Cache empty responses from `/user/devices` (#11587)

If we've never made a request to a remote homeserver, we should cache the response---even if the response is "this user has no devices".

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/test_utils/__init__.py b/tests/test_utils/__init__.py

index 15ac2bfeba..f05a373aa0 100644
--- a/tests/test_utils/__init__.py
+++ b/tests/test_utils/__init__.py
@@ -19,7 +19,7 @@ import sys
 import warnings
 from asyncio import Future
 from binascii import unhexlify
-from typing import Any, Awaitable, Callable, TypeVar
+from typing import Awaitable, Callable, TypeVar
 from unittest.mock import Mock
 
 import attr
@@ -46,7 +46,7 @@ def get_awaitable_result(awaitable: Awaitable[TV]) -> TV:
     raise Exception("awaitable has not yet completed")
 
 
-def make_awaitable(result: Any) -> Awaitable[Any]:
+def make_awaitable(result: TV) -> Awaitable[TV]:
     """
     Makes an awaitable, suitable for mocking an `async` function.
     This uses Futures as they can be awaited multiple times so can be returned