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-rw-r--r--changelog.d/12505.misc1
-rw-r--r--synapse/logging/context.py26
-rw-r--r--tests/federation/test_federation_client.py2
-rw-r--r--tests/federation/test_federation_sender.py2
-rw-r--r--tests/handlers/test_e2e_keys.py7
-rw-r--r--tests/handlers/test_password_providers.py34
-rw-r--r--tests/handlers/test_typing.py6
-rw-r--r--tests/handlers/test_user_directory.py6
-rw-r--r--tests/rest/client/test_presence.py4
-rw-r--r--tests/rest/client/test_rooms.py7
-rw-r--r--tests/rest/client/test_transactions.py7
-rw-r--r--tests/server_notices/test_resource_limits_server_notices.py28
-rw-r--r--tests/storage/test_monthly_active_users.py9
-rw-r--r--tests/test_federation.py2
14 files changed, 72 insertions, 69 deletions
diff --git a/changelog.d/12505.misc b/changelog.d/12505.misc
new file mode 100644
index 0000000000..a691d7962f
--- /dev/null
+++ b/changelog.d/12505.misc
@@ -0,0 +1 @@
+Use `make_awaitable` instead of `defer.succeed` for return values of mocks in tests.
diff --git a/synapse/logging/context.py b/synapse/logging/context.py
index 88cd8a9e1c..fd9cb97920 100644
--- a/synapse/logging/context.py
+++ b/synapse/logging/context.py
@@ -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
diff --git a/tests/federation/test_federation_client.py b/tests/federation/test_federation_client.py
index ec8864dafe..268a48d7ba 100644
--- a/tests/federation/test_federation_client.py
+++ b/tests/federation/test_federation_client.py
@@ -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": [
diff --git a/tests/federation/test_federation_sender.py b/tests/federation/test_federation_sender.py
index 91f982518e..6b26353d5e 100644
--- a/tests/federation/test_federation_sender.py
+++ b/tests/federation/test_federation_sender.py
@@ -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",
diff --git a/tests/handlers/test_e2e_keys.py b/tests/handlers/test_e2e_keys.py
index 8c74ed1fcf..1e6ad4b663 100644
--- a/tests/handlers/test_e2e_keys.py
+++ b/tests/handlers/test_e2e_keys.py
@@ -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,
diff --git a/tests/handlers/test_password_providers.py b/tests/handlers/test_password_providers.py
index d401fda938..addf14fa2b 100644
--- a/tests/handlers/test_password_providers.py
+++ b/tests/handlers/test_password_providers.py
@@ -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="")
diff --git a/tests/handlers/test_typing.py b/tests/handlers/test_typing.py
index ffd5c4cb93..5f2e26a5fc 100644
--- a/tests/handlers/test_typing.py
+++ b/tests/handlers/test_typing.py
@@ -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(
diff --git a/tests/handlers/test_user_directory.py b/tests/handlers/test_user_directory.py
index c6e501c7be..96e2e3039b 100644
--- a/tests/handlers/test_user_directory.py
+++ b/tests/handlers/test_user_directory.py
@@ -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
         ):
diff --git a/tests/rest/client/test_presence.py b/tests/rest/client/test_presence.py
index 0abe378fe4..b3738a0304 100644
--- a/tests/rest/client/test_presence.py
+++ b/tests/rest/client/test_presence.py
@@ -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",
diff --git a/tests/rest/client/test_rooms.py b/tests/rest/client/test_rooms.py
index 6ff79b9e2e..9443daa056 100644
--- a/tests/rest/client/test_rooms.py
+++ b/tests/rest/client/test_rooms.py
@@ -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"}
diff --git a/tests/rest/client/test_transactions.py b/tests/rest/client/test_transactions.py
index 8d8251b2ac..21a1ca2a68 100644
--- a/tests/rest/client/test_transactions.py
+++ b/tests/rest/client/test_transactions.py
@@ -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)
diff --git a/tests/server_notices/test_resource_limits_server_notices.py b/tests/server_notices/test_resource_limits_server_notices.py
index 02b96c9e6e..9ee9509d3a 100644
--- a/tests/server_notices/test_resource_limits_server_notices.py
+++ b/tests/server_notices/test_resource_limits_server_notices.py
@@ -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(
diff --git a/tests/storage/test_monthly_active_users.py b/tests/storage/test_monthly_active_users.py
index 60c8d37594..0fbf465670 100644
--- a/tests/storage/test_monthly_active_users.py
+++ b/tests/storage/test_monthly_active_users.py
@@ -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")
diff --git a/tests/test_federation.py b/tests/test_federation.py
index c39816de85..0cbef70bfa 100644
--- a/tests/test_federation.py
+++ b/tests/test_federation.py
@@ -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,