diff --git a/tests/federation/test_federation_client.py b/tests/federation/test_federation_client.py
new file mode 100644
index 0000000000..ec8864dafe
--- /dev/null
+++ b/tests/federation/test_federation_client.py
@@ -0,0 +1,149 @@
+# Copyright 2022 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.
+# 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.
+
+import json
+from unittest import mock
+
+import twisted.web.client
+from twisted.internet import defer
+from twisted.internet.protocol import Protocol
+from twisted.python.failure import Failure
+from twisted.test.proto_helpers import MemoryReactor
+
+from synapse.api.room_versions import RoomVersions
+from synapse.server import HomeServer
+from synapse.types import JsonDict
+from synapse.util import Clock
+
+from tests.unittest import FederatingHomeserverTestCase
+
+
+class FederationClientTest(FederatingHomeserverTestCase):
+ def prepare(self, reactor: MemoryReactor, clock: Clock, homeserver: HomeServer):
+ super().prepare(reactor, clock, homeserver)
+
+ # mock out the Agent used by the federation client, which is easier than
+ # catching the HTTPS connection and do the TLS stuff.
+ self._mock_agent = mock.create_autospec(twisted.web.client.Agent, spec_set=True)
+ homeserver.get_federation_http_client().agent = self._mock_agent
+
+ def test_get_room_state(self):
+ creator = f"@creator:{self.OTHER_SERVER_NAME}"
+ test_room_id = "!room_id"
+
+ # mock up some events to use in the response.
+ # In real life, these would have things in `prev_events` and `auth_events`, but that's
+ # a bit annoying to mock up, and the code under test doesn't care, so we don't bother.
+ create_event_dict = self.add_hashes_and_signatures(
+ {
+ "room_id": test_room_id,
+ "type": "m.room.create",
+ "state_key": "",
+ "sender": creator,
+ "content": {"creator": creator},
+ "prev_events": [],
+ "auth_events": [],
+ "origin_server_ts": 500,
+ }
+ )
+ member_event_dict = self.add_hashes_and_signatures(
+ {
+ "room_id": test_room_id,
+ "type": "m.room.member",
+ "sender": creator,
+ "state_key": creator,
+ "content": {"membership": "join"},
+ "prev_events": [],
+ "auth_events": [],
+ "origin_server_ts": 600,
+ }
+ )
+ pl_event_dict = self.add_hashes_and_signatures(
+ {
+ "room_id": test_room_id,
+ "type": "m.room.power_levels",
+ "sender": creator,
+ "state_key": "",
+ "content": {},
+ "prev_events": [],
+ "auth_events": [],
+ "origin_server_ts": 700,
+ }
+ )
+
+ # mock up the response, and have the agent return it
+ self._mock_agent.request.return_value = defer.succeed(
+ _mock_response(
+ {
+ "pdus": [
+ create_event_dict,
+ member_event_dict,
+ pl_event_dict,
+ ],
+ "auth_chain": [
+ create_event_dict,
+ member_event_dict,
+ ],
+ }
+ )
+ )
+
+ # now fire off the request
+ state_resp, auth_resp = self.get_success(
+ self.hs.get_federation_client().get_room_state(
+ "yet_another_server",
+ test_room_id,
+ "event_id",
+ RoomVersions.V9,
+ )
+ )
+
+ # check the right call got made to the agent
+ self._mock_agent.request.assert_called_once_with(
+ b"GET",
+ b"matrix://yet_another_server/_matrix/federation/v1/state/%21room_id?event_id=event_id",
+ headers=mock.ANY,
+ bodyProducer=None,
+ )
+
+ # ... and that the response is correct.
+
+ # the auth_resp should be empty because all the events are also in state
+ self.assertEqual(auth_resp, [])
+
+ # all of the events should be returned in state_resp, though not necessarily
+ # in the same order. We just check the type on the assumption that if the type
+ # is right, so is the rest of the event.
+ self.assertCountEqual(
+ [e.type for e in state_resp],
+ ["m.room.create", "m.room.member", "m.room.power_levels"],
+ )
+
+
+def _mock_response(resp: JsonDict):
+ body = json.dumps(resp).encode("utf-8")
+
+ def deliver_body(p: Protocol):
+ p.dataReceived(body)
+ p.connectionLost(Failure(twisted.web.client.ResponseDone()))
+
+ response = mock.Mock(
+ code=200,
+ phrase=b"OK",
+ headers=twisted.web.client.Headers({"content-Type": ["application/json"]}),
+ length=len(body),
+ deliverBody=deliver_body,
+ )
+ mock.seal(response)
+ return response
diff --git a/tests/unittest.py b/tests/unittest.py
index a71892cb9d..7983c1e8b8 100644
--- a/tests/unittest.py
+++ b/tests/unittest.py
@@ -51,7 +51,10 @@ from twisted.web.server import Request
from synapse import events
from synapse.api.constants import EventTypes, Membership
+from synapse.api.room_versions import KNOWN_ROOM_VERSIONS, RoomVersion
from synapse.config.homeserver import HomeServerConfig
+from synapse.config.server import DEFAULT_ROOM_VERSION
+from synapse.crypto.event_signing import add_hashes_and_signatures
from synapse.federation.transport.server import TransportLayerServer
from synapse.http.server import JsonResource
from synapse.http.site import SynapseRequest, SynapseSite
@@ -839,6 +842,24 @@ class FederatingHomeserverTestCase(HomeserverTestCase):
client_ip=client_ip,
)
+ def add_hashes_and_signatures(
+ self,
+ event_dict: JsonDict,
+ room_version: RoomVersion = KNOWN_ROOM_VERSIONS[DEFAULT_ROOM_VERSION],
+ ) -> JsonDict:
+ """Adds hashes and signatures to the given event dict
+
+ Returns:
+ The modified event dict, for convenience
+ """
+ add_hashes_and_signatures(
+ room_version,
+ event_dict,
+ signature_name=self.OTHER_SERVER_NAME,
+ signing_key=self.OTHER_SERVER_SIGNATURE_KEY,
+ )
+ return event_dict
+
def _auth_header_for_request(
origin: str,
|
