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lda-wf/tests/wf_mcp/test_workflow_wrappers.py
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Python

from __future__ import annotations
import asyncio
from typing import Any, cast
from wf_authoring import build_async_registry
from wf_core import RuntimeContext
from wf_mcp.capabilities import DiscoveredTool
from wf_mcp.models import AuthRecord, ConnectionConfig
from wf_mcp.runtime import ToolExecutor
from wf_mcp.sdk import ToolCallResult
from wf_mcp.workflow import wrap_discovered_tool
class RecordingAdapter:
"""Tiny adapter fake that records exactly what MCP payload would be sent."""
def __init__(self) -> None:
self.payloads: list[dict[str, Any]] = []
async def call_tool(
self,
connection: ConnectionConfig,
auth: AuthRecord | None,
tool_name: str,
payload: dict[str, Any],
) -> ToolCallResult:
self.payloads.append(payload)
return ToolCallResult(outcome="ok", output={})
def test_discovered_tool_wrapper_omits_unset_optional_arguments() -> None:
adapter = RecordingAdapter()
spec = wrap_discovered_tool(
connection=ConnectionConfig(
id="playwright.default",
server="playwright",
account="default",
),
auth=None,
executor=cast(ToolExecutor, adapter),
tool=DiscoveredTool(
name="browser_snapshot",
title=None,
description=None,
input_schema={
"type": "object",
"properties": {
"target": {"type": "string"},
"depth": {"type": "integer"},
},
},
output_schema={"type": "object", "properties": {}},
),
)
handler = build_async_registry(spec)[spec.name]
async def run_calls() -> None:
await handler({}, RuntimeContext(current_node_id="snapshot"))
await handler(
{"target": "main"},
RuntimeContext(current_node_id="snapshot"),
)
asyncio.run(run_calls())
assert adapter.payloads[0] == {}
assert adapter.payloads[1] == {"target": "main"}