import sys
import os
from unittest.mock import patch

# Ensure project root is in path
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "src")))

from src import mcp_client

def test_mcp_perf_tool_retrieval() -> None:
 mock_metrics = {"fps": 60, "last_frame_time_ms": 16.6}
 # Simulate tool call by patching the callback
 with patch('src.mcp_client.perf_monitor_callback', return_value=mock_metrics):
  result = mcp_client.get_ui_performance()
  assert "60" in result
  assert "16.6" in result
