Fix tests: ConnectionKey not MagicMock

Co-authored-by: alpha-nerd <alpha-nerd@users.noreply.bitfreedom.net>

test/test_fetch.py

@@ -73,12 +73,24 @@ class TestFetchAvailableModels:
 
     async def test_returns_empty_on_connection_error(self):
         cfg = _make_cfg(ollama_eps=[MOCK_OLLAMA_EP], llama_eps=[])
+        from aiohttp.connector import ConnectionKey
         import aiohttp
         with patch.object(router, "config", cfg), aioresponses() as m:
+            conn_key = ConnectionKey(
+                host="mock-ollama",
+                port=11434,
+                is_ssl=False,
+                ssl=None,
+                proxy=None,
+                proxy_host=None,
+                proxy_port=None,
+                proxy_auth=None,
+                connector_owner=True,
+            )
             m.get(
                 f"{MOCK_OLLAMA_EP}/api/tags",
                 exception=aiohttp.ClientConnectorError(
-                    connection_key=MagicMock(host="mock-ollama", port=11434),
+                    connection_key=conn_key,
                     os_error=OSError(111, "refused"),
                 ),
             )