Proper types for tests.module_api (#15031)

* -> None for test methods

* A first batch of type fixes

* Introduce common parent test case

* Fixup that big test method

* tests.module_api passes mypy

* Changelog

Author: David Robertson

changelog.d/15031.misc

@@ -0,0 +1 @@
+Improve type hints.

mypy.ini

@@ -32,7 +32,6 @@ exclude = (?x)
    |synapse/storage/databases/main/cache.py
    |synapse/storage/schema/
 
-   |tests/module_api/test_api.py
    |tests/server.py
    )$
 

tests/events/test_presence_router.py

@@ -31,7 +31,11 @@
 
 from tests.handlers.test_sync import generate_sync_config
 from tests.test_utils import simple_async_mock
-from tests.unittest import FederatingHomeserverTestCase, override_config
+from tests.unittest import (
+    FederatingHomeserverTestCase,
+    HomeserverTestCase,
+    override_config,
+)
 
 
 @attr.s
@@ -470,7 +474,7 @@ def send_local_online_presence_to_with_module_test_body(self) -> None:
 
 
 def send_presence_update(
-    testcase: FederatingHomeserverTestCase,
+    testcase: HomeserverTestCase,
     user_id: str,
     access_token: str,
     presence_state: str,
@@ -491,7 +495,7 @@ def send_presence_update(
 
 
 def sync_presence(
-    testcase: FederatingHomeserverTestCase,
+    testcase: HomeserverTestCase,
     user_id: str,
     since_token: Optional[StreamToken] = None,
 ) -> Tuple[List[UserPresenceState], StreamToken]: