import pytest
from unittest.mock import patch, MagicMock
from src.gui_2 import App
from src import ai_client

@pytest.fixture
def app_instance(monkeypatch: pytest.MonkeyPatch) -> type[App]:
 """Fixture to provide the App class with necessary environment variables."""
 monkeypatch.setenv("SLOP_TEST_HOOKS", "1")
 return App

def test_app_subscribes_to_events(app_instance: type[App]) -> None:
 """
    This test checks that the App's __init__ method subscribes the necessary
    event handlers to the ai_client.events emitter.
    """
 with patch.object(ai_client.events, 'on') as mock_on:
  app = app_instance()
  mock_on.assert_called()
  calls = mock_on.call_args_list
  event_names = [call.args[0] for call in calls]
  assert "request_start" in event_names
  assert "response_received" in event_names
  assert "tool_execution" in event_names
  # We don't check for __self__ anymore as they might be lambdas