Add final type hint to tests.unittest. (#15072)

Adds a return type to HomeServerTestCase.make_homeserver and deal
with any variables which are no longer Any.

tests/replication/tcp/streams/test_events.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import Any, List, Optional
+from typing import Any, List, Optional, Sequence
 
 from twisted.test.proto_helpers import MemoryReactor
 
@@ -139,7 +139,7 @@ class EventsStreamTestCase(BaseStreamTestCase):
         )
 
         # this is the point in the DAG where we make a fork
-        fork_point: List[str] = self.get_success(
+        fork_point: Sequence[str] = self.get_success(
             self.hs.get_datastores().main.get_latest_event_ids_in_room(self.room_id)
         )
 
@@ -168,7 +168,7 @@ class EventsStreamTestCase(BaseStreamTestCase):
         pl_event = self.get_success(
             inject_event(
                 self.hs,
-                prev_event_ids=prev_events,
+                prev_event_ids=list(prev_events),
                 type=EventTypes.PowerLevels,
                 state_key="",
                 sender=self.user_id,
@@ -294,7 +294,7 @@ class EventsStreamTestCase(BaseStreamTestCase):
         )
 
         # this is the point in the DAG where we make a fork
-        fork_point: List[str] = self.get_success(
+        fork_point: Sequence[str] = self.get_success(
             self.hs.get_datastores().main.get_latest_event_ids_in_room(self.room_id)
         )
 
@@ -323,7 +323,7 @@ class EventsStreamTestCase(BaseStreamTestCase):
             e = self.get_success(
                 inject_event(
                     self.hs,
-                    prev_event_ids=prev_events,
+                    prev_event_ids=list(prev_events),
                     type=EventTypes.PowerLevels,
                     state_key="",
                     sender=self.user_id,

tests/replication/tcp/streams/test_partial_state.py

@@ -37,7 +37,7 @@ class PartialStateStreamsTestCase(BaseMultiWorkerStreamTestCase):
         room_id = self.helper.create_room_as("@bob:test")
         # Mark the room as partial-stated.
         self.get_success(
-            self.store.store_partial_state_room(room_id, ["serv1", "serv2"], 0, "serv1")
+            self.store.store_partial_state_room(room_id, {"serv1", "serv2"}, 0, "serv1")
         )
 
         worker = self.make_worker_hs("synapse.app.generic_worker")

tests/replication/tcp/streams/test_typing.py

@@ -13,7 +13,7 @@
 # limitations under the License.
 from unittest.mock import Mock
 
-from synapse.handlers.typing import RoomMember
+from synapse.handlers.typing import RoomMember, TypingWriterHandler
 from synapse.replication.tcp.streams import TypingStream
 from synapse.util.caches.stream_change_cache import StreamChangeCache
 
@@ -33,6 +33,7 @@ class TypingStreamTestCase(BaseStreamTestCase):
 
     def test_typing(self) -> None:
         typing = self.hs.get_typing_handler()
+        assert isinstance(typing, TypingWriterHandler)
 
         self.reconnect()
 
@@ -88,6 +89,7 @@ class TypingStreamTestCase(BaseStreamTestCase):
         sends the proper position and RDATA).
         """
         typing = self.hs.get_typing_handler()
+        assert isinstance(typing, TypingWriterHandler)
 
         self.reconnect()
 

tests/replication/tcp/test_handler.py

@@ -127,6 +127,7 @@ class ChannelsTestCase(BaseMultiWorkerStreamTestCase):
 
         # ... updating the cache ID gen on the master still shouldn't cause the
         # deferred to wake up.
+        assert store._cache_id_gen is not None
         ctx = store._cache_id_gen.get_next()
         self.get_success(ctx.__aenter__())
         self.get_success(ctx.__aexit__(None, None, None))