diff --git a/tests/storage/test_roommember.py b/tests/storage/test_roommember.py
new file mode 100644
index 0000000000..5a6e93d4d1
--- /dev/null
+++ b/tests/storage/test_roommember.py
@@ -0,0 +1,109 @@
+# -*- 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 twisted.trial 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
+
+from tests.utils import SQLiteMemoryDbPool
+
+
+class RoomMemberStoreTestCase(unittest.TestCase):
+
+    @defer.inlineCallbacks
+    def setUp(self):
+        db_pool = SQLiteMemoryDbPool()
+        yield db_pool.prepare()
+
+        hs = HomeServer("test",
+            db_pool=db_pool,
+        )
+
+        # We can't test the RoomMemberStore on its own without the other event
+        # storage logic
+        self.store = hs.get_datastore()
+        self.event_factory = hs.get_event_factory()
+
+        self.u_alice = hs.parse_userid("@alice:test")
+        self.u_bob = hs.parse_userid("@bob:test")
+
+        self.room = hs.parse_roomid("!abc123:test")
+
+    @defer.inlineCallbacks
+    def inject_room_member(self, room, user, membership):
+        # Have to create a join event using the eventfactory
+        yield self.store.persist_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=1,
+            )
+        )
+
+    @defer.inlineCallbacks
+    def test_one_member(self):
+        yield self.inject_room_member(self.room, self.u_alice, Membership.JOIN)
+
+        self.assertEquals(
+            Membership.JOIN,
+            (yield self.store.get_room_member(
+                user_id=self.u_alice.to_string(),
+                room_id=self.room.to_string(),
+            )).membership
+        )
+        self.assertEquals(
+            [self.u_alice.to_string()],
+            [m.user_id for m in (
+                yield self.store.get_room_members(self.room.to_string())
+            )]
+        )
+        self.assertEquals(
+            [self.room.to_string()],
+            [m.room_id for m in (
+                yield self.store.get_rooms_for_user_where_membership_is(
+                    self.u_alice.to_string(), [Membership.JOIN]
+                ))
+            ]
+        )
+        self.assertFalse(
+            (yield self.store.user_rooms_intersect(
+                [self.u_alice.to_string(), self.u_bob.to_string()]
+            ))
+        )
+
+    @defer.inlineCallbacks
+    def test_two_members(self):
+        yield self.inject_room_member(self.room, self.u_alice, Membership.JOIN)
+        yield self.inject_room_member(self.room, self.u_bob, Membership.JOIN)
+
+        self.assertEquals(
+            {self.u_alice.to_string(), self.u_bob.to_string()},
+            {m.user_id for m in (
+                yield self.store.get_room_members(self.room.to_string())
+            )}
+        )
+        self.assertTrue(
+            (yield self.store.user_rooms_intersect(
+                [self.u_alice.to_string(), self.u_bob.to_string()]
+            ))
+        )