"""Drive `handle_one` directly to assert the raw result-dict shape, then over the wire.""" import mcp_types as types from mcp_types.version import LATEST_MODERN_VERSION from mcp.client import Client from stories._harness import Target, run_client from stories.serve_one.server import build_server, handle_one async def main(target: Target, *, mode: str = "auto") -> None: # ── direct: the namesake recipe — Connection.from_envelope + serve_one → raw result dict. # The entry enters lifespan once and threads it to every per-request handle_one(). server = build_server() params = { "name": "add", "arguments": {"a": 2, "b": 3}, "_meta": { types.PROTOCOL_VERSION_META_KEY: LATEST_MODERN_VERSION, types.CLIENT_INFO_META_KEY: {"name": "serve-one-probe", "version": "0.0.0"}, types.CLIENT_CAPABILITIES_META_KEY: {}, }, } async with server.lifespan(server) as lifespan_state: raw = await handle_one(server, "tools/call", params, lifespan_state=lifespan_state) assert raw["structuredContent"] == {"result": 5}, raw assert raw["content"][0] == {"type": "text", "text": "5"}, raw # ── over the wire: the loop-mode driver behind the connected client. async with Client(target, mode=mode) as client: listed = await client.list_tools() assert [t.name for t in listed.tools] == ["add"] result = await client.call_tool("add", {"a": 2, "b": 3}) assert result.structured_content == {"result": 5}, result if __name__ == "__main__": run_client(main)