Merge remote-tracking branch 'upstream/develop' into send_sni_for_federation_requests

# Conflicts:
#	synapse/crypto/context_factory.py

76 files changed, 279 insertions, 218 deletions

diff --git a/tests/__init__.py b/tests/__init__.py
index aab20e8e02..24006c949e 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -14,4 +14,5 @@
 # limitations under the License.
 
 from twisted.trial import util
+
 util.DEFAULT_TIMEOUT_DURATION = 10
diff --git a/tests/api/test_auth.py b/tests/api/test_auth.py
index aec3b62897..5f158ec4b9 100644
--- a/tests/api/test_auth.py
+++ b/tests/api/test_auth.py
@@ -13,16 +13,19 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import pymacaroons
 from mock import Mock
+
+import pymacaroons
+
 from twisted.internet import defer
 
 import synapse.handlers.auth
 from synapse.api.auth import Auth
 from synapse.api.errors import AuthError
 from synapse.types import UserID
+
 from tests import unittest
-from tests.utils import setup_test_homeserver, mock_getRawHeaders
+from tests.utils import mock_getRawHeaders, setup_test_homeserver
 
 
 class TestHandlers(object):
diff --git a/tests/api/test_filtering.py b/tests/api/test_filtering.py
index dcceca7f3e..836a23fb54 100644
--- a/tests/api/test_filtering.py
+++ b/tests/api/test_filtering.py
@@ -13,19 +13,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from tests import unittest
-from twisted.internet import defer
-
 from mock import Mock
-from tests.utils import (
-    MockHttpResource, DeferredMockCallable, setup_test_homeserver
-)
 
+import jsonschema
+
+from twisted.internet import defer
+
+from synapse.api.errors import SynapseError
 from synapse.api.filtering import Filter
 from synapse.events import FrozenEvent
-from synapse.api.errors import SynapseError
 
-import jsonschema
+from tests import unittest
+from tests.utils import DeferredMockCallable, MockHttpResource, setup_test_homeserver
 
 user_localpart = "test_user"
 
diff --git a/tests/appservice/test_appservice.py b/tests/appservice/test_appservice.py
index 5b2b95860a..891e0cc973 100644
--- a/tests/appservice/test_appservice.py
+++ b/tests/appservice/test_appservice.py
@@ -12,14 +12,15 @@
 # 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 synapse.appservice import ApplicationService
+import re
+
+from mock import Mock
 
 from twisted.internet import defer
 
-from mock import Mock
-from tests import unittest
+from synapse.appservice import ApplicationService
 
-import re
+from tests import unittest
 
 
 def _regex(regex, exclusive=True):
diff --git a/tests/appservice/test_scheduler.py b/tests/appservice/test_scheduler.py
index 9181692771..b9f4863e9a 100644
--- a/tests/appservice/test_scheduler.py
+++ b/tests/appservice/test_scheduler.py
@@ -12,17 +12,22 @@
 # 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 mock import Mock
+
+from twisted.internet import defer
+
 from synapse.appservice import ApplicationServiceState
 from synapse.appservice.scheduler import (
-    _ServiceQueuer, _TransactionController, _Recoverer
+    _Recoverer,
+    _ServiceQueuer,
+    _TransactionController,
 )
-from twisted.internet import defer
-
 from synapse.util.logcontext import make_deferred_yieldable
-from ..utils import MockClock
-from mock import Mock
+
 from tests import unittest
 
+from ..utils import MockClock
+
 
 class ApplicationServiceSchedulerTransactionCtrlTestCase(unittest.TestCase):
 
diff --git a/tests/config/test_generate.py b/tests/config/test_generate.py
index 879159ccea..eb7f0ab12a 100644
--- a/tests/config/test_generate.py
+++ b/tests/config/test_generate.py
@@ -19,6 +19,7 @@ import shutil
 import tempfile
 
 from synapse.config.homeserver import HomeServerConfig
+
 from tests import unittest
 
 
diff --git a/tests/config/test_load.py b/tests/config/test_load.py
index 772afd2cf9..5c422eff38 100644
--- a/tests/config/test_load.py
+++ b/tests/config/test_load.py
@@ -15,8 +15,11 @@
 import os.path
 import shutil
 import tempfile
+
 import yaml
+
 from synapse.config.homeserver import HomeServerConfig
+
 from tests import unittest
 
 
diff --git a/tests/crypto/test_event_signing.py b/tests/crypto/test_event_signing.py
index 47cb328a01..cd11871b80 100644
--- a/tests/crypto/test_event_signing.py
+++ b/tests/crypto/test_event_signing.py
@@ -14,15 +14,13 @@
 # limitations under the License.
 
 
-from tests import unittest
-
-from synapse.events.builder import EventBuilder
-from synapse.crypto.event_signing import add_hashes_and_signatures
-
+import nacl.signing
 from unpaddedbase64 import decode_base64
 
-import nacl.signing
+from synapse.crypto.event_signing import add_hashes_and_signatures
+from synapse.events.builder import EventBuilder
 
+from tests import unittest
 
 # Perform these tests using given secret key so we get entirely deterministic
 # signatures output that we can test against.
diff --git a/tests/crypto/test_keyring.py b/tests/crypto/test_keyring.py
index cc1c862ba4..a9d37fe084 100644
--- a/tests/crypto/test_keyring.py
+++ b/tests/crypto/test_keyring.py
@@ -14,15 +14,19 @@
 # limitations under the License.
 import time
 
+from mock import Mock
+
 import signedjson.key
 import signedjson.sign
-from mock import Mock
+
+from twisted.internet import defer, reactor
+
 from synapse.api.errors import SynapseError
 from synapse.crypto import keyring
-from synapse.util import logcontext, Clock
+from synapse.util import Clock, logcontext
 from synapse.util.logcontext import LoggingContext
+
 from tests import unittest, utils
-from twisted.internet import defer, reactor
 
 
 class MockPerspectiveServer(object):
diff --git a/tests/events/test_utils.py b/tests/events/test_utils.py
index dfc870066e..f51d99419e 100644
--- a/tests/events/test_utils.py
+++ b/tests/events/test_utils.py
@@ -14,11 +14,11 @@
 # limitations under the License.
 
 
-from .. import unittest
-
 from synapse.events import FrozenEvent
 from synapse.events.utils import prune_event, serialize_event
 
+from .. import unittest
+
 
 def MockEvent(**kwargs):
     if "event_id" not in kwargs:
diff --git a/tests/federation/test_federation_server.py b/tests/federation/test_federation_server.py
index 4e8dc8fea0..c91e25f54f 100644
--- a/tests/federation/test_federation_server.py
+++ b/tests/federation/test_federation_server.py
@@ -16,6 +16,7 @@ import logging
 
 from synapse.events import FrozenEvent
 from synapse.federation.federation_server import server_matches_acl_event
+
 from tests import unittest
 
 
diff --git a/tests/handlers/test_appservice.py b/tests/handlers/test_appservice.py
index b753455943..57c0771cf3 100644
--- a/tests/handlers/test_appservice.py
+++ b/tests/handlers/test_appservice.py
@@ -13,13 +13,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from mock import Mock
+
 from twisted.internet import defer
-from .. import unittest
-from tests.utils import MockClock
 
 from synapse.handlers.appservice import ApplicationServicesHandler
 
-from mock import Mock
+from tests.utils import MockClock
+
+from .. import unittest
 
 
 class AppServiceHandlerTestCase(unittest.TestCase):
diff --git a/tests/handlers/test_auth.py b/tests/handlers/test_auth.py
index 1822dcf1e0..2e5e8e4dec 100644
--- a/tests/handlers/test_auth.py
+++ b/tests/handlers/test_auth.py
@@ -14,11 +14,13 @@
 # limitations under the License.
 
 import pymacaroons
+
 from twisted.internet import defer
 
 import synapse
 import synapse.api.errors
 from synapse.handlers.auth import AuthHandler
+
 from tests import unittest
 from tests.utils import setup_test_homeserver
 
diff --git a/tests/handlers/test_device.py b/tests/handlers/test_device.py
index 778ff2f6e9..633a0b7f36 100644
--- a/tests/handlers/test_device.py
+++ b/tests/handlers/test_device.py
@@ -17,8 +17,8 @@ from twisted.internet import defer
 
 import synapse.api.errors
 import synapse.handlers.device
-
 import synapse.storage
+
 from tests import unittest, utils
 
 user1 = "@boris:aaa"
diff --git a/tests/handlers/test_directory.py b/tests/handlers/test_directory.py
index 7e5332e272..a353070316 100644
--- a/tests/handlers/test_directory.py
+++ b/tests/handlers/test_directory.py
@@ -14,14 +14,14 @@
 # limitations under the License.
 
 
-from tests import unittest
-from twisted.internet import defer
-
 from mock import Mock
 
+from twisted.internet import defer
+
 from synapse.handlers.directory import DirectoryHandler
 from synapse.types import RoomAlias
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
 
diff --git a/tests/handlers/test_e2e_keys.py b/tests/handlers/test_e2e_keys.py
index d1bd87b898..ca1542236d 100644
--- a/tests/handlers/test_e2e_keys.py
+++ b/tests/handlers/test_e2e_keys.py
@@ -14,13 +14,14 @@
 # limitations under the License.
 
 import mock
-from synapse.api import errors
+
 from twisted.internet import defer
 
 import synapse.api.errors
 import synapse.handlers.e2e_keys
-
 import synapse.storage
+from synapse.api import errors
+
 from tests import unittest, utils
 
 
diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py
index de06a6ad30..121ce78634 100644
--- a/tests/handlers/test_presence.py
+++ b/tests/handlers/test_presence.py
@@ -14,18 +14,22 @@
 # limitations under the License.
 
 
-from tests import unittest
-
 from mock import Mock, call
 
 from synapse.api.constants import PresenceState
 from synapse.handlers.presence import (
-    handle_update, handle_timeout,
-    IDLE_TIMER, SYNC_ONLINE_TIMEOUT, LAST_ACTIVE_GRANULARITY, FEDERATION_TIMEOUT,
     FEDERATION_PING_INTERVAL,
+    FEDERATION_TIMEOUT,
+    IDLE_TIMER,
+    LAST_ACTIVE_GRANULARITY,
+    SYNC_ONLINE_TIMEOUT,
+    handle_timeout,
+    handle_update,
 )
 from synapse.storage.presence import UserPresenceState
 
+from tests import unittest
+
 
 class PresenceUpdateTestCase(unittest.TestCase):
     def test_offline_to_online(self):
diff --git a/tests/handlers/test_profile.py b/tests/handlers/test_profile.py
index 458296ee4c..dc17918a3d 100644
--- a/tests/handlers/test_profile.py
+++ b/tests/handlers/test_profile.py
@@ -14,16 +14,16 @@
 # limitations under the License.
 
 
-from tests import unittest
-from twisted.internet import defer
-
 from mock import Mock, NonCallableMock
 
+from twisted.internet import defer
+
 import synapse.types
 from synapse.api.errors import AuthError
 from synapse.handlers.profile import ProfileHandler
 from synapse.types import UserID
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
 
diff --git a/tests/handlers/test_register.py b/tests/handlers/test_register.py
index e990e45220..025fa1be81 100644
--- a/tests/handlers/test_register.py
+++ b/tests/handlers/test_register.py
@@ -13,15 +13,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from mock import Mock
+
 from twisted.internet import defer
-from .. import unittest
 
 from synapse.handlers.register import RegistrationHandler
 from synapse.types import UserID, create_requester
 
 from tests.utils import setup_test_homeserver
 
-from mock import Mock
+from .. import unittest
 
 
 class RegistrationHandlers(object):
diff --git a/tests/handlers/test_typing.py b/tests/handlers/test_typing.py
index a433bbfa8a..b08856f763 100644
--- a/tests/handlers/test_typing.py
+++ b/tests/handlers/test_typing.py
@@ -14,19 +14,24 @@
 # limitations under the License.
 
 
-from tests import unittest
-from twisted.internet import defer
-
-from mock import Mock, call, ANY
 import json
 
-from ..utils import (
-    MockHttpResource, MockClock, DeferredMockCallable, setup_test_homeserver
-)
+from mock import ANY, Mock, call
+
+from twisted.internet import defer
 
 from synapse.api.errors import AuthError
 from synapse.types import UserID
 
+from tests import unittest
+
+from ..utils import (
+    DeferredMockCallable,
+    MockClock,
+    MockHttpResource,
+    setup_test_homeserver,
+)
+
 
 def _expect_edu(destination, edu_type, content, origin="test"):
     return {
diff --git a/tests/http/test_endpoint.py b/tests/http/test_endpoint.py
index b8a48d20a4..60e6a75953 100644
--- a/tests/http/test_endpoint.py
+++ b/tests/http/test_endpoint.py
@@ -12,10 +12,8 @@
 # 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 synapse.http.endpoint import (
-    parse_server_name,
-    parse_and_validate_server_name,
-)
+from synapse.http.endpoint import parse_and_validate_server_name, parse_server_name
+
 from tests import unittest
 
 
diff --git a/tests/replication/slave/storage/_base.py b/tests/replication/slave/storage/_base.py
index 64e07a8c93..8708c8a196 100644
--- a/tests/replication/slave/storage/_base.py
+++ b/tests/replication/slave/storage/_base.py
@@ -12,17 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from twisted.internet import defer, reactor
-from tests import unittest
-
 import tempfile
 
 from mock import Mock, NonCallableMock
-from tests.utils import setup_test_homeserver
-from synapse.replication.tcp.resource import ReplicationStreamProtocolFactory
+
+from twisted.internet import defer, reactor
+
 from synapse.replication.tcp.client import (
-    ReplicationClientHandler, ReplicationClientFactory,
+    ReplicationClientFactory,
+    ReplicationClientHandler,
 )
+from synapse.replication.tcp.resource import ReplicationStreamProtocolFactory
+
+from tests import unittest
+from tests.utils import setup_test_homeserver
 
 
 class BaseSlavedStoreTestCase(unittest.TestCase):
diff --git a/tests/replication/slave/storage/test_account_data.py b/tests/replication/slave/storage/test_account_data.py
index f47a42e45d..adf226404e 100644
--- a/tests/replication/slave/storage/test_account_data.py
+++ b/tests/replication/slave/storage/test_account_data.py
@@ -13,11 +13,11 @@
 # limitations under the License.
 
 
-from ._base import BaseSlavedStoreTestCase
+from twisted.internet import defer
 
 from synapse.replication.slave.storage.account_data import SlavedAccountDataStore
 
-from twisted.internet import defer
+from ._base import BaseSlavedStoreTestCase
 
 USER_ID = "@feeling:blue"
 TYPE = "my.type"
diff --git a/tests/replication/slave/storage/test_events.py b/tests/replication/slave/storage/test_events.py
index cb058d3142..cea01d93eb 100644
--- a/tests/replication/slave/storage/test_events.py
+++ b/tests/replication/slave/storage/test_events.py
@@ -12,15 +12,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ._base import BaseSlavedStoreTestCase
+from twisted.internet import defer
 
 from synapse.events import FrozenEvent, _EventInternalMetadata
 from synapse.events.snapshot import EventContext
 from synapse.replication.slave.storage.events import SlavedEventStore
 from synapse.storage.roommember import RoomsForUser
 
-from twisted.internet import defer
-
+from ._base import BaseSlavedStoreTestCase
 
 USER_ID = "@feeling:blue"
 USER_ID_2 = "@bright:blue"
diff --git a/tests/replication/slave/storage/test_receipts.py b/tests/replication/slave/storage/test_receipts.py
index 6624fe4eea..e6d670cc1f 100644
--- a/tests/replication/slave/storage/test_receipts.py
+++ b/tests/replication/slave/storage/test_receipts.py
@@ -12,11 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ._base import BaseSlavedStoreTestCase
+from twisted.internet import defer
 
 from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
 
-from twisted.internet import defer
+from ._base import BaseSlavedStoreTestCase
 
 USER_ID = "@feeling:blue"
 ROOM_ID = "!room:blue"
diff --git a/tests/rest/client/test_transactions.py b/tests/rest/client/test_transactions.py
index 6a757289db..34e68ae82f 100644
--- a/tests/rest/client/test_transactions.py
+++ b/tests/rest/client/test_transactions.py
@@ -1,10 +1,11 @@
-from synapse.rest.client.transactions import HttpTransactionCache
-from synapse.rest.client.transactions import CLEANUP_PERIOD_MS
-from twisted.internet import defer, reactor
 from mock import Mock, call
 
+from twisted.internet import defer, reactor
+
+from synapse.rest.client.transactions import CLEANUP_PERIOD_MS, HttpTransactionCache
 from synapse.util import Clock
 from synapse.util.logcontext import LoggingContext
+
 from tests import unittest
 from tests.utils import MockClock
 
@@ -13,7 +14,10 @@ class HttpTransactionCacheTestCase(unittest.TestCase):
 
     def setUp(self):
         self.clock = MockClock()
-        self.cache = HttpTransactionCache(self.clock)
+        self.hs = Mock()
+        self.hs.get_clock = Mock(return_value=self.clock)
+        self.hs.get_auth = Mock()
+        self.cache = HttpTransactionCache(self.hs)
 
         self.mock_http_response = (200, "GOOD JOB!")
         self.mock_key = "foo"
diff --git a/tests/rest/client/v1/test_events.py b/tests/rest/client/v1/test_events.py
index f5a7258e68..a5af36a99c 100644
--- a/tests/rest/client/v1/test_events.py
+++ b/tests/rest/client/v1/test_events.py
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 """ Tests REST events for /events paths."""
-from tests import unittest
+from mock import Mock, NonCallableMock
 
 # twisted imports
 from twisted.internet import defer
@@ -23,13 +23,11 @@ import synapse.rest.client.v1.events
 import synapse.rest.client.v1.register
 import synapse.rest.client.v1.room
 
+from tests import unittest
 
 from ....utils import MockHttpResource, setup_test_homeserver
 from .utils import RestTestCase
 
-from mock import Mock, NonCallableMock
-
-
 PATH_PREFIX = "/_matrix/client/api/v1"
 
 
diff --git a/tests/rest/client/v1/test_profile.py b/tests/rest/client/v1/test_profile.py
index dc94b8bd19..d71cc8e0db 100644
--- a/tests/rest/client/v1/test_profile.py
+++ b/tests/rest/client/v1/test_profile.py
@@ -15,12 +15,15 @@
 
 """Tests REST events for /profile paths."""
 from mock import Mock
+
 from twisted.internet import defer
 
 import synapse.types
-from synapse.api.errors import SynapseError, AuthError
+from synapse.api.errors import AuthError, SynapseError
 from synapse.rest.client.v1 import profile
+
 from tests import unittest
+
 from ....utils import MockHttpResource, setup_test_homeserver
 
 myid = "@1234ABCD:test"
diff --git a/tests/rest/client/v1/test_register.py b/tests/rest/client/v1/test_register.py
index a6a4e2ffe0..f596acb85f 100644
--- a/tests/rest/client/v1/test_register.py
+++ b/tests/rest/client/v1/test_register.py
@@ -13,12 +13,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from synapse.rest.client.v1.register import CreateUserRestServlet
-from twisted.internet import defer
+import json
+
 from mock import Mock
+
+from twisted.internet import defer
+
+from synapse.rest.client.v1.register import CreateUserRestServlet
+
 from tests import unittest
 from tests.utils import mock_getRawHeaders
-import json
 
 
 class CreateUserServletTestCase(unittest.TestCase):
diff --git a/tests/rest/client/v1/test_rooms.py b/tests/rest/client/v1/test_rooms.py
index 61d737725b..895dffa095 100644
--- a/tests/rest/client/v1/test_rooms.py
+++ b/tests/rest/client/v1/test_rooms.py
@@ -15,22 +15,21 @@
 
 """Tests REST events for /rooms paths."""
 
+import json
+
+from mock import Mock, NonCallableMock
+from six.moves.urllib import parse as urlparse
+
 # twisted imports
 from twisted.internet import defer
 
 import synapse.rest.client.v1.room
 from synapse.api.constants import Membership
-
 from synapse.types import UserID
 
-import json
-from six.moves.urllib import parse as urlparse
-
 from ....utils import MockHttpResource, setup_test_homeserver
 from .utils import RestTestCase
 
-from mock import Mock, NonCallableMock
-
 PATH_PREFIX = "/_matrix/client/api/v1"
 
 
diff --git a/tests/rest/client/v1/test_typing.py b/tests/rest/client/v1/test_typing.py
index fe161ee5cb..bddb3302e4 100644
--- a/tests/rest/client/v1/test_typing.py
+++ b/tests/rest/client/v1/test_typing.py
@@ -15,18 +15,17 @@
 
 """Tests REST events for /rooms paths."""
 
+from mock import Mock, NonCallableMock
+
 # twisted imports
 from twisted.internet import defer
 
 import synapse.rest.client.v1.room
 from synapse.types import UserID
 
-from ....utils import MockHttpResource, MockClock, setup_test_homeserver
+from ....utils import MockClock, MockHttpResource, setup_test_homeserver
 from .utils import RestTestCase
 
-from mock import Mock, NonCallableMock
-
-
 PATH_PREFIX = "/_matrix/client/api/v1"
 
 
diff --git a/tests/rest/client/v1/utils.py b/tests/rest/client/v1/utils.py
index 3bb1dd003a..54d7ba380d 100644
--- a/tests/rest/client/v1/utils.py
+++ b/tests/rest/client/v1/utils.py
@@ -13,16 +13,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import json
+import time
+
 # twisted imports
 from twisted.internet import defer
 
-# trial imports
-from tests import unittest
-
 from synapse.api.constants import Membership
 
-import json
-import time
+# trial imports
+from tests import unittest
 
 
 class RestTestCase(unittest.TestCase):
diff --git a/tests/rest/client/v2_alpha/__init__.py b/tests/rest/client/v2_alpha/__init__.py
index 5170217d9e..f18a8a6027 100644
--- a/tests/rest/client/v2_alpha/__init__.py
+++ b/tests/rest/client/v2_alpha/__init__.py
@@ -13,16 +13,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from tests import unittest
-
 from mock import Mock
 
-from ....utils import MockHttpResource, setup_test_homeserver
+from twisted.internet import defer
 
 from synapse.types import UserID
 
-from twisted.internet import defer
+from tests import unittest
 
+from ....utils import MockHttpResource, setup_test_homeserver
 
 PATH_PREFIX = "/_matrix/client/v2_alpha"
 
diff --git a/tests/rest/client/v2_alpha/test_filter.py b/tests/rest/client/v2_alpha/test_filter.py
index 76b833e119..bb0b2f94ea 100644
--- a/tests/rest/client/v2_alpha/test_filter.py
+++ b/tests/rest/client/v2_alpha/test_filter.py
@@ -15,16 +15,13 @@
 
 from twisted.internet import defer
 
-from tests import unittest
-
-from synapse.rest.client.v2_alpha import filter
-
-from synapse.api.errors import Codes
-
 import synapse.types
-
+from synapse.api.errors import Codes
+from synapse.rest.client.v2_alpha import filter
 from synapse.types import UserID
 
+from tests import unittest
+
 from ....utils import MockHttpResource, setup_test_homeserver
 
 PATH_PREFIX = "/_matrix/client/v2_alpha"
diff --git a/tests/rest/client/v2_alpha/test_register.py b/tests/rest/client/v2_alpha/test_register.py
index 8aba456510..9b57a56070 100644
--- a/tests/rest/client/v2_alpha/test_register.py
+++ b/tests/rest/client/v2_alpha/test_register.py
@@ -1,12 +1,15 @@
+import json
+
+from mock import Mock
+
+from twisted.internet import defer
 from twisted.python import failure
 
+from synapse.api.errors import InteractiveAuthIncompleteError, SynapseError
 from synapse.rest.client.v2_alpha.register import RegisterRestServlet
-from synapse.api.errors import SynapseError, InteractiveAuthIncompleteError
-from twisted.internet import defer
-from mock import Mock
+
 from tests import unittest
 from tests.utils import mock_getRawHeaders
-import json
 
 
 class RegisterRestServletTestCase(unittest.TestCase):
diff --git a/tests/rest/media/v1/test_media_storage.py b/tests/rest/media/v1/test_media_storage.py
index c5e2f5549a..bf254a260d 100644
--- a/tests/rest/media/v1/test_media_storage.py
+++ b/tests/rest/media/v1/test_media_storage.py
@@ -14,21 +14,21 @@
 # limitations under the License.
 
 
+import os
+import shutil
+import tempfile
+
+from mock import Mock
+
 from twisted.internet import defer, reactor
 
 from synapse.rest.media.v1._base import FileInfo
-from synapse.rest.media.v1.media_storage import MediaStorage
 from synapse.rest.media.v1.filepath import MediaFilePaths
+from synapse.rest.media.v1.media_storage import MediaStorage
 from synapse.rest.media.v1.storage_provider import FileStorageProviderBackend
 
-from mock import Mock
-
 from tests import unittest
 
-import os
-import shutil
-import tempfile
-
 
 class MediaStorageTests(unittest.TestCase):
     def setUp(self):
diff --git a/tests/server.py b/tests/server.py
index 73069dff52..e93f5a7f94 100644
--- a/tests/server.py
+++ b/tests/server.py
@@ -1,15 +1,17 @@
+import json
 from io import BytesIO
 
-import attr
-import json
 from six import text_type
 
-from twisted.python.failure import Failure
+import attr
+
+from twisted.internet import threads
 from twisted.internet.defer import Deferred
+from twisted.python.failure import Failure
 from twisted.test.proto_helpers import MemoryReactorClock
 
 from synapse.http.site import SynapseRequest
-from twisted.internet import threads
+
 from tests.utils import setup_test_homeserver as _sth
 
 
@@ -20,7 +22,7 @@ class FakeChannel(object):
     wire).
     """
 
-    result = attr.ib(factory=dict)
+    result = attr.ib(default=attr.Factory(dict))
 
     @property
     def json_body(self):
diff --git a/tests/storage/test__base.py b/tests/storage/test__base.py
index 3cfa21c9f8..6d6f00c5c5 100644
--- a/tests/storage/test__base.py
+++ b/tests/storage/test__base.py
@@ -14,15 +14,15 @@
 # limitations under the License.
 
 
-from tests import unittest
-from twisted.internet import defer
-
 from mock import Mock
 
-from synapse.util.async import ObservableDeferred
+from twisted.internet import defer
 
+from synapse.util.async import ObservableDeferred
 from synapse.util.caches.descriptors import Cache, cached
 
+from tests import unittest
+
 
 class CacheTestCase(unittest.TestCase):
 
diff --git a/tests/storage/test_appservice.py b/tests/storage/test_appservice.py
index 00825498b1..099861b27c 100644
--- a/tests/storage/test_appservice.py
+++ b/tests/storage/test_appservice.py
@@ -12,21 +12,25 @@
 # 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.
+import json
+import os
 import tempfile
-from synapse.config._base import ConfigError
-from tests import unittest
+
+from mock import Mock
+
+import yaml
+
 from twisted.internet import defer
 
-from tests.utils import setup_test_homeserver
 from synapse.appservice import ApplicationService, ApplicationServiceState
+from synapse.config._base import ConfigError
 from synapse.storage.appservice import (
-    ApplicationServiceStore, ApplicationServiceTransactionStore
+    ApplicationServiceStore,
+    ApplicationServiceTransactionStore,
 )
 
-import json
-import os
-import yaml
-from mock import Mock
+from tests import unittest
+from tests.utils import setup_test_homeserver
 
 
 class ApplicationServiceStoreTestCase(unittest.TestCase):
diff --git a/tests/storage/test_background_update.py b/tests/storage/test_background_update.py
index 1286b4ce2d..ab1f310572 100644
--- a/tests/storage/test_background_update.py
+++ b/tests/storage/test_background_update.py
@@ -1,10 +1,10 @@
-from tests import unittest
+from mock import Mock
+
 from twisted.internet import defer
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
-from mock import Mock
-
 
 class BackgroundUpdateTestCase(unittest.TestCase):
 
diff --git a/tests/storage/test_base.py b/tests/storage/test_base.py
index 0ac910e76f..1d1234ee39 100644
--- a/tests/storage/test_base.py
+++ b/tests/storage/test_base.py
@@ -14,18 +14,18 @@
 # limitations under the License.
 
 
-from tests import unittest
-from twisted.internet import defer
+from collections import OrderedDict
 
 from mock import Mock
 
-from collections import OrderedDict
+from twisted.internet import defer
 
 from synapse.server import HomeServer
-
 from synapse.storage._base import SQLBaseStore
 from synapse.storage.engines import create_engine
 
+from tests import unittest
+
 
 class SQLBaseStoreTestCase(unittest.TestCase):
     """ Test the "simple" SQL generating methods in SQLBaseStore. """
diff --git a/tests/storage/test_devices.py b/tests/storage/test_devices.py
index f8725acea0..a54cc6bc32 100644
--- a/tests/storage/test_devices.py
+++ b/tests/storage/test_devices.py
@@ -16,6 +16,7 @@
 from twisted.internet import defer
 
 import synapse.api.errors
+
 import tests.unittest
 import tests.utils
 
diff --git a/tests/storage/test_directory.py b/tests/storage/test_directory.py
index 95709cd50a..129ebaf343 100644
--- a/tests/storage/test_directory.py
+++ b/tests/storage/test_directory.py
@@ -14,12 +14,12 @@
 # limitations under the License.
 
 
-from tests import unittest
 from twisted.internet import defer
 
 from synapse.storage.directory import DirectoryStore
-from synapse.types import RoomID, RoomAlias
+from synapse.types import RoomAlias, RoomID
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
 
diff --git a/tests/storage/test_event_push_actions.py b/tests/storage/test_event_push_actions.py
index 3cbf9a78b1..8430fc7ba6 100644
--- a/tests/storage/test_event_push_actions.py
+++ b/tests/storage/test_event_push_actions.py
@@ -13,11 +13,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from mock import Mock
+
 from twisted.internet import defer
 
 import tests.unittest
 import tests.utils
-from mock import Mock
 
 USER_ID = "@user:example.com"
 
diff --git a/tests/storage/test_keys.py b/tests/storage/test_keys.py
index 0be790d8f8..3a3d002782 100644
--- a/tests/storage/test_keys.py
+++ b/tests/storage/test_keys.py
@@ -14,6 +14,7 @@
 # limitations under the License.
 
 import signedjson.key
+
 from twisted.internet import defer
 
 import tests.unittest
diff --git a/tests/storage/test_presence.py b/tests/storage/test_presence.py
index f5fcb611d4..3276b39504 100644
--- a/tests/storage/test_presence.py
+++ b/tests/storage/test_presence.py
@@ -14,13 +14,13 @@
 # limitations under the License.
 
 
-from tests import unittest
 from twisted.internet import defer
 
 from synapse.storage.presence import PresenceStore
 from synapse.types import UserID
 
-from tests.utils import setup_test_homeserver, MockClock
+from tests import unittest
+from tests.utils import MockClock, setup_test_homeserver
 
 
 class PresenceStoreTestCase(unittest.TestCase):
diff --git a/tests/storage/test_profile.py b/tests/storage/test_profile.py
index 423710c9c1..2c95e5e95a 100644
--- a/tests/storage/test_profile.py
+++ b/tests/storage/test_profile.py
@@ -14,12 +14,12 @@
 # limitations under the License.
 
 
-from tests import unittest
 from twisted.internet import defer
 
 from synapse.storage.profile import ProfileStore
 from synapse.types import UserID
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
 
diff --git a/tests/storage/test_redaction.py b/tests/storage/test_redaction.py
index 888ddfaddd..475ec900c4 100644
--- a/tests/storage/test_redaction.py
+++ b/tests/storage/test_redaction.py
@@ -14,16 +14,16 @@
 # limitations under the License.
 
 
-from tests import unittest
+from mock import Mock
+
 from twisted.internet import defer
 
 from synapse.api.constants import EventTypes, Membership
-from synapse.types import UserID, RoomID
+from synapse.types import RoomID, UserID
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
-from mock import Mock
-
 
 class RedactionTestCase(unittest.TestCase):
 
diff --git a/tests/storage/test_registration.py b/tests/storage/test_registration.py
index f863b75846..7821ea3fa3 100644
--- a/tests/storage/test_registration.py
+++ b/tests/storage/test_registration.py
@@ -14,9 +14,9 @@
 # limitations under the License.
 
 
-from tests import unittest
 from twisted.internet import defer
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
 
diff --git a/tests/storage/test_room.py b/tests/storage/test_room.py
index ef8a4d234f..ae8ae94b6d 100644
--- a/tests/storage/test_room.py
+++ b/tests/storage/test_room.py
@@ -14,12 +14,12 @@
 # limitations under the License.
 
 
-from tests import unittest
 from twisted.internet import defer
 
 from synapse.api.constants import EventTypes
-from synapse.types import UserID, RoomID, RoomAlias
+from synapse.types import RoomAlias, RoomID, UserID
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
 
diff --git a/tests/storage/test_roommember.py b/tests/storage/test_roommember.py
index 657b279e5d..c5fd54f67e 100644
--- a/tests/storage/test_roommember.py
+++ b/tests/storage/test_roommember.py
@@ -14,16 +14,16 @@
 # limitations under the License.
 
 
-from tests import unittest
+from mock import Mock
+
 from twisted.internet import defer
 
 from synapse.api.constants import EventTypes, Membership
-from synapse.types import UserID, RoomID
+from synapse.types import RoomID, UserID
 
+from tests import unittest
 from tests.utils import setup_test_homeserver
 
-from mock import Mock
-
 
 class RoomMemberStoreTestCase(unittest.TestCase):
 
diff --git a/tests/storage/test_user_directory.py b/tests/storage/test_user_directory.py
index 0891308f25..23fad12bca 100644
--- a/tests/storage/test_user_directory.py
+++ b/tests/storage/test_user_directory.py
@@ -17,6 +17,7 @@ from twisted.internet import defer
 
 from synapse.storage import UserDirectoryStore
 from synapse.storage.roommember import ProfileInfo
+
 from tests import unittest
 from tests.utils import setup_test_homeserver
 
diff --git a/tests/test_distributor.py b/tests/test_distributor.py
index c066381698..04a88056f1 100644
--- a/tests/test_distributor.py
+++ b/tests/test_distributor.py
@@ -13,13 +13,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from . import unittest
-from twisted.internet import defer
-
 from mock import Mock, patch
 
+from twisted.internet import defer
+
 from synapse.util.distributor import Distributor
 
+from . import unittest
+
 
 class DistributorTestCase(unittest.TestCase):
 
diff --git a/tests/test_dns.py b/tests/test_dns.py
index 3b360a0fc7..b647d92697 100644
--- a/tests/test_dns.py
+++ b/tests/test_dns.py
@@ -13,16 +13,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from . import unittest
+from mock import Mock
+
 from twisted.internet import defer
 from twisted.names import dns, error
 
-from mock import Mock
-
 from synapse.http.endpoint import resolve_service
 
 from tests.utils import MockClock
 
+from . import unittest
+
 
 @unittest.DEBUG
 class DnsTestCase(unittest.TestCase):
diff --git a/tests/test_event_auth.py b/tests/test_event_auth.py
index d08e19c53a..06112430e5 100644
--- a/tests/test_event_auth.py
+++ b/tests/test_event_auth.py
@@ -13,10 +13,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import unittest
+
 from synapse import event_auth
 from synapse.api.errors import AuthError
 from synapse.events import FrozenEvent
-import unittest
 
 
 class EventAuthTestCase(unittest.TestCase):
diff --git a/tests/test_federation.py b/tests/test_federation.py
index fc80a69369..159a136971 100644
--- a/tests/test_federation.py
+++ b/tests/test_federation.py
@@ -1,14 +1,14 @@
 
-from twisted.internet.defer import succeed, maybeDeferred
+from mock import Mock
+
+from twisted.internet.defer import maybeDeferred, succeed
 
-from synapse.util import Clock
 from synapse.events import FrozenEvent
 from synapse.types import Requester, UserID
+from synapse.util import Clock
 
 from tests import unittest
-from tests.server import setup_test_homeserver, ThreadedMemoryReactorClock
-
-from mock import Mock
+from tests.server import ThreadedMemoryReactorClock, setup_test_homeserver
 
 
 class MessageAcceptTests(unittest.TestCase):
diff --git a/tests/test_preview.py b/tests/test_preview.py
index 5bd36c74aa..446843367e 100644
--- a/tests/test_preview.py
+++ b/tests/test_preview.py
@@ -13,12 +13,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from . import unittest
-
 from synapse.rest.media.v1.preview_url_resource import (
-    summarize_paragraphs, decode_and_calc_og
+    decode_and_calc_og,
+    summarize_paragraphs,
 )
 
+from . import unittest
+
 
 class PreviewTestCase(unittest.TestCase):
 
diff --git a/tests/test_server.py b/tests/test_server.py
index 8ad822c43b..4192013f6d 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -4,9 +4,10 @@ import re
 from twisted.internet.defer import Deferred
 from twisted.test.proto_helpers import MemoryReactorClock
 
-from synapse.util import Clock
 from synapse.api.errors import Codes, SynapseError
 from synapse.http.server import JsonResource
+from synapse.util import Clock
+
 from tests import unittest
 from tests.server import make_request, setup_test_homeserver
 
diff --git a/tests/test_state.py b/tests/test_state.py
index 71c412faf4..c0f2d1152d 100644
--- a/tests/test_state.py
+++ b/tests/test_state.py
@@ -13,18 +13,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from tests import unittest
+from mock import Mock
+
 from twisted.internet import defer
 
-from synapse.events import FrozenEvent
 from synapse.api.auth import Auth
 from synapse.api.constants import EventTypes, Membership
+from synapse.events import FrozenEvent
 from synapse.state import StateHandler, StateResolutionHandler
 
-from .utils import MockClock
-
-from mock import Mock
+from tests import unittest
 
+from .utils import MockClock
 
 _next_event_id = 1000
 
diff --git a/tests/test_test_utils.py b/tests/test_test_utils.py
index d28bb726bb..bc97c12245 100644
--- a/tests/test_test_utils.py
+++ b/tests/test_test_utils.py
@@ -14,7 +14,6 @@
 # limitations under the License.
 
 from tests import unittest
-
 from tests.utils import MockClock
 
 
diff --git a/tests/test_types.py b/tests/test_types.py
index 115def2287..729bd676c1 100644
--- a/tests/test_types.py
+++ b/tests/test_types.py
@@ -13,11 +13,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from tests import unittest
-
 from synapse.api.errors import SynapseError
 from synapse.server import HomeServer
-from synapse.types import UserID, RoomAlias, GroupID
+from synapse.types import GroupID, RoomAlias, UserID
+
+from tests import unittest
 
 mock_homeserver = HomeServer(hostname="my.domain")
 
diff --git a/tests/util/caches/test_descriptors.py b/tests/util/caches/test_descriptors.py
index a94d566c96..8176a7dabd 100644
--- a/tests/util/caches/test_descriptors.py
+++ b/tests/util/caches/test_descriptors.py
@@ -13,14 +13,17 @@
 # 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 functools import partial
 import logging
+from functools import partial
 
 import mock
+
+from twisted.internet import defer, reactor
+
 from synapse.api.errors import SynapseError
 from synapse.util import logcontext
-from twisted.internet import defer, reactor
 from synapse.util.caches import descriptors
+
 from tests import unittest
 
 logger = logging.getLogger(__name__)
diff --git a/tests/util/test_dict_cache.py b/tests/util/test_dict_cache.py
index 543ac5bed9..26f2fa5800 100644
--- a/tests/util/test_dict_cache.py
+++ b/tests/util/test_dict_cache.py
@@ -14,10 +14,10 @@
 # limitations under the License.
 
 
-from tests import unittest
-
 from synapse.util.caches.dictionary_cache import DictionaryCache
 
+from tests import unittest
+
 
 class DictCacheTestCase(unittest.TestCase):
 
diff --git a/tests/util/test_expiring_cache.py b/tests/util/test_expiring_cache.py
index 31d24adb8b..d12b5e838b 100644
--- a/tests/util/test_expiring_cache.py
+++ b/tests/util/test_expiring_cache.py
@@ -14,12 +14,12 @@
 # limitations under the License.
 
 
-from .. import unittest
-
 from synapse.util.caches.expiringcache import ExpiringCache
 
 from tests.utils import MockClock
 
+from .. import unittest
+
 
 class ExpiringCacheTestCase(unittest.TestCase):
 
diff --git a/tests/util/test_file_consumer.py b/tests/util/test_file_consumer.py
index c2aae8f54c..7ce5f8c258 100644
--- a/tests/util/test_file_consumer.py
+++ b/tests/util/test_file_consumer.py
@@ -14,15 +14,16 @@
 # limitations under the License.
 
 
-from twisted.internet import defer, reactor
+import threading
+
 from mock import NonCallableMock
+from six import StringIO
+
+from twisted.internet import defer, reactor
 
 from synapse.util.file_consumer import BackgroundFileConsumer
 
 from tests import unittest
-from six import StringIO
-
-import threading
 
 
 class FileConsumerTests(unittest.TestCase):
diff --git a/tests/util/test_limiter.py b/tests/util/test_limiter.py
index 9c795d9fdb..a5a767b1ff 100644
--- a/tests/util/test_limiter.py
+++ b/tests/util/test_limiter.py
@@ -14,12 +14,12 @@
 # limitations under the License.
 
 
-from tests import unittest
-
 from twisted.internet import defer
 
 from synapse.util.async import Limiter
 
+from tests import unittest
+
 
 class LimiterTestCase(unittest.TestCase):
 
diff --git a/tests/util/test_linearizer.py b/tests/util/test_linearizer.py
index bf7e3aa885..c95907b32c 100644
--- a/tests/util/test_linearizer.py
+++ b/tests/util/test_linearizer.py
@@ -13,13 +13,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from synapse.util import logcontext, Clock
-from tests import unittest
+from six.moves import range
 
 from twisted.internet import defer, reactor
 
+from synapse.util import Clock, logcontext
 from synapse.util.async import Linearizer
-from six.moves import range
+
+from tests import unittest
 
 
 class LinearizerTestCase(unittest.TestCase):
diff --git a/tests/util/test_logcontext.py b/tests/util/test_logcontext.py
index 9cf90fcfc4..c54001f7a4 100644
--- a/tests/util/test_logcontext.py
+++ b/tests/util/test_logcontext.py
@@ -1,11 +1,11 @@
 import twisted.python.failure
-from twisted.internet import defer
-from twisted.internet import reactor
-from .. import unittest
+from twisted.internet import defer, reactor
 
-from synapse.util import logcontext, Clock
+from synapse.util import Clock, logcontext
 from synapse.util.logcontext import LoggingContext
 
+from .. import unittest
+
 
 class LoggingContextTestCase(unittest.TestCase):
 
diff --git a/tests/util/test_logformatter.py b/tests/util/test_logformatter.py
index 1a1a8412f2..297aebbfbe 100644
--- a/tests/util/test_logformatter.py
+++ b/tests/util/test_logformatter.py
@@ -15,6 +15,7 @@
 import sys
 
 from synapse.util.logformatter import LogFormatter
+
 from tests import unittest
 
 
diff --git a/tests/util/test_lrucache.py b/tests/util/test_lrucache.py
index dfb78cb8bd..9b36ef4482 100644
--- a/tests/util/test_lrucache.py
+++ b/tests/util/test_lrucache.py
@@ -14,12 +14,12 @@
 # limitations under the License.
 
 
-from .. import unittest
+from mock import Mock
 
 from synapse.util.caches.lrucache import LruCache
 from synapse.util.caches.treecache import TreeCache
 
-from mock import Mock
+from .. import unittest
 
 
 class LruCacheTestCase(unittest.TestCase):
diff --git a/tests/util/test_rwlock.py b/tests/util/test_rwlock.py
index 1d745ae1a7..24194e3b25 100644
--- a/tests/util/test_rwlock.py
+++ b/tests/util/test_rwlock.py
@@ -14,10 +14,10 @@
 # limitations under the License.
 
 
-from tests import unittest
-
 from synapse.util.async import ReadWriteLock
 
+from tests import unittest
+
 
 class ReadWriteLockTestCase(unittest.TestCase):
 
diff --git a/tests/util/test_snapshot_cache.py b/tests/util/test_snapshot_cache.py
index d3a8630c2f..0f5b32fcc0 100644
--- a/tests/util/test_snapshot_cache.py
+++ b/tests/util/test_snapshot_cache.py
@@ -14,10 +14,11 @@
 # limitations under the License.
 
 
-from .. import unittest
+from twisted.internet.defer import Deferred
 
 from synapse.util.caches.snapshot_cache import SnapshotCache
-from twisted.internet.defer import Deferred
+
+from .. import unittest
 
 
 class SnapshotCacheTestCase(unittest.TestCase):
diff --git a/tests/util/test_stream_change_cache.py b/tests/util/test_stream_change_cache.py
index 67ece166c7..e3897c0d19 100644
--- a/tests/util/test_stream_change_cache.py
+++ b/tests/util/test_stream_change_cache.py
@@ -1,8 +1,9 @@
-from tests import unittest
 from mock import patch
 
 from synapse.util.caches.stream_change_cache import StreamChangeCache
 
+from tests import unittest
+
 
 class StreamChangeCacheTests(unittest.TestCase):
     """
diff --git a/tests/util/test_treecache.py b/tests/util/test_treecache.py
index 7ab578a185..a5f2261208 100644
--- a/tests/util/test_treecache.py
+++ b/tests/util/test_treecache.py
@@ -14,10 +14,10 @@
 # limitations under the License.
 
 
-from .. import unittest
-
 from synapse.util.caches.treecache import TreeCache
 
+from .. import unittest
+
 
 class TreeCacheTestCase(unittest.TestCase):
     def test_get_set_onelevel(self):
diff --git a/tests/util/test_wheel_timer.py b/tests/util/test_wheel_timer.py
index fdb24a48b0..03201a4d9b 100644
--- a/tests/util/test_wheel_timer.py
+++ b/tests/util/test_wheel_timer.py
@@ -13,10 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .. import unittest
-
 from synapse.util.wheel_timer import WheelTimer
 
+from .. import unittest
+
 
 class WheelTimerTestCase(unittest.TestCase):
     def test_single_insert_fetch(self):
diff --git a/tests/utils.py b/tests/utils.py
index 0b501e0786..16ea7f85d1 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -15,9 +15,10 @@
 
 import hashlib
 from inspect import getcallargs
-from six.moves.urllib import parse as urlparse
 
 from mock import Mock, patch
+from six.moves.urllib import parse as urlparse
+
 from twisted.internet import defer, reactor
 
 from synapse.api.errors import CodeMessageException, cs_error
@@ -64,6 +65,7 @@ def setup_test_homeserver(name="test", datastore=None, config=None, reactor=None
         config.federation_domain_whitelist = None
         config.federation_rc_reject_limit = 10
         config.federation_rc_sleep_limit = 10
+        config.federation_rc_sleep_delay = 100
         config.federation_rc_concurrent = 10
         config.filter_timeline_limit = 5000
         config.user_directory_search_all_users = False