diff --git a/tests/storage/test_redaction.py b/tests/storage/test_redaction.py
new file mode 100644
index 0000000000..2406597c3f
--- /dev/null
+++ b/tests/storage/test_redaction.py
@@ -0,0 +1,181 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014 OpenMarket 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 tests import unittest
+from twisted.internet import defer
+
+from synapse.server import HomeServer
+from synapse.api.constants import Membership
+from synapse.api.events.room import (
+ RoomMemberEvent, MessageEvent, RoomRedactionEvent,
+)
+
+from tests.utils import SQLiteMemoryDbPool
+
+
+class StreamStoreTestCase(unittest.TestCase):
+
+ @defer.inlineCallbacks
+ def setUp(self):
+ db_pool = SQLiteMemoryDbPool()
+ yield db_pool.prepare()
+
+ hs = HomeServer(
+ "test",
+ db_pool=db_pool,
+ )
+
+ self.store = hs.get_datastore()
+ self.event_factory = hs.get_event_factory()
+
+ self.u_alice = hs.parse_userid("@alice:test")
+
+ self.room1 = hs.parse_roomid("!abc123:test")
+
+ self.depth = 1
+
+ @defer.inlineCallbacks
+ def inject_room_member(self, room, user, membership, prev_state=None):
+ self.depth += 1
+
+ event = self.event_factory.create_event(
+ etype=RoomMemberEvent.TYPE,
+ user_id=user.to_string(),
+ state_key=user.to_string(),
+ room_id=room.to_string(),
+ membership=membership,
+ content={"membership": membership},
+ depth=self.depth,
+ )
+
+ if prev_state:
+ event.prev_state = prev_state
+
+ # Have to create a join event using the eventfactory
+ yield self.store.persist_event(
+ event
+ )
+
+ defer.returnValue(event)
+
+ @defer.inlineCallbacks
+ def inject_message(self, room, user, body):
+ self.depth += 1
+
+ event = self.event_factory.create_event(
+ etype=MessageEvent.TYPE,
+ user_id=user.to_string(),
+ room_id=room.to_string(),
+ content={"body": body, "msgtype": u"message"},
+ depth=self.depth,
+ )
+
+ yield self.store.persist_event(
+ event
+ )
+
+ defer.returnValue(event)
+
+ @defer.inlineCallbacks
+ def inject_redaction(self, room, event_id, user, reason):
+ event = self.event_factory.create_event(
+ etype=RoomRedactionEvent.TYPE,
+ user_id=user.to_string(),
+ room_id=room.to_string(),
+ content={"reason": reason},
+ depth=self.depth,
+ redacts=event_id,
+ )
+
+ yield self.store.persist_event(
+ event
+ )
+
+ defer.returnValue(event)
+
+ @defer.inlineCallbacks
+ def test_redact(self):
+ yield self.inject_room_member(
+ self.room1, self.u_alice, Membership.JOIN
+ )
+
+ start = yield self.store.get_room_events_max_id()
+
+ msg_event = yield self.inject_message(self.room1, self.u_alice, u"t")
+
+ end = yield self.store.get_room_events_max_id()
+
+ results, _ = yield self.store.get_room_events_stream(
+ self.u_alice.to_string(),
+ start,
+ end,
+ None, # Is currently ignored
+ )
+
+ self.assertEqual(1, len(results))
+
+ # Check event has not been redacted:
+ event = results[0]
+
+ self.assertObjectHasAttributes(
+ {
+ "type": MessageEvent.TYPE,
+ "user_id": self.u_alice.to_string(),
+ "content": {"body": "t", "msgtype": "message"},
+ },
+ event,
+ )
+
+ self.assertFalse(hasattr(event, "redacted_because"))
+
+ # Redact event
+ reason = "Because I said so"
+ yield self.inject_redaction(
+ self.room1, msg_event.event_id, self.u_alice, reason
+ )
+
+ results, _ = yield self.store.get_room_events_stream(
+ self.u_alice.to_string(),
+ start,
+ end,
+ None, # Is currently ignored
+ )
+
+ self.assertEqual(1, len(results))
+
+ # Check redaction
+
+ event = results[0]
+
+ self.assertObjectHasAttributes(
+ {
+ "type": MessageEvent.TYPE,
+ "user_id": self.u_alice.to_string(),
+ "content": {},
+ },
+ event,
+ )
+
+ self.assertTrue(hasattr(event, "redacted_because"))
+
+ self.assertObjectHasAttributes(
+ {
+ "type": RoomRedactionEvent.TYPE,
+ "user_id": self.u_alice.to_string(),
+ "content": {"reason": reason},
+ },
+ event.redacted_because,
+ )
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