docs: clarify routing function docstring and strengthen TTL test assertions

- Remove misleading reference to 'key patterns' in routing wrapper docstring
  since the routing function only receives the collection name, not keys
- Add explicit TTL validation in ttl_many test to ensure returned values
  are not None and are positive
- Split compound assertions to comply with PT018 lint rule

Co-authored-by: William Easton <[email protected]>

Author: github-actions[bot]

key-value/key-value-aio/src/key_value/aio/wrappers/routing/wrapper.py

@@ -14,7 +14,7 @@ class RoutingWrapper(BaseWrapper):
 
     The routing function receives the collection name and returns the appropriate store.
     This allows dynamic routing of requests to different backing stores based on
-    collection name, key patterns, or any other custom logic.
+    collection name or other custom logic.
 
     Example:
         def route_by_collection(collection: str | None) -> AsyncKeyValue | None:

key-value/key-value-aio/tests/stores/wrappers/test_routing.py

@@ -151,6 +151,10 @@ def route(collection: str | None) -> AsyncKeyValue | None:
         assert len(results) == 2
         assert results[0][0] == {"data": "v2"}
         assert results[1][0] == {"data": "v3"}
+        assert results[0][1] is not None
+        assert results[0][1] > 0
+        assert results[1][1] is not None
+        assert results[1][1] > 0
 
 
 class TestCollectionRoutingWrapper: