def test_inform_if_paths_invalid_selectively_informs(mock_inform):
    """
    We should only inform the user if the values are truthy.
    """
    config.inform_if_paths_invalid(None, None, None)

    assert mock_inform.call_count == 0

    egrc_path = 'egrc'
    ex_dir = 'ex dir'
    cu_dir = 'custom'

    config.inform_if_paths_invalid(egrc_path, ex_dir, cu_dir)

    assert mock_inform.call_count == 3
    mock_inform.assert_any_call(egrc_path)
    mock_inform.assert_any_call(ex_dir)
    mock_inform.assert_any_call(cu_dir)

    We should only inform the user if the values are truthy.
    
test/config_test.py