.event_injection import inject_member_event
from tests.unittest import override_config
@ -439,7 +439,7 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase):
)
)
mock_remove_from_user_dir = Mock(return_value=defer.succeed(None))
mock_remove_from_user_dir = Mock(return_value=make_awaitable(None))
with patch.object(
self.store, "remove_from_user_dir", mock_remove_from_user_dir
):
@ -454,7 +454,7 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase):
self.store.register_user(user_id=r_user_id, password_hash=None)
)
mock_remove_from_user_dir = Mock(return_value=defer.succeed(None))
mock_remove_from_user_dir = Mock(return_value=make_awaitable(None))
with patch.object(
self.store, "remove_from_user_dir", mock_remove_from_user_dir
):

4
tests/rest/client/test_presence.py
View file

@ -14,7 +14,6 @@
from http import HTTPStatus
from unittest.mock import Mock
from twisted.internet import defer
from twisted.test.proto_helpers import MemoryReactor
from synapse.handlers.presence import PresenceHandler
@ -24,6 +23,7 @@ from synapse.types import UserID
from synapse.util import Clock
from tests import unittest
from tests.test_utils import make_awaitable
class PresenceTestCase(unittest.HomeserverTestCase):
@ -37,7 +37,7 @@ class PresenceTestCase(unittest.HomeserverTestCase):
def make_homeserver(self, reactor: MemoryReactor, clock: Clock) -> HomeServer:
presence_handler = Mock(spec=PresenceHandler)
presence_handler.set_state.return_value = defer.succeed(None)
presence_handler.set_state.return_value = make_awaitable(None)
hs = self.setup_test_homeserver(
"red",

7
tests/rest/client/test_rooms.py
View file

@ -22,7 +22,6 @@ from typing import Any, Dict, Iterable, List, Optional
from unittest.mock import Mock, call
from urllib import parse as urlparse
from twisted.internet import defer
from twisted.test.proto_helpers import MemoryReactor
import synapse.rest.admin
@ -1426,9 +1425,7 @@ class PublicRoomsTestRemoteSearchFallbackTestCase(unittest.HomeserverTestCase):
def test_simple(self) -> None:
"Simple test for searching rooms over federation"
self.federation_client.get_public_rooms.side_effect = lambda *a, **k: defer.succeed( # type: ignore[attr-defined]
{}
)
self.federation_client.get_public_rooms.return_value = make_awaitable({}) # type: ignore[attr-defined]
search_filter = {"generic_search_term": "foobar"}
@ -1456,7 +1453,7 @@ class PublicRoomsTestRemoteSearchFallbackTestCase(unittest.HomeserverTestCase):
# with a 404, when using search filters.
self.federation_client.get_public_rooms.side_effect = ( # type: ignore[attr-defined]
HttpResponseException(404, "Not Found", b""),
defer.succeed({}),
make_awaitable({}),
)
search_filter = {"generic_search_term": "foobar"}

7
tests/rest/client/test_transactions.py
View file

@ -22,6 +22,7 @@ from synapse.rest.client.transactions import CLEANUP_PERIOD_MS, HttpTransactionC
from synapse.util import Clock
from tests import unittest
from tests.test_utils import make_awaitable
from tests.utils import MockClock
@ -38,7 +39,7 @@ class HttpTransactionCacheTestCase(unittest.TestCase):
@defer.inlineCallbacks
def test_executes_given_function(self):
cb = Mock(return_value=defer.succeed(self.mock_http_response))
cb = Mock(return_value=make_awaitable(self.mock_http_response))
res = yield self.cache.fetch_or_execute(
self.mock_key, cb, "some_arg", keyword="arg"
)
@ -47,7 +48,7 @@ class HttpTransactionCacheTestCase(unittest.TestCase):
@defer.inlineCallbacks
def test_deduplicates_based_on_key(self):
cb = Mock(return_value=defer.succeed(self.mock_http_response))
cb = Mock(return_value=make_awaitable(self.mock_http_response))
for i in range(3): # invoke multiple times
res = yield self.cache.fetch_or_execute(
self.mock_key, cb, "some_arg", keyword="arg", changing_args=i
@ -130,7 +131,7 @@ class HttpTransactionCacheTestCase(unittest.TestCase):
@defer.inlineCallbacks
def test_cleans_up(self):
cb = Mock(return_value=defer.succeed(self.mock_http_response))
cb = Mock(return_value=make_awaitable(self.mock_http_response))
yield self.cache.fetch_or_execute(self.mock_key, cb, "an arg")
# should NOT have cleaned up yet
self.clock.advance_time_msec(CLEANUP_PERIOD_MS / 2)

28
tests/server_notices/test_resource_limits_server_notices.py
View file

@ -14,8 +14,6 @@
from unittest.mock import Mock
from twisted.internet import defer
from synapse.api.constants import EventTypes, LimitBlockingTypes, ServerNoticeMsgType
from synapse.api.errors import ResourceLimitError
from synapse.rest import admin
@ -68,16 +66,16 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
return_value=make_awaitable(1000)
)
self._rlsn._server_notices_manager.send_notice = Mock(
return_value=defer.succeed(Mock())
return_value=make_awaitable(Mock())
)
self._send_notice = self._rlsn._server_notices_manager.send_notice
self.user_id = "@user_id:test"
self._rlsn._server_notices_manager.get_or_create_notice_room_for_user = Mock(
return_value=defer.succeed("!something:localhost")
return_value=make_awaitable("!something:localhost")
)
self._rlsn._store.add_tag_to_room = Mock(return_value=defer.succeed(None))
self._rlsn._store.add_tag_to_room = Mock(return_value=make_awaitable(None))
self._rlsn._store.get_tags_for_room = Mock(return_value=make_awaitable({}))
@override_config({"hs_disabled": True})
@ -95,7 +93,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
def test_maybe_send_server_notice_to_user_remove_blocked_notice(self):
"""Test when user has blocked notice, but should have it removed"""
self._rlsn._auth.check_auth_blocking = Mock(return_value=defer.succeed(None))
self._rlsn._auth.check_auth_blocking = Mock(return_value=make_awaitable(None))
mock_event = Mock(
type=EventTypes.Message, content={"msgtype": ServerNoticeMsgType}
)
@ -111,7 +109,8 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
Test when user has blocked notice, but notice ought to be there (NOOP)
"""
self._rlsn._auth.check_auth_blocking = Mock(
return_value=defer.succeed(None), side_effect=ResourceLimitError(403, "foo")
return_value=make_awaitable(None),
side_effect=ResourceLimitError(403, "foo"),
)
mock_event = Mock(
@ -130,7 +129,8 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
Test when user does not have blocked notice, but should have one
"""
self._rlsn._auth.check_auth_blocking = Mock(
return_value=defer.succeed(None), side_effect=ResourceLimitError(403, "foo")
return_value=make_awaitable(None),
side_effect=ResourceLimitError(403, "foo"),
)
self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
@ -141,7 +141,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
"""
Test when user does not have blocked notice, nor should they (NOOP)
"""
self._rlsn._auth.check_auth_blocking = Mock(return_value=defer.succeed(None))
self._rlsn._auth.check_auth_blocking = Mock(return_value=make_awaitable(None))
self.get_success(self._rlsn.maybe_send_server_notice_to_user(self.user_id))
@ -152,7 +152,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
Test when user is not part of the MAU cohort - this should not ever
happen - but ...
"""
self._rlsn._auth.check_auth_blocking = Mock(return_value=defer.succeed(None))
self._rlsn._auth.check_auth_blocking = Mock(return_value=make_awaitable(None))
self._rlsn._store.user_last_seen_monthly_active = Mock(
return_value=make_awaitable(None)
)
@ -167,7 +167,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
an alert message is not sent into the room
"""
self._rlsn._auth.check_auth_blocking = Mock(
return_value=defer.succeed(None),
return_value=make_awaitable(None),
side_effect=ResourceLimitError(
403, "foo", limit_type=LimitBlockingTypes.MONTHLY_ACTIVE_USER
),
@ -182,7 +182,7 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
Test that when a server is disabled, that MAU limit alerting is ignored.
"""
self._rlsn._auth.check_auth_blocking = Mock(
return_value=defer.succeed(None),
return_value=make_awaitable(None),
side_effect=ResourceLimitError(
403, "foo", limit_type=LimitBlockingTypes.HS_DISABLED
),
@ -199,14 +199,14 @@ class TestResourceLimitsServerNotices(unittest.HomeserverTestCase):
is suppressed that the room is returned to an unblocked state.
"""
self._rlsn._auth.check_auth_blocking = Mock(
return_value=defer.succeed(None),
return_value=make_awaitable(None),
side_effect=ResourceLimitError(
403, "foo", limit_type=LimitBlockingTypes.MONTHLY_ACTIVE_USER
),
)
self._rlsn._server_notices_manager.__is_room_currently_blocked = Mock(
return_value=defer.succeed((True, []))
return_value=make_awaitable((True, []))
)
mock_event = Mock(

9
tests/storage/test_monthly_active_users.py
View file

@ -14,7 +14,6 @@
from typing import Any, Dict, List
from unittest.mock import Mock
from twisted.internet import defer
from twisted.test.proto_helpers import MemoryReactor
from synapse.api.constants import UserTypes
@ -259,10 +258,10 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
def test_populate_monthly_users_should_update(self):
self.store.upsert_monthly_active_user = Mock(return_value=make_awaitable(None)) # type: ignore[assignment]
self.store.is_trial_user = Mock(return_value=defer.succeed(False)) # type: ignore[assignment]
self.store.is_trial_user = Mock(return_value=make_awaitable(False)) # type: ignore[assignment]
self.store.user_last_seen_monthly_active = Mock(
return_value=defer.succeed(None)
return_value=make_awaitable(None)
)
d = self.store.populate_monthly_active_users("user_id")
self.get_success(d)
@ -272,9 +271,9 @@ class MonthlyActiveUsersTestCase(unittest.HomeserverTestCase):
def test_populate_monthly_users_should_not_update(self):
self.store.upsert_monthly_active_user = Mock(return_value=make_awaitable(None)) # type: ignore[assignment]
self.store.is_trial_user = Mock(return_value=defer.succeed(False)) # type: ignore[assignment]
self.store.is_trial_user = Mock(return_value=make_awaitable(False)) # type: ignore[assignment]
self.store.user_last_seen_monthly_active = Mock(
return_value=defer.succeed(self.hs.get_clock().time_msec())
return_value=make_awaitable(self.hs.get_clock().time_msec())
)
d = self.store.populate_monthly_active_users("user_id")

2
tests/test_federation.py
View file

@ -233,7 +233,7 @@ class MessageAcceptTests(unittest.HomeserverTestCase):
# Register mock device list retrieval on the federation client.
federation_client = self.homeserver.get_federation_client()
federation_client.query_user_devices = Mock(
return_value=succeed(
return_value=make_awaitable(
{
"user_id": remote_user_id,
"stream_id": 1,