1 files changed, 67 insertions, 1 deletions
diff --git a/tests/unittest.py b/tests/unittest.py
index 561cebc223..31997a0f31 100644
--- a/tests/unittest.py
+++ b/tests/unittest.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2018 New Vector
+# Copyright 2019 Matrix.org Federation C.I.C
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,6 +14,7 @@
 # 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 gc
 import hashlib
 import hmac
@@ -27,13 +29,17 @@ from twisted.internet.defer import Deferred, succeed
 from twisted.python.threadpool import ThreadPool
 from twisted.trial import unittest
 
-from synapse.api.constants import EventTypes
+from synapse.api.constants import EventTypes, Membership
+from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
 from synapse.config.homeserver import HomeServerConfig
+from synapse.config.ratelimiting import FederationRateLimitConfig
+from synapse.federation.transport import server as federation_server
 from synapse.http.server import JsonResource
 from synapse.http.site import SynapseRequest
 from synapse.logging.context import LoggingContext
 from synapse.server import HomeServer
 from synapse.types import Requester, UserID, create_requester
+from synapse.util.ratelimitutils import FederationRateLimiter
 
 from tests.server import get_clock, make_request, render, setup_test_homeserver
 from tests.test_utils.logging_setup import setup_logging
@@ -559,6 +565,66 @@ class HomeserverTestCase(TestCase):
         self.render(request)
         self.assertEqual(channel.code, 403, channel.result)
 
+    def inject_room_member(self, room: str, user: str, membership: Membership) -> None:
+        """
+        Inject a membership event into a room.
+
+        Args:
+            room: Room ID to inject the event into.
+            user: MXID of the user to inject the membership for.
+            membership: The membership type.
+        """
+        event_builder_factory = self.hs.get_event_builder_factory()
+        event_creation_handler = self.hs.get_event_creation_handler()
+
+        room_version = self.get_success(self.hs.get_datastore().get_room_version(room))
+
+        builder = event_builder_factory.for_room_version(
+            KNOWN_ROOM_VERSIONS[room_version],
+            {
+                "type": EventTypes.Member,
+                "sender": user,
+                "state_key": user,
+                "room_id": room,
+                "content": {"membership": membership},
+            },
+        )
+
+        event, context = self.get_success(
+            event_creation_handler.create_new_client_event(builder)
+        )
+
+        self.get_success(
+            self.hs.get_storage().persistence.persist_event(event, context)
+        )
+
+
+class FederatingHomeserverTestCase(HomeserverTestCase):
+    """
+    A federating homeserver that authenticates incoming requests as `other.example.com`.
+    """
+
+    def prepare(self, reactor, clock, homeserver):
+        class Authenticator(object):
+            def authenticate_request(self, request, content):
+                return succeed("other.example.com")
+
+        ratelimiter = FederationRateLimiter(
+            clock,
+            FederationRateLimitConfig(
+                window_size=1,
+                sleep_limit=1,
+                sleep_msec=1,
+                reject_limit=1000,
+                concurrent_requests=1000,
+            ),
+        )
+        federation_server.register_servlets(
+            homeserver, self.resource, Authenticator(), ratelimiter
+        )
+
+        return super().prepare(reactor, clock, homeserver)
+
 
 def override_config(extra_config):
     """A decorator which can be applied to test functions to give additional HS config