def test_show_main_window_without_username(mocker):
w = Window()
w.autosize_window = mocker.MagicMock()
w.show = mocker.MagicMock()
w.set_logged_in_as = mocker.MagicMock()
w.show_main_window()
w.autosize_window.assert_called_once_with()
w.show.assert_called_once_with()
w.set_logged_in_as.called is False
def test_show_main_window(mocker):
w = Window()
w.autosize_window = mocker.MagicMock()
w.show = mocker.MagicMock()
w.set_logged_in_as = mocker.MagicMock()
w.show_main_window(username='******')
w.autosize_window.assert_called_once_with()
w.show.assert_called_once_with()
w.set_logged_in_as.assert_called_once_with('test_username')