from unittest.mock import patch

import pytest

import app


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


def test_correct_args_passed_to_update():
    with patch("sys.argv", ["app.py", "UCD9aayaoRKSzV8QtUvq8ehw", "1"]):
        with patch("app.update_cms_account_for_channel") as mock_update:
            app.main()
            mock_update.assert_called_once_with("UCD9aayaoRKSzV8QtUvq8ehw", 1)