Merge branch 'develop' of github.com:matrix-org/synapse into erikj/refactor_state_handler

10 files changed, 478 insertions, 431 deletions

diff --git a/tests/handlers/test_appservice.py b/tests/handlers/test_appservice.py
index 57c0771cf3..ba7148ec01 100644
--- a/tests/handlers/test_appservice.py
+++ b/tests/handlers/test_appservice.py
@@ -45,20 +45,18 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         services = [
             self._mkservice(is_interested=False),
             interested_service,
-            self._mkservice(is_interested=False)
+            self._mkservice(is_interested=False),
         ]
 
         self.mock_store.get_app_services = Mock(return_value=services)
         self.mock_store.get_user_by_id = Mock(return_value=[])
 
         event = Mock(
-            sender="@someone:anywhere",
-            type="m.room.message",
-            room_id="!foo:bar"
+            sender="@someone:anywhere", type="m.room.message", room_id="!foo:bar"
         )
         self.mock_store.get_new_events_for_appservice.side_effect = [
             (0, [event]),
-            (0, [])
+            (0, []),
         ]
         self.mock_as_api.push = Mock()
         yield self.handler.notify_interested_services(0)
@@ -74,21 +72,15 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         self.mock_store.get_app_services = Mock(return_value=services)
         self.mock_store.get_user_by_id = Mock(return_value=None)
 
-        event = Mock(
-            sender=user_id,
-            type="m.room.message",
-            room_id="!foo:bar"
-        )
+        event = Mock(sender=user_id, type="m.room.message", room_id="!foo:bar")
         self.mock_as_api.push = Mock()
         self.mock_as_api.query_user = Mock()
         self.mock_store.get_new_events_for_appservice.side_effect = [
             (0, [event]),
-            (0, [])
+            (0, []),
         ]
         yield self.handler.notify_interested_services(0)
-        self.mock_as_api.query_user.assert_called_once_with(
-            services[0], user_id
-        )
+        self.mock_as_api.query_user.assert_called_once_with(services[0], user_id)
 
     @defer.inlineCallbacks
     def test_query_user_exists_known_user(self):
@@ -96,25 +88,19 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         services = [self._mkservice(is_interested=True)]
         services[0].is_interested_in_user = Mock(return_value=True)
         self.mock_store.get_app_services = Mock(return_value=services)
-        self.mock_store.get_user_by_id = Mock(return_value={
-            "name": user_id
-        })
+        self.mock_store.get_user_by_id = Mock(return_value={"name": user_id})
 
-        event = Mock(
-            sender=user_id,
-            type="m.room.message",
-            room_id="!foo:bar"
-        )
+        event = Mock(sender=user_id, type="m.room.message", room_id="!foo:bar")
         self.mock_as_api.push = Mock()
         self.mock_as_api.query_user = Mock()
         self.mock_store.get_new_events_for_appservice.side_effect = [
             (0, [event]),
-            (0, [])
+            (0, []),
         ]
         yield self.handler.notify_interested_services(0)
         self.assertFalse(
             self.mock_as_api.query_user.called,
-            "query_user called when it shouldn't have been."
+            "query_user called when it shouldn't have been.",
         )
 
     @defer.inlineCallbacks
@@ -129,7 +115,7 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         services = [
             self._mkservice_alias(is_interested_in_alias=False),
             interested_service,
-            self._mkservice_alias(is_interested_in_alias=False)
+            self._mkservice_alias(is_interested_in_alias=False),
         ]
 
         self.mock_store.get_app_services = Mock(return_value=services)
@@ -140,8 +126,7 @@ class AppServiceHandlerTestCase(unittest.TestCase):
         result = yield self.handler.query_room_alias_exists(room_alias)
 
         self.mock_as_api.query_alias.assert_called_once_with(
-            interested_service,
-            room_alias_str
+            interested_service, room_alias_str
         )
         self.assertEquals(result.room_id, room_id)
         self.assertEquals(result.servers, servers)
diff --git a/tests/handlers/test_auth.py b/tests/handlers/test_auth.py
index 8a9bf2d5fd..1e39fe0ec2 100644
--- a/tests/handlers/test_auth.py
+++ b/tests/handlers/test_auth.py
@@ -20,7 +20,7 @@ from twisted.internet import defer
 
 import synapse
 import synapse.api.errors
-from synapse.api.errors import AuthError
+from synapse.api.errors import ResourceLimitError
 from synapse.handlers.auth import AuthHandler
 
 from tests import unittest
@@ -35,7 +35,7 @@ class AuthHandlers(object):
 class AuthTestCase(unittest.TestCase):
     @defer.inlineCallbacks
     def setUp(self):
-        self.hs = yield setup_test_homeserver(handlers=None)
+        self.hs = yield setup_test_homeserver(self.addCleanup, handlers=None)
         self.hs.handlers = AuthHandlers(self.hs)
         self.auth_handler = self.hs.handlers.auth_handler
         self.macaroon_generator = self.hs.get_macaroon_generator()
@@ -81,9 +81,7 @@ class AuthTestCase(unittest.TestCase):
     def test_short_term_login_token_gives_user_id(self):
         self.hs.clock.now = 1000
 
-        token = self.macaroon_generator.generate_short_term_login_token(
-            "a_user", 5000
-        )
+        token = self.macaroon_generator.generate_short_term_login_token("a_user", 5000)
         user_id = yield self.auth_handler.validate_short_term_login_token_and_get_user_id(
             token
         )
@@ -98,17 +96,13 @@ class AuthTestCase(unittest.TestCase):
 
     @defer.inlineCallbacks
     def test_short_term_login_token_cannot_replace_user_id(self):
-        token = self.macaroon_generator.generate_short_term_login_token(
-            "a_user", 5000
-        )
+        token = self.macaroon_generator.generate_short_term_login_token("a_user", 5000)
         macaroon = pymacaroons.Macaroon.deserialize(token)
 
         user_id = yield self.auth_handler.validate_short_term_login_token_and_get_user_id(
             macaroon.serialize()
         )
-        self.assertEqual(
-            "a_user", user_id
-        )
+        self.assertEqual("a_user", user_id)
 
         # add another "user_id" caveat, which might allow us to override the
         # user_id.
@@ -130,22 +124,58 @@ class AuthTestCase(unittest.TestCase):
         )
 
     @defer.inlineCallbacks
-    def test_mau_limits_exceeded(self):
+    def test_mau_limits_exceeded_large(self):
         self.hs.config.limit_usage_by_mau = True
         self.hs.get_datastore().get_monthly_active_count = Mock(
             return_value=defer.succeed(self.large_number_of_users)
         )
 
-        with self.assertRaises(AuthError):
+        with self.assertRaises(ResourceLimitError):
             yield self.auth_handler.get_access_token_for_user_id('user_a')
 
         self.hs.get_datastore().get_monthly_active_count = Mock(
             return_value=defer.succeed(self.large_number_of_users)
         )
-        with self.assertRaises(AuthError):
+        with self.assertRaises(ResourceLimitError):
+            yield self.auth_handler.validate_short_term_login_token_and_get_user_id(
+                self._get_macaroon().serialize()
+            )
+
+    @defer.inlineCallbacks
+    def test_mau_limits_parity(self):
+        self.hs.config.limit_usage_by_mau = True
+
+        # If not in monthly active cohort
+        self.hs.get_datastore().get_monthly_active_count = Mock(
+            return_value=defer.succeed(self.hs.config.max_mau_value)
+        )
+        with self.assertRaises(ResourceLimitError):
+            yield self.auth_handler.get_access_token_for_user_id('user_a')
+
+        self.hs.get_datastore().get_monthly_active_count = Mock(
+            return_value=defer.succeed(self.hs.config.max_mau_value)
+        )
+        with self.assertRaises(ResourceLimitError):
             yield self.auth_handler.validate_short_term_login_token_and_get_user_id(
                 self._get_macaroon().serialize()
             )
+        # If in monthly active cohort
+        self.hs.get_datastore().user_last_seen_monthly_active = Mock(
+            return_value=defer.succeed(self.hs.get_clock().time_msec())
+        )
+        self.hs.get_datastore().get_monthly_active_count = Mock(
+            return_value=defer.succeed(self.hs.config.max_mau_value)
+        )
+        yield self.auth_handler.get_access_token_for_user_id('user_a')
+        self.hs.get_datastore().user_last_seen_monthly_active = Mock(
+            return_value=defer.succeed(self.hs.get_clock().time_msec())
+        )
+        self.hs.get_datastore().get_monthly_active_count = Mock(
+            return_value=defer.succeed(self.hs.config.max_mau_value)
+        )
+        yield self.auth_handler.validate_short_term_login_token_and_get_user_id(
+            self._get_macaroon().serialize()
+        )
 
     @defer.inlineCallbacks
     def test_mau_limits_not_exceeded(self):
@@ -165,7 +195,5 @@ class AuthTestCase(unittest.TestCase):
         )
 
     def _get_macaroon(self):
-        token = self.macaroon_generator.generate_short_term_login_token(
-            "user_a", 5000
-        )
+        token = self.macaroon_generator.generate_short_term_login_token("user_a", 5000)
         return pymacaroons.Macaroon.deserialize(token)
diff --git a/tests/handlers/test_device.py b/tests/handlers/test_device.py
index 633a0b7f36..56e7acd37c 100644
--- a/tests/handlers/test_device.py
+++ b/tests/handlers/test_device.py
@@ -28,13 +28,13 @@ user2 = "@theresa:bbb"
 class DeviceTestCase(unittest.TestCase):
     def __init__(self, *args, **kwargs):
         super(DeviceTestCase, self).__init__(*args, **kwargs)
-        self.store = None    # type: synapse.storage.DataStore
+        self.store = None  # type: synapse.storage.DataStore
         self.handler = None  # type: synapse.handlers.device.DeviceHandler
-        self.clock = None    # type: utils.MockClock
+        self.clock = None  # type: utils.MockClock
 
     @defer.inlineCallbacks
     def setUp(self):
-        hs = yield utils.setup_test_homeserver()
+        hs = yield utils.setup_test_homeserver(self.addCleanup)
         self.handler = hs.get_device_handler()
         self.store = hs.get_datastore()
         self.clock = hs.get_clock()
@@ -44,7 +44,7 @@ class DeviceTestCase(unittest.TestCase):
         res = yield self.handler.check_device_registered(
             user_id="@boris:foo",
             device_id="fco",
-            initial_device_display_name="display name"
+            initial_device_display_name="display name",
         )
         self.assertEqual(res, "fco")
 
@@ -56,14 +56,14 @@ class DeviceTestCase(unittest.TestCase):
         res1 = yield self.handler.check_device_registered(
             user_id="@boris:foo",
             device_id="fco",
-            initial_device_display_name="display name"
+            initial_device_display_name="display name",
         )
         self.assertEqual(res1, "fco")
 
         res2 = yield self.handler.check_device_registered(
             user_id="@boris:foo",
             device_id="fco",
-            initial_device_display_name="new display name"
+            initial_device_display_name="new display name",
         )
         self.assertEqual(res2, "fco")
 
@@ -75,7 +75,7 @@ class DeviceTestCase(unittest.TestCase):
         device_id = yield self.handler.check_device_registered(
             user_id="@theresa:foo",
             device_id=None,
-            initial_device_display_name="display"
+            initial_device_display_name="display",
         )
 
         dev = yield self.handler.store.get_device("@theresa:foo", device_id)
@@ -87,43 +87,53 @@ class DeviceTestCase(unittest.TestCase):
 
         res = yield self.handler.get_devices_by_user(user1)
         self.assertEqual(3, len(res))
-        device_map = {
-            d["device_id"]: d for d in res
-        }
-        self.assertDictContainsSubset({
-            "user_id": user1,
-            "device_id": "xyz",
-            "display_name": "display 0",
-            "last_seen_ip": None,
-            "last_seen_ts": None,
-        }, device_map["xyz"])
-        self.assertDictContainsSubset({
-            "user_id": user1,
-            "device_id": "fco",
-            "display_name": "display 1",
-            "last_seen_ip": "ip1",
-            "last_seen_ts": 1000000,
-        }, device_map["fco"])
-        self.assertDictContainsSubset({
-            "user_id": user1,
-            "device_id": "abc",
-            "display_name": "display 2",
-            "last_seen_ip": "ip3",
-            "last_seen_ts": 3000000,
-        }, device_map["abc"])
+        device_map = {d["device_id"]: d for d in res}
+        self.assertDictContainsSubset(
+            {
+                "user_id": user1,
+                "device_id": "xyz",
+                "display_name": "display 0",
+                "last_seen_ip": None,
+                "last_seen_ts": None,
+            },
+            device_map["xyz"],
+        )
+        self.assertDictContainsSubset(
+            {
+                "user_id": user1,
+                "device_id": "fco",
+                "display_name": "display 1",
+                "last_seen_ip": "ip1",
+                "last_seen_ts": 1000000,
+            },
+            device_map["fco"],
+        )
+        self.assertDictContainsSubset(
+            {
+                "user_id": user1,
+                "device_id": "abc",
+                "display_name": "display 2",
+                "last_seen_ip": "ip3",
+                "last_seen_ts": 3000000,
+            },
+            device_map["abc"],
+        )
 
     @defer.inlineCallbacks
     def test_get_device(self):
         yield self._record_users()
 
         res = yield self.handler.get_device(user1, "abc")
-        self.assertDictContainsSubset({
-            "user_id": user1,
-            "device_id": "abc",
-            "display_name": "display 2",
-            "last_seen_ip": "ip3",
-            "last_seen_ts": 3000000,
-        }, res)
+        self.assertDictContainsSubset(
+            {
+                "user_id": user1,
+                "device_id": "abc",
+                "display_name": "display 2",
+                "last_seen_ip": "ip3",
+                "last_seen_ts": 3000000,
+            },
+            res,
+        )
 
     @defer.inlineCallbacks
     def test_delete_device(self):
@@ -153,8 +163,7 @@ class DeviceTestCase(unittest.TestCase):
     def test_update_unknown_device(self):
         update = {"display_name": "new_display"}
         with self.assertRaises(synapse.api.errors.NotFoundError):
-            yield self.handler.update_device("user_id", "unknown_device_id",
-                                             update)
+            yield self.handler.update_device("user_id", "unknown_device_id", update)
 
     @defer.inlineCallbacks
     def _record_users(self):
@@ -168,16 +177,17 @@ class DeviceTestCase(unittest.TestCase):
         yield self._record_user(user2, "def", "dispkay", "token4", "ip4")
 
     @defer.inlineCallbacks
-    def _record_user(self, user_id, device_id, display_name,
-                     access_token=None, ip=None):
+    def _record_user(
+        self, user_id, device_id, display_name, access_token=None, ip=None
+    ):
         device_id = yield self.handler.check_device_registered(
             user_id=user_id,
             device_id=device_id,
-            initial_device_display_name=display_name
+            initial_device_display_name=display_name,
         )
 
         if ip is not None:
             yield self.store.insert_client_ip(
-                user_id,
-                access_token, ip, "user_agent", device_id)
+                user_id, access_token, ip, "user_agent", device_id
+            )
             self.clock.advance_time(1000)
diff --git a/tests/handlers/test_directory.py b/tests/handlers/test_directory.py
index a353070316..ec7355688b 100644
--- a/tests/handlers/test_directory.py
+++ b/tests/handlers/test_directory.py
@@ -42,9 +42,11 @@ class DirectoryTestCase(unittest.TestCase):
 
         def register_query_handler(query_type, handler):
             self.query_handlers[query_type] = handler
+
         self.mock_registry.register_query_handler = register_query_handler
 
         hs = yield setup_test_homeserver(
+            self.addCleanup,
             http_client=None,
             resource_for_federation=Mock(),
             federation_client=self.mock_federation,
@@ -68,10 +70,7 @@ class DirectoryTestCase(unittest.TestCase):
 
         result = yield self.handler.get_association(self.my_room)
 
-        self.assertEquals({
-            "room_id": "!8765qwer:test",
-            "servers": ["test"],
-        }, result)
+        self.assertEquals({"room_id": "!8765qwer:test", "servers": ["test"]}, result)
 
     @defer.inlineCallbacks
     def test_get_remote_association(self):
@@ -81,16 +80,13 @@ class DirectoryTestCase(unittest.TestCase):
 
         result = yield self.handler.get_association(self.remote_room)
 
-        self.assertEquals({
-            "room_id": "!8765qwer:test",
-            "servers": ["test", "remote"],
-        }, result)
+        self.assertEquals(
+            {"room_id": "!8765qwer:test", "servers": ["test", "remote"]}, result
+        )
         self.mock_federation.make_query.assert_called_with(
             destination="remote",
             query_type="directory",
-            args={
-                "room_alias": "#another:remote",
-            },
+            args={"room_alias": "#another:remote"},
             retry_on_dns_fail=False,
             ignore_backoff=True,
         )
@@ -105,7 +101,4 @@ class DirectoryTestCase(unittest.TestCase):
             {"room_alias": "#your-room:test"}
         )
 
-        self.assertEquals({
-            "room_id": "!8765asdf:test",
-            "servers": ["test"],
-        }, response)
+        self.assertEquals({"room_id": "!8765asdf:test", "servers": ["test"]}, response)
diff --git a/tests/handlers/test_e2e_keys.py b/tests/handlers/test_e2e_keys.py
index ca1542236d..8dccc6826e 100644
--- a/tests/handlers/test_e2e_keys.py
+++ b/tests/handlers/test_e2e_keys.py
@@ -28,14 +28,13 @@ from tests import unittest, utils
 class E2eKeysHandlerTestCase(unittest.TestCase):
     def __init__(self, *args, **kwargs):
         super(E2eKeysHandlerTestCase, self).__init__(*args, **kwargs)
-        self.hs = None       # type: synapse.server.HomeServer
+        self.hs = None  # type: synapse.server.HomeServer
         self.handler = None  # type: synapse.handlers.e2e_keys.E2eKeysHandler
 
     @defer.inlineCallbacks
     def setUp(self):
         self.hs = yield utils.setup_test_homeserver(
-            handlers=None,
-            federation_client=mock.Mock(),
+            self.addCleanup, handlers=None, federation_client=mock.Mock()
         )
         self.handler = synapse.handlers.e2e_keys.E2eKeysHandler(self.hs)
 
@@ -54,30 +53,21 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
         device_id = "xyz"
         keys = {
             "alg1:k1": "key1",
-            "alg2:k2": {
-                "key": "key2",
-                "signatures": {"k1": "sig1"}
-            },
-            "alg2:k3": {
-                "key": "key3",
-            },
+            "alg2:k2": {"key": "key2", "signatures": {"k1": "sig1"}},
+            "alg2:k3": {"key": "key3"},
         }
 
         res = yield self.handler.upload_keys_for_user(
-            local_user, device_id, {"one_time_keys": keys},
+            local_user, device_id, {"one_time_keys": keys}
         )
-        self.assertDictEqual(res, {
-            "one_time_key_counts": {"alg1": 1, "alg2": 2}
-        })
+        self.assertDictEqual(res, {"one_time_key_counts": {"alg1": 1, "alg2": 2}})
 
         # we should be able to change the signature without a problem
         keys["alg2:k2"]["signatures"]["k1"] = "sig2"
         res = yield self.handler.upload_keys_for_user(
-            local_user, device_id, {"one_time_keys": keys},
+            local_user, device_id, {"one_time_keys": keys}
         )
-        self.assertDictEqual(res, {
-            "one_time_key_counts": {"alg1": 1, "alg2": 2}
-        })
+        self.assertDictEqual(res, {"one_time_key_counts": {"alg1": 1, "alg2": 2}})
 
     @defer.inlineCallbacks
     def test_change_one_time_keys(self):
@@ -87,25 +77,18 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
         device_id = "xyz"
         keys = {
             "alg1:k1": "key1",
-            "alg2:k2": {
-                "key": "key2",
-                "signatures": {"k1": "sig1"}
-            },
-            "alg2:k3": {
-                "key": "key3",
-            },
+            "alg2:k2": {"key": "key2", "signatures": {"k1": "sig1"}},
+            "alg2:k3": {"key": "key3"},
         }
 
         res = yield self.handler.upload_keys_for_user(
-            local_user, device_id, {"one_time_keys": keys},
+            local_user, device_id, {"one_time_keys": keys}
         )
-        self.assertDictEqual(res, {
-            "one_time_key_counts": {"alg1": 1, "alg2": 2}
-        })
+        self.assertDictEqual(res, {"one_time_key_counts": {"alg1": 1, "alg2": 2}})
 
         try:
             yield self.handler.upload_keys_for_user(
-                local_user, device_id, {"one_time_keys": {"alg1:k1": "key2"}},
+                local_user, device_id, {"one_time_keys": {"alg1:k1": "key2"}}
             )
             self.fail("No error when changing string key")
         except errors.SynapseError:
@@ -113,7 +96,7 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
 
         try:
             yield self.handler.upload_keys_for_user(
-                local_user, device_id, {"one_time_keys": {"alg2:k3": "key2"}},
+                local_user, device_id, {"one_time_keys": {"alg2:k3": "key2"}}
             )
             self.fail("No error when replacing dict key with string")
         except errors.SynapseError:
@@ -121,9 +104,7 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
 
         try:
             yield self.handler.upload_keys_for_user(
-                local_user, device_id, {
-                    "one_time_keys": {"alg1:k1": {"key": "key"}}
-                },
+                local_user, device_id, {"one_time_keys": {"alg1:k1": {"key": "key"}}}
             )
             self.fail("No error when replacing string key with dict")
         except errors.SynapseError:
@@ -131,13 +112,12 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
 
         try:
             yield self.handler.upload_keys_for_user(
-                local_user, device_id, {
+                local_user,
+                device_id,
+                {
                     "one_time_keys": {
-                        "alg2:k2": {
-                            "key": "key3",
-                            "signatures": {"k1": "sig1"},
-                        }
-                    },
+                        "alg2:k2": {"key": "key3", "signatures": {"k1": "sig1"}}
+                    }
                 },
             )
             self.fail("No error when replacing dict key")
@@ -148,31 +128,20 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
     def test_claim_one_time_key(self):
         local_user = "@boris:" + self.hs.hostname
         device_id = "xyz"
-        keys = {
-            "alg1:k1": "key1",
-        }
+        keys = {"alg1:k1": "key1"}
 
         res = yield self.handler.upload_keys_for_user(
-            local_user, device_id, {"one_time_keys": keys},
+            local_user, device_id, {"one_time_keys": keys}
+        )
+        self.assertDictEqual(res, {"one_time_key_counts": {"alg1": 1}})
+
+        res2 = yield self.handler.claim_one_time_keys(
+            {"one_time_keys": {local_user: {device_id: "alg1"}}}, timeout=None
+        )
+        self.assertEqual(
+            res2,
+            {
+                "failures": {},
+                "one_time_keys": {local_user: {device_id: {"alg1:k1": "key1"}}},
+            },
         )
-        self.assertDictEqual(res, {
-            "one_time_key_counts": {"alg1": 1}
-        })
-
-        res2 = yield self.handler.claim_one_time_keys({
-            "one_time_keys": {
-                local_user: {
-                    device_id: "alg1"
-                }
-            }
-        }, timeout=None)
-        self.assertEqual(res2, {
-            "failures": {},
-            "one_time_keys": {
-                local_user: {
-                    device_id: {
-                        "alg1:k1": "key1"
-                    }
-                }
-            }
-        })
diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py
index 121ce78634..fc2b646ba2 100644
--- a/tests/handlers/test_presence.py
+++ b/tests/handlers/test_presence.py
@@ -39,8 +39,7 @@ class PresenceUpdateTestCase(unittest.TestCase):
 
         prev_state = UserPresenceState.default(user_id)
         new_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-            last_active_ts=now,
+            state=PresenceState.ONLINE, last_active_ts=now
         )
 
         state, persist_and_notify, federation_ping = handle_update(
@@ -54,23 +53,22 @@ class PresenceUpdateTestCase(unittest.TestCase):
         self.assertEquals(state.last_federation_update_ts, now)
 
         self.assertEquals(wheel_timer.insert.call_count, 3)
-        wheel_timer.insert.assert_has_calls([
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_active_ts + IDLE_TIMER
-            ),
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT
-            ),
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_active_ts + LAST_ACTIVE_GRANULARITY
-            ),
-        ], any_order=True)
+        wheel_timer.insert.assert_has_calls(
+            [
+                call(now=now, obj=user_id, then=new_state.last_active_ts + IDLE_TIMER),
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT,
+                ),
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_active_ts + LAST_ACTIVE_GRANULARITY,
+                ),
+            ],
+            any_order=True,
+        )
 
     def test_online_to_online(self):
         wheel_timer = Mock()
@@ -79,14 +77,11 @@ class PresenceUpdateTestCase(unittest.TestCase):
 
         prev_state = UserPresenceState.default(user_id)
         prev_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-            last_active_ts=now,
-            currently_active=True,
+            state=PresenceState.ONLINE, last_active_ts=now, currently_active=True
         )
 
         new_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-            last_active_ts=now,
+            state=PresenceState.ONLINE, last_active_ts=now
         )
 
         state, persist_and_notify, federation_ping = handle_update(
@@ -101,23 +96,22 @@ class PresenceUpdateTestCase(unittest.TestCase):
         self.assertEquals(state.last_federation_update_ts, now)
 
         self.assertEquals(wheel_timer.insert.call_count, 3)
-        wheel_timer.insert.assert_has_calls([
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_active_ts + IDLE_TIMER
-            ),
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT
-            ),
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_active_ts + LAST_ACTIVE_GRANULARITY
-            ),
-        ], any_order=True)
+        wheel_timer.insert.assert_has_calls(
+            [
+                call(now=now, obj=user_id, then=new_state.last_active_ts + IDLE_TIMER),
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT,
+                ),
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_active_ts + LAST_ACTIVE_GRANULARITY,
+                ),
+            ],
+            any_order=True,
+        )
 
     def test_online_to_online_last_active_noop(self):
         wheel_timer = Mock()
@@ -132,8 +126,7 @@ class PresenceUpdateTestCase(unittest.TestCase):
         )
 
         new_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-            last_active_ts=now,
+            state=PresenceState.ONLINE, last_active_ts=now
         )
 
         state, persist_and_notify, federation_ping = handle_update(
@@ -148,23 +141,22 @@ class PresenceUpdateTestCase(unittest.TestCase):
         self.assertEquals(state.last_federation_update_ts, now)
 
         self.assertEquals(wheel_timer.insert.call_count, 3)
-        wheel_timer.insert.assert_has_calls([
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_active_ts + IDLE_TIMER
-            ),
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT
-            ),
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_active_ts + LAST_ACTIVE_GRANULARITY
-            ),
-        ], any_order=True)
+        wheel_timer.insert.assert_has_calls(
+            [
+                call(now=now, obj=user_id, then=new_state.last_active_ts + IDLE_TIMER),
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT,
+                ),
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_active_ts + LAST_ACTIVE_GRANULARITY,
+                ),
+            ],
+            any_order=True,
+        )
 
     def test_online_to_online_last_active(self):
         wheel_timer = Mock()
@@ -178,9 +170,7 @@ class PresenceUpdateTestCase(unittest.TestCase):
             currently_active=True,
         )
 
-        new_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-        )
+        new_state = prev_state.copy_and_replace(state=PresenceState.ONLINE)
 
         state, persist_and_notify, federation_ping = handle_update(
             prev_state, new_state, is_mine=True, wheel_timer=wheel_timer, now=now
@@ -193,18 +183,17 @@ class PresenceUpdateTestCase(unittest.TestCase):
         self.assertEquals(state.last_federation_update_ts, now)
 
         self.assertEquals(wheel_timer.insert.call_count, 2)
-        wheel_timer.insert.assert_has_calls([
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_active_ts + IDLE_TIMER
-            ),
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT
-            )
-        ], any_order=True)
+        wheel_timer.insert.assert_has_calls(
+            [
+                call(now=now, obj=user_id, then=new_state.last_active_ts + IDLE_TIMER),
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT,
+                ),
+            ],
+            any_order=True,
+        )
 
     def test_remote_ping_timer(self):
         wheel_timer = Mock()
@@ -213,13 +202,10 @@ class PresenceUpdateTestCase(unittest.TestCase):
 
         prev_state = UserPresenceState.default(user_id)
         prev_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-            last_active_ts=now,
+            state=PresenceState.ONLINE, last_active_ts=now
         )
 
-        new_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-        )
+        new_state = prev_state.copy_and_replace(state=PresenceState.ONLINE)
 
         state, persist_and_notify, federation_ping = handle_update(
             prev_state, new_state, is_mine=False, wheel_timer=wheel_timer, now=now
@@ -232,13 +218,16 @@ class PresenceUpdateTestCase(unittest.TestCase):
         self.assertEquals(new_state.status_msg, state.status_msg)
 
         self.assertEquals(wheel_timer.insert.call_count, 1)
-        wheel_timer.insert.assert_has_calls([
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_federation_update_ts + FEDERATION_TIMEOUT
-            ),
-        ], any_order=True)
+        wheel_timer.insert.assert_has_calls(
+            [
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_federation_update_ts + FEDERATION_TIMEOUT,
+                )
+            ],
+            any_order=True,
+        )
 
     def test_online_to_offline(self):
         wheel_timer = Mock()
@@ -247,14 +236,10 @@ class PresenceUpdateTestCase(unittest.TestCase):
 
         prev_state = UserPresenceState.default(user_id)
         prev_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-            last_active_ts=now,
-            currently_active=True,
+            state=PresenceState.ONLINE, last_active_ts=now, currently_active=True
         )
 
-        new_state = prev_state.copy_and_replace(
-            state=PresenceState.OFFLINE,
-        )
+        new_state = prev_state.copy_and_replace(state=PresenceState.OFFLINE)
 
         state, persist_and_notify, federation_ping = handle_update(
             prev_state, new_state, is_mine=True, wheel_timer=wheel_timer, now=now
@@ -273,14 +258,10 @@ class PresenceUpdateTestCase(unittest.TestCase):
 
         prev_state = UserPresenceState.default(user_id)
         prev_state = prev_state.copy_and_replace(
-            state=PresenceState.ONLINE,
-            last_active_ts=now,
-            currently_active=True,
+            state=PresenceState.ONLINE, last_active_ts=now, currently_active=True
         )
 
-        new_state = prev_state.copy_and_replace(
-            state=PresenceState.UNAVAILABLE,
-        )
+        new_state = prev_state.copy_and_replace(state=PresenceState.UNAVAILABLE)
 
         state, persist_and_notify, federation_ping = handle_update(
             prev_state, new_state, is_mine=True, wheel_timer=wheel_timer, now=now
@@ -293,13 +274,16 @@ class PresenceUpdateTestCase(unittest.TestCase):
         self.assertEquals(new_state.status_msg, state.status_msg)
 
         self.assertEquals(wheel_timer.insert.call_count, 1)
-        wheel_timer.insert.assert_has_calls([
-            call(
-                now=now,
-                obj=user_id,
-                then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT
-            )
-        ], any_order=True)
+        wheel_timer.insert.assert_has_calls(
+            [
+                call(
+                    now=now,
+                    obj=user_id,
+                    then=new_state.last_user_sync_ts + SYNC_ONLINE_TIMEOUT,
+                )
+            ],
+            any_order=True,
+        )
 
 
 class PresenceTimeoutTestCase(unittest.TestCase):
@@ -314,9 +298,7 @@ class PresenceTimeoutTestCase(unittest.TestCase):
             last_user_sync_ts=now,
         )
 
-        new_state = handle_timeout(
-            state, is_mine=True, syncing_user_ids=set(), now=now
-        )
+        new_state = handle_timeout(state, is_mine=True, syncing_user_ids=set(), now=now)
 
         self.assertIsNotNone(new_state)
         self.assertEquals(new_state.state, PresenceState.UNAVAILABLE)
@@ -332,9 +314,7 @@ class PresenceTimeoutTestCase(unittest.TestCase):
             last_user_sync_ts=now - SYNC_ONLINE_TIMEOUT - 1,
         )
 
-        new_state = handle_timeout(
-            state, is_mine=True, syncing_user_ids=set(), now=now
-        )
+        new_state = handle_timeout(state, is_mine=True, syncing_user_ids=set(), now=now)
 
         self.assertIsNotNone(new_state)
         self.assertEquals(new_state.state, PresenceState.OFFLINE)
@@ -369,9 +349,7 @@ class PresenceTimeoutTestCase(unittest.TestCase):
             last_federation_update_ts=now - FEDERATION_PING_INTERVAL - 1,
         )
 
-        new_state = handle_timeout(
-            state, is_mine=True, syncing_user_ids=set(), now=now
-        )
+        new_state = handle_timeout(state, is_mine=True, syncing_user_ids=set(), now=now)
 
         self.assertIsNotNone(new_state)
         self.assertEquals(new_state, new_state)
@@ -388,9 +366,7 @@ class PresenceTimeoutTestCase(unittest.TestCase):
             last_federation_update_ts=now,
         )
 
-        new_state = handle_timeout(
-            state, is_mine=True, syncing_user_ids=set(), now=now
-        )
+        new_state = handle_timeout(state, is_mine=True, syncing_user_ids=set(), now=now)
 
         self.assertIsNone(new_state)
 
@@ -425,9 +401,7 @@ class PresenceTimeoutTestCase(unittest.TestCase):
             last_federation_update_ts=now,
         )
 
-        new_state = handle_timeout(
-            state, is_mine=True, syncing_user_ids=set(), now=now
-        )
+        new_state = handle_timeout(state, is_mine=True, syncing_user_ids=set(), now=now)
 
         self.assertIsNotNone(new_state)
         self.assertEquals(state, new_state)
diff --git a/tests/handlers/test_profile.py b/tests/handlers/test_profile.py
index dc17918a3d..62dc69003c 100644
--- a/tests/handlers/test_profile.py
+++ b/tests/handlers/test_profile.py
@@ -48,15 +48,14 @@ class ProfileTestCase(unittest.TestCase):
         self.mock_registry.register_query_handler = register_query_handler
 
         hs = yield setup_test_homeserver(
+            self.addCleanup,
             http_client=None,
             handlers=None,
             resource_for_federation=Mock(),
             federation_client=self.mock_federation,
             federation_server=Mock(),
             federation_registry=self.mock_registry,
-            ratelimiter=NonCallableMock(spec_set=[
-                "send_message",
-            ])
+            ratelimiter=NonCallableMock(spec_set=["send_message"]),
         )
 
         self.ratelimiter = hs.get_ratelimiter()
@@ -74,9 +73,7 @@ class ProfileTestCase(unittest.TestCase):
 
     @defer.inlineCallbacks
     def test_get_my_name(self):
-        yield self.store.set_profile_displayname(
-            self.frank.localpart, "Frank"
-        )
+        yield self.store.set_profile_displayname(self.frank.localpart, "Frank")
 
         displayname = yield self.handler.get_displayname(self.frank)
 
@@ -85,22 +82,18 @@ class ProfileTestCase(unittest.TestCase):
     @defer.inlineCallbacks
     def test_set_my_name(self):
         yield self.handler.set_displayname(
-            self.frank,
-            synapse.types.create_requester(self.frank),
-            "Frank Jr."
+            self.frank, synapse.types.create_requester(self.frank), "Frank Jr."
         )
 
         self.assertEquals(
             (yield self.store.get_profile_displayname(self.frank.localpart)),
-            "Frank Jr."
+            "Frank Jr.",
         )
 
     @defer.inlineCallbacks
     def test_set_my_name_noauth(self):
         d = self.handler.set_displayname(
-            self.frank,
-            synapse.types.create_requester(self.bob),
-            "Frank Jr."
+            self.frank, synapse.types.create_requester(self.bob), "Frank Jr."
         )
 
         yield self.assertFailure(d, AuthError)
@@ -145,11 +138,12 @@ class ProfileTestCase(unittest.TestCase):
     @defer.inlineCallbacks
     def test_set_my_avatar(self):
         yield self.handler.set_avatar_url(
-            self.frank, synapse.types.create_requester(self.frank),
-            "http://my.server/pic.gif"
+            self.frank,
+            synapse.types.create_requester(self.frank),
+            "http://my.server/pic.gif",
         )
 
         self.assertEquals(
             (yield self.store.get_profile_avatar_url(self.frank.localpart)),
-            "http://my.server/pic.gif"
+            "http://my.server/pic.gif",
         )
diff --git a/tests/handlers/test_register.py b/tests/handlers/test_register.py
index 4ea59a58de..7b4ade3dfb 100644
--- a/tests/handlers/test_register.py
+++ b/tests/handlers/test_register.py
@@ -17,7 +17,7 @@ from mock import Mock
 
 from twisted.internet import defer
 
-from synapse.api.errors import RegistrationError
+from synapse.api.errors import ResourceLimitError
 from synapse.handlers.register import RegistrationHandler
 from synapse.types import UserID, create_requester
 
@@ -40,13 +40,15 @@ class RegistrationTestCase(unittest.TestCase):
         self.mock_distributor.declare("registered_user")
         self.mock_captcha_client = Mock()
         self.hs = yield setup_test_homeserver(
+            self.addCleanup,
             handlers=None,
             http_client=None,
             expire_access_token=True,
             profile_handler=Mock(),
         )
         self.macaroon_generator = Mock(
-            generate_access_token=Mock(return_value='secret'))
+            generate_access_token=Mock(return_value='secret')
+        )
         self.hs.get_macaroon_generator = Mock(return_value=self.macaroon_generator)
         self.hs.handlers = RegistrationHandlers(self.hs)
         self.handler = self.hs.get_handlers().registration_handler
@@ -62,7 +64,8 @@ class RegistrationTestCase(unittest.TestCase):
         user_id = "@someone:test"
         requester = create_requester("@as:test")
         result_user_id, result_token = yield self.handler.get_or_create_user(
-            requester, local_part, display_name)
+            requester, local_part, display_name
+        )
         self.assertEquals(result_user_id, user_id)
         self.assertEquals(result_token, 'secret')
 
@@ -73,13 +76,15 @@ class RegistrationTestCase(unittest.TestCase):
         yield store.register(
             user_id=frank.to_string(),
             token="jkv;g498752-43gj['eamb!-5",
-            password_hash=None)
+            password_hash=None,
+        )
         local_part = "frank"
         display_name = "Frank"
         user_id = "@frank:test"
         requester = create_requester("@as:test")
         result_user_id, result_token = yield self.handler.get_or_create_user(
-            requester, local_part, display_name)
+            requester, local_part, display_name
+        )
         self.assertEquals(result_user_id, user_id)
         self.assertEquals(result_token, 'secret')
 
@@ -93,7 +98,7 @@ class RegistrationTestCase(unittest.TestCase):
     def test_get_or_create_user_mau_not_blocked(self):
         self.hs.config.limit_usage_by_mau = True
         self.store.count_monthly_users = Mock(
-            return_value=defer.succeed(self.small_number_of_users)
+            return_value=defer.succeed(self.hs.config.max_mau_value - 1)
         )
         # Ensure does not throw exception
         yield self.handler.get_or_create_user("@user:server", 'c', "User")
@@ -104,7 +109,13 @@ class RegistrationTestCase(unittest.TestCase):
         self.store.get_monthly_active_count = Mock(
             return_value=defer.succeed(self.lots_of_users)
         )
-        with self.assertRaises(RegistrationError):
+        with self.assertRaises(ResourceLimitError):
+            yield self.handler.get_or_create_user("requester", 'b', "display_name")
+
+        self.store.get_monthly_active_count = Mock(
+            return_value=defer.succeed(self.hs.config.max_mau_value)
+        )
+        with self.assertRaises(ResourceLimitError):
             yield self.handler.get_or_create_user("requester", 'b', "display_name")
 
     @defer.inlineCallbacks
@@ -113,7 +124,13 @@ class RegistrationTestCase(unittest.TestCase):
         self.store.get_monthly_active_count = Mock(
             return_value=defer.succeed(self.lots_of_users)
         )
-        with self.assertRaises(RegistrationError):
+        with self.assertRaises(ResourceLimitError):
+            yield self.handler.register(localpart="local_part")
+
+        self.store.get_monthly_active_count = Mock(
+            return_value=defer.succeed(self.hs.config.max_mau_value)
+        )
+        with self.assertRaises(ResourceLimitError):
             yield self.handler.register(localpart="local_part")
 
     @defer.inlineCallbacks
@@ -122,5 +139,11 @@ class RegistrationTestCase(unittest.TestCase):
         self.store.get_monthly_active_count = Mock(
             return_value=defer.succeed(self.lots_of_users)
         )
-        with self.assertRaises(RegistrationError):
+        with self.assertRaises(ResourceLimitError):
+            yield self.handler.register_saml2(localpart="local_part")
+
+        self.store.get_monthly_active_count = Mock(
+            return_value=defer.succeed(self.hs.config.max_mau_value)
+        )
+        with self.assertRaises(ResourceLimitError):
             yield self.handler.register_saml2(localpart="local_part")
diff --git a/tests/handlers/test_sync.py b/tests/handlers/test_sync.py
new file mode 100644
index 0000000000..a01ab471f5
--- /dev/null
+++ b/tests/handlers/test_sync.py
@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 New Vector 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 synapse.api.errors import Codes, ResourceLimitError
+from synapse.api.filtering import DEFAULT_FILTER_COLLECTION
+from synapse.handlers.sync import SyncConfig, SyncHandler
+from synapse.types import UserID
+
+import tests.unittest
+import tests.utils
+from tests.utils import setup_test_homeserver
+
+
+class SyncTestCase(tests.unittest.TestCase):
+    """ Tests Sync Handler. """
+
+    @defer.inlineCallbacks
+    def setUp(self):
+        self.hs = yield setup_test_homeserver(self.addCleanup)
+        self.sync_handler = SyncHandler(self.hs)
+        self.store = self.hs.get_datastore()
+
+    @defer.inlineCallbacks
+    def test_wait_for_sync_for_user_auth_blocking(self):
+
+        user_id1 = "@user1:server"
+        user_id2 = "@user2:server"
+        sync_config = self._generate_sync_config(user_id1)
+
+        self.hs.config.limit_usage_by_mau = True
+        self.hs.config.max_mau_value = 1
+
+        # Check that the happy case does not throw errors
+        yield self.store.upsert_monthly_active_user(user_id1)
+        yield self.sync_handler.wait_for_sync_for_user(sync_config)
+
+        # Test that global lock works
+        self.hs.config.hs_disabled = True
+        with self.assertRaises(ResourceLimitError) as e:
+            yield self.sync_handler.wait_for_sync_for_user(sync_config)
+        self.assertEquals(e.exception.errcode, Codes.RESOURCE_LIMIT_EXCEED)
+
+        self.hs.config.hs_disabled = False
+
+        sync_config = self._generate_sync_config(user_id2)
+
+        with self.assertRaises(ResourceLimitError) as e:
+            yield self.sync_handler.wait_for_sync_for_user(sync_config)
+        self.assertEquals(e.exception.errcode, Codes.RESOURCE_LIMIT_EXCEED)
+
+    def _generate_sync_config(self, user_id):
+        return SyncConfig(
+            user=UserID(user_id.split(":")[0][1:], user_id.split(":")[1]),
+            filter_collection=DEFAULT_FILTER_COLLECTION,
+            is_guest=False,
+            request_key="request_key",
+            device_id="device_id",
+        )
diff --git a/tests/handlers/test_typing.py b/tests/handlers/test_typing.py
index f422cf3c5a..ad58073a14 100644
--- a/tests/handlers/test_typing.py
+++ b/tests/handlers/test_typing.py
@@ -38,23 +38,19 @@ def _expect_edu(destination, edu_type, content, origin="test"):
         "origin": origin,
         "origin_server_ts": 1000000,
         "pdus": [],
-        "edus": [
-            {
-                "edu_type": edu_type,
-                "content": content,
-            }
-        ],
+        "edus": [{"edu_type": edu_type, "content": content}],
     }
 
 
 def _make_edu_json(origin, edu_type, content):
-    return json.dumps(
-        _expect_edu("test", edu_type, content, origin=origin)
-    ).encode('utf8')
+    return json.dumps(_expect_edu("test", edu_type, content, origin=origin)).encode(
+        'utf8'
+    )
 
 
 class TypingNotificationsTestCase(unittest.TestCase):
     """Tests typing notifications to rooms."""
+
     @defer.inlineCallbacks
     def setUp(self):
         self.clock = MockClock()
@@ -71,21 +67,24 @@ class TypingNotificationsTestCase(unittest.TestCase):
         self.state_handler = Mock()
 
         hs = yield setup_test_homeserver(
+            self.addCleanup,
             "test",
             auth=self.auth,
             clock=self.clock,
-            datastore=Mock(spec=[
-                # Bits that Federation needs
-                "prep_send_transaction",
-                "delivered_txn",
-                "get_received_txn_response",
-                "set_received_txn_response",
-                "get_destination_retry_timings",
-                "get_devices_by_remote",
-                # Bits that user_directory needs
-                "get_user_directory_stream_pos",
-                "get_current_state_deltas",
-            ]),
+            datastore=Mock(
+                spec=[
+                    # Bits that Federation needs
+                    "prep_send_transaction",
+                    "delivered_txn",
+                    "get_received_txn_response",
+                    "set_received_txn_response",
+                    "get_destination_retry_timings",
+                    "get_devices_by_remote",
+                    # Bits that user_directory needs
+                    "get_user_directory_stream_pos",
+                    "get_current_state_deltas",
+                ]
+            ),
             state_handler=self.state_handler,
             handlers=Mock(),
             notifier=mock_notifier,
@@ -100,19 +99,16 @@ class TypingNotificationsTestCase(unittest.TestCase):
         self.event_source = hs.get_event_sources().sources["typing"]
 
         self.datastore = hs.get_datastore()
-        retry_timings_res = {
-            "destination": "",
-            "retry_last_ts": 0,
-            "retry_interval": 0,
-        }
-        self.datastore.get_destination_retry_timings.return_value = (
-            defer.succeed(retry_timings_res)
+        retry_timings_res = {"destination": "", "retry_last_ts": 0, "retry_interval": 0}
+        self.datastore.get_destination_retry_timings.return_value = defer.succeed(
+            retry_timings_res
         )
 
         self.datastore.get_devices_by_remote.return_value = (0, [])
 
         def get_received_txn_response(*args):
             return defer.succeed(None)
+
         self.datastore.get_received_txn_response = get_received_txn_response
 
         self.room_id = "a-room"
@@ -125,10 +121,12 @@ class TypingNotificationsTestCase(unittest.TestCase):
 
         def get_joined_hosts_for_room(room_id):
             return set(member.domain for member in self.room_members)
+
         self.datastore.get_joined_hosts_for_room = get_joined_hosts_for_room
 
         def get_current_user_in_room(room_id):
             return set(str(u) for u in self.room_members)
+
         self.state_handler.get_current_user_in_room = get_current_user_in_room
 
         self.datastore.get_user_directory_stream_pos.return_value = (
@@ -136,19 +134,13 @@ class TypingNotificationsTestCase(unittest.TestCase):
             defer.succeed(1)
         )
 
-        self.datastore.get_current_state_deltas.return_value = (
-            None
-        )
+        self.datastore.get_current_state_deltas.return_value = None
 
         self.auth.check_joined_room = check_joined_room
 
         self.datastore.get_to_device_stream_token = lambda: 0
-        self.datastore.get_new_device_msgs_for_remote = (
-            lambda *args, **kargs: ([], 0)
-        )
-        self.datastore.delete_device_msgs_for_remote = (
-            lambda *args, **kargs: None
-        )
+        self.datastore.get_new_device_msgs_for_remote = lambda *args, **kargs: ([], 0)
+        self.datastore.delete_device_msgs_for_remote = lambda *args, **kargs: None
 
         # Some local users to test with
         self.u_apple = UserID.from_string("@apple:test")
@@ -170,24 +162,23 @@ class TypingNotificationsTestCase(unittest.TestCase):
             timeout=20000,
         )
 
-        self.on_new_event.assert_has_calls([
-            call('typing_key', 1, rooms=[self.room_id]),
-        ])
+        self.on_new_event.assert_has_calls(
+            [call('typing_key', 1, rooms=[self.room_id])]
+        )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
         events = yield self.event_source.get_new_events(
-            room_ids=[self.room_id],
-            from_key=0,
+            room_ids=[self.room_id], from_key=0
         )
         self.assertEquals(
             events[0],
             [
-                {"type": "m.typing",
-                 "room_id": self.room_id,
-                 "content": {
-                     "user_ids": [self.u_apple.to_string()],
-                 }},
-            ]
+                {
+                    "type": "m.typing",
+                    "room_id": self.room_id,
+                    "content": {"user_ids": [self.u_apple.to_string()]},
+                }
+            ],
         )
 
     @defer.inlineCallbacks
@@ -206,13 +197,13 @@ class TypingNotificationsTestCase(unittest.TestCase):
                         "room_id": self.room_id,
                         "user_id": self.u_apple.to_string(),
                         "typing": True,
-                    }
+                    },
                 ),
                 json_data_callback=ANY,
                 long_retries=True,
                 backoff_on_404=True,
             ),
-            defer.succeed((200, "OK"))
+            defer.succeed((200, "OK")),
         )
 
         yield self.handler.started_typing(
@@ -240,27 +231,29 @@ class TypingNotificationsTestCase(unittest.TestCase):
                     "room_id": self.room_id,
                     "user_id": self.u_onion.to_string(),
                     "typing": True,
-                }
+                },
             ),
             federation_auth=True,
         )
 
-        self.on_new_event.assert_has_calls([
-            call('typing_key', 1, rooms=[self.room_id]),
-        ])
+        self.on_new_event.assert_has_calls(
+            [call('typing_key', 1, rooms=[self.room_id])]
+        )
 
         self.assertEquals(self.event_source.get_current_key(), 1)
         events = yield self.event_source.get_new_events(
-            room_ids=[self.room_id],
-            from_key=0
+            room_ids=[self.room_id], from_key=0
+        )
+        self.assertEquals(
+            events[0],
+            [
+                {
+                    "type": "m.typing",
+                    "room_id": self.room_id,
+                    "content": {"user_ids": [self.u_onion.to_string()]},
+                }
+            ],
         )
-        self.assertEquals(events[0], [{
-            "type": "m.typing",
-            "room_id": self.room_id,
-            "content": {
-                "user_ids": [self.u_onion.to_string()],
-            },
-        }])
 
     @defer.inlineCallbacks
     def test_stopped_typing(self):
@@ -278,17 +271,18 @@ class TypingNotificationsTestCase(unittest.TestCase):
                         "room_id": self.room_id,
                         "user_id": self.u_apple.to_string(),
                         "typing": False,
-                    }
+                    },
                 ),
                 json_data_callback=ANY,
                 long_retries=True,
                 backoff_on_404=True,
             ),
-            defer.succeed((200, "OK"))
+            defer.succeed((200, "OK")),
         )
 
         # Gut-wrenching
         from synapse.handlers.typing import RoomMember
+
         member = RoomMember(self.room_id, self.u_apple.to_string())
         self.handler._member_typing_until[member] = 1002000
         self.handler._room_typing[self.room_id] = set([self.u_apple.to_string()])
@@ -296,29 +290,29 @@ class TypingNotificationsTestCase(unittest.TestCase):
         self.assertEquals(self.event_source.get_current_key(), 0)
 
         yield self.handler.stopped_typing(
-            target_user=self.u_apple,
-            auth_user=self.u_apple,
-            room_id=self.room_id,
+            target_user=self.u_apple, auth_user=self.u_apple, room_id=self.room_id
         )
 
-        self.on_new_event.assert_has_calls([
-            call('typing_key', 1, rooms=[self.room_id]),
-        ])
+        self.on_new_event.assert_has_calls(
+            [call('typing_key', 1, rooms=[self.room_id])]
+        )
 
         yield put_json.await_calls()
 
         self.assertEquals(self.event_source.get_current_key(), 1)
         events = yield self.event_source.get_new_events(
-            room_ids=[self.room_id],
-            from_key=0,
+            room_ids=[self.room_id], from_key=0
+        )
+        self.assertEquals(
+            events[0],
+            [
+                {
+                    "type": "m.typing",
+                    "room_id": self.room_id,
+                    "content": {"user_ids": []},
+                }
+            ],
         )
-        self.assertEquals(events[0], [{
-            "type": "m.typing",
-            "room_id": self.room_id,
-            "content": {
-                "user_ids": [],
-            },
-        }])
 
     @defer.inlineCallbacks
     def test_typing_timeout(self):
@@ -333,42 +327,46 @@ class TypingNotificationsTestCase(unittest.TestCase):
             timeout=10000,
         )
 
-        self.on_new_event.assert_has_calls([
-            call('typing_key', 1, rooms=[self.room_id]),
-        ])
+        self.on_new_event.assert_has_calls(
+            [call('typing_key', 1, rooms=[self.room_id])]
+        )
         self.on_new_event.reset_mock()
 
         self.assertEquals(self.event_source.get_current_key(), 1)
         events = yield self.event_source.get_new_events(
-            room_ids=[self.room_id],
-            from_key=0,
+            room_ids=[self.room_id], from_key=0
+        )
+        self.assertEquals(
+            events[0],
+            [
+                {
+                    "type": "m.typing",
+                    "room_id": self.room_id,
+                    "content": {"user_ids": [self.u_apple.to_string()]},
+                }
+            ],
         )
-        self.assertEquals(events[0], [{
-            "type": "m.typing",
-            "room_id": self.room_id,
-            "content": {
-                "user_ids": [self.u_apple.to_string()],
-            },
-        }])
 
         self.clock.advance_time(16)
 
-        self.on_new_event.assert_has_calls([
-            call('typing_key', 2, rooms=[self.room_id]),
-        ])
+        self.on_new_event.assert_has_calls(
+            [call('typing_key', 2, rooms=[self.room_id])]
+        )
 
         self.assertEquals(self.event_source.get_current_key(), 2)
         events = yield self.event_source.get_new_events(
-            room_ids=[self.room_id],
-            from_key=1,
+            room_ids=[self.room_id], from_key=1
+        )
+        self.assertEquals(
+            events[0],
+            [
+                {
+                    "type": "m.typing",
+                    "room_id": self.room_id,
+                    "content": {"user_ids": []},
+                }
+            ],
         )
-        self.assertEquals(events[0], [{
-            "type": "m.typing",
-            "room_id": self.room_id,
-            "content": {
-                "user_ids": [],
-            },
-        }])
 
         # SYN-230 - see if we can still set after timeout
 
@@ -379,20 +377,22 @@ class TypingNotificationsTestCase(unittest.TestCase):
             timeout=10000,
         )
 
-        self.on_new_event.assert_has_calls([
-            call('typing_key', 3, rooms=[self.room_id]),
-        ])
+        self.on_new_event.assert_has_calls(
+            [call('typing_key', 3, rooms=[self.room_id])]
+        )
         self.on_new_event.reset_mock()
 
         self.assertEquals(self.event_source.get_current_key(), 3)
         events = yield self.event_source.get_new_events(
-            room_ids=[self.room_id],
-            from_key=0,
+            room_ids=[self.room_id], from_key=0
+        )
+        self.assertEquals(
+            events[0],
+            [
+                {
+                    "type": "m.typing",
+                    "room_id": self.room_id,
+                    "content": {"user_ids": [self.u_apple.to_string()]},
+                }
+            ],
         )
-        self.assertEquals(events[0], [{
-            "type": "m.typing",
-            "room_id": self.room_id,
-            "content": {
-                "user_ids": [self.u_apple.to_string()],
-            },
-        }])