From c5cfe284cb10147ffd95e56afabb22b090f486cb Mon Sep 17 00:00:00 2001 From: Tin Chi Lo Date: Thu, 16 Jul 2026 16:33:54 -0700 Subject: [PATCH] test(mcp): pin single toolset DB fetch across permission checks via shared cache --- .../mcp_server/test_mcp_server_manager.py | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/tests/test_litellm/proxy/_experimental/mcp_server/test_mcp_server_manager.py b/tests/test_litellm/proxy/_experimental/mcp_server/test_mcp_server_manager.py index 80bf08a5eba..f75db09144f 100644 --- a/tests/test_litellm/proxy/_experimental/mcp_server/test_mcp_server_manager.py +++ b/tests/test_litellm/proxy/_experimental/mcp_server/test_mcp_server_manager.py @@ -8496,3 +8496,34 @@ def test_build_mcp_server_table_carries_null_oauth2_flow(): table = manager._build_mcp_server_table(server) assert table.oauth2_flow is None + + +@pytest.mark.asyncio +async def test_resolve_toolset_tool_permissions_single_db_fetch_across_checks(): + """The server-level and tool-level permission primitives each resolve the + key's toolsets during one request; the shared cache must dedupe the DB + fetch so the request costs a single toolset query however many checks run""" + from litellm.caching.caching import DualCache + from litellm.proxy._experimental.mcp_server.mcp_server_manager import ( + MCPServerManager, + ) + + manager = MCPServerManager() + toolset = MagicMock() + toolset.tools = [{"server_id": "server-a", "tool_name": "lookup_status"}] + list_toolsets_mock = AsyncMock(return_value=[toolset]) + + with ( + patch( + "litellm.proxy._experimental.mcp_server.toolset_db.list_mcp_toolsets", + list_toolsets_mock, + ), + patch("litellm.proxy.proxy_server.prisma_client", MagicMock()), + patch("litellm.proxy.proxy_server.user_api_key_cache", DualCache()), + ): + first = await manager.resolve_toolset_tool_permissions(toolset_ids=["ts-1"]) + second = await manager.resolve_toolset_tool_permissions(toolset_ids=["ts-1"]) + + assert first == {"server-a": ["lookup_status"]} + assert second == first + list_toolsets_mock.assert_awaited_once()