import pytest
import sys
import os
from unittest.mock import patch
from typing import Generator, Any
from gui_2 import App
import ai_client

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

def test_gui_updates_on_event(app_instance: App) -> None:
 mock_stats = {"percentage": 50.0, "current": 500, "limit": 1000}
 app_instance.last_md = "mock_md"
 with patch.object(app_instance, '_refresh_api_metrics') as mock_refresh:
  # Simulate event (bypassing events.emit since _init_ai_and_hooks is mocked)
  app_instance._on_api_event(payload={"text": "test"})
  # Process tasks manually
  app_instance._process_pending_gui_tasks()
  # Verify that _refresh_api_metrics was called
  mock_refresh.assert_called_once_with({"text": "test"}, md_content="mock_md")