import pytest
import sys
import os
from unittest.mock import MagicMock, patch

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

import mcp_client

def test_mcp_perf_tool_retrieval():
    # Test that the MCP tool can call performance_monitor metrics
    mock_metrics = {"fps": 60, "last_frame_time_ms": 16.6}
    
    # Simulate tool call by patching the callback
    with patch('mcp_client.perf_monitor_callback', return_value=mock_metrics):
        result = mcp_client.get_ui_performance()
        assert "60" in result
        assert "16.6" in result
