Add a slaved events store class

Add a test to check that get_room_names_and_aliases does the same
thing on both the master and on the slave data store.

tests/replication/slave/storage/test_events.py

@@ -0,0 +1,114 @@
+# Copyright 2016 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 ._base import BaseSlavedStoreTestCase
+
+from synapse.types import UserID
+from synapse.events import FrozenEvent
+from synapse.events.snapshot import EventContext
+
+from twisted.internet import defer
+
+USER_ID = "@feeling:blue"
+USER = UserID.from_string(USER_ID)
+OUTLIER = {"outlier": True}
+ROOM_ID = "!room:blue"
+
+
+class SlavedEventStoreTestCase(BaseSlavedStoreTestCase):
+
+    @defer.inlineCallbacks
+    def test_room_name_and_aliases(self):
+        create = yield self.persist(type="m.room.create", key="", creator=USER_ID)
+        yield self.persist(type="m.room.member", key=USER_ID, membership="join")
+        yield self.persist(type="m.room.name", key="", name="name1")
+        yield self.persist(
+            type="m.room.aliases", key="blue", aliases=["#1:blue"]
+        )
+        yield self.replicate()
+        yield self.check(
+            "get_room_name_and_aliases", (ROOM_ID,), ("name1", ["#1:blue"])
+        )
+
+        # Set the room name.
+        yield self.persist(type="m.room.name", key="", name="name2")
+        yield self.replicate()
+        yield self.check(
+            "get_room_name_and_aliases", (ROOM_ID,), ("name2", ["#1:blue"])
+        )
+
+        # Set the room aliases.
+        yield self.persist(
+            type="m.room.aliases", key="blue", aliases=["#2:blue"]
+        )
+        yield self.replicate()
+        yield self.check(
+            "get_room_name_and_aliases", (ROOM_ID,), ("name2", ["#2:blue"])
+        )
+
+        # Leave and join the room clobbering the state.
+        yield self.persist(type="m.room.member", key=USER_ID, membership="leave")
+        yield self.persist(
+            type="m.room.member", key=USER_ID, membership="join",
+            reset_state=[create]
+        )
+        yield self.replicate()
+
+        yield self.check(
+            "get_room_name_and_aliases", (ROOM_ID,), (None, [])
+        )
+
+    event_id = 0
+
+    @defer.inlineCallbacks
+    def persist(
+            self, sender=USER_ID, room_id=ROOM_ID, type={}, key=None,
+            internal={},
+            state=None, reset_state=False, backfill=False,
+            depth=None, prev_events=[], auth_events=[], prev_state=[],
+            **content
+    ):
+        if depth is None:
+            depth = self.event_id
+
+        event_dict = {
+            "sender": sender,
+            "type": type,
+            "content": content,
+            "event_id": "$%d:blue" % (self.event_id,),
+            "room_id": room_id,
+            "depth": depth,
+            "origin_server_ts": self.event_id,
+            "prev_events": prev_events,
+            "auth_events": auth_events,
+        }
+        if key is not None:
+            event_dict["state_key"] = key
+            event_dict["prev_state"] = prev_state
+
+        event = FrozenEvent(event_dict, internal_metadata_dict=internal)
+
+        self.event_id += 1
+
+        context = EventContext(current_state=state)
+
+        if backfill:
+            yield self.master_store.persist_events(
+                [(event, context)], backfilled=True
+            )
+        else:
+            yield self.master_store.persist_event(
+                event, context, current_state=reset_state
+            )
+        defer.returnValue(event)