from unittest.mock import patch

import pytest

import app


def test_missing_youtube_video_id_argument():
    with patch("sys.argv", ["app.py"]):
        with pytest.raises(SystemExit):
            app.main()


def test_correct_args_passed_to_clear_bacon_history():
    with patch("sys.argv", ["app.py", "--ids", "BQPxgsLX2PM,Gx_8z-IufPg"]):
        with patch("app.clear_bacon_history") as mock_clear:
            app.main()
            mock_clear.assert_called_once_with(["BQPxgsLX2PM", "Gx_8z-IufPg"])


def test_ids_starting_with_dash_are_accepted():
    with patch("sys.argv", ["app.py", "--ids", "-abc123,-def456"]):
        with patch("app.clear_bacon_history") as mock_clear:
            app.main()
            mock_clear.assert_called_once_with(["-abc123", "-def456"])