def test_mixin_also_reads_custom_configuration():
    mixin = storage.DietMixin()
    assert (mixin.config['commands']['optipng'] == 'optipng')
    assert (mixin.config['commands']['fake'] == 'fakecmd')
    assert (mixin.config['notreal'] == 'not a real value')
def test_mixin_also_reads_custom_configuration():
    mixin = storage.DietMixin()
    assert (mixin.config['commands']['optipng'] == 'optipng')
    assert (mixin.config['commands']['fake'] == 'fakecmd')
    assert (mixin.config['notreal'] == 'not a real value')