How to use the todoman.configuration.load_config function in todoman

def test_colour_validation_always(config):
    config.write("color = 'always'\n", 'a')
    with patch(
        'todoman.configuration.find_config',
        return_value=(str(config)),
    ):
        cfg = load_config()

    assert cfg['main']['color'] == 'always'

def test_colour_validation_auto(config):
    with patch(
        'todoman.configuration.find_config',
        return_value=(str(config)),
    ):
        cfg = load_config()

    assert cfg['main']['color'] == 'auto'

def test_colour_validation_invalid(config):
    config.write("color = 'on_weekends_only'\n", 'a')
    with patch(
        'todoman.configuration.find_config',
        return_value=(str(config)),
    ), pytest.raises(ConfigurationException):
        load_config()

def init_config(self):
        try:
            self.config = load_config()
        except ConfigurationException as e:
            raise click.ClickException(e.args[0])