pytest.mark.asyncioasyncdeftest_multi_server_client():withpatch('langchain_mcp_adapters.client.MultiServerMCPClient')asmock_client
importpytestfromunittest.mockimportAsyncMock,patch@pytest.mark.asyncioasyncdeftest_call_tool():asyncwithpatch('mcp.client.stdio.stdio_client')asmock_client