diff --git a/tests/storage/test_redaction.py b/tests/storage/test_redaction.py
new file mode 100644
index 000000000..2406597c3
--- /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,
+        )