def METHOD_NAME(self):
    showcase_dict = generate_test_showcase(SYSADMIN, 'normal_showcase', False)
    showcase_dict['notes'] = 'Modified'
    assert 'dataviz_label' not in showcase_dict
    context = {'model': model, 'session': model.Session, 'user': SYSADMIN}
    modified_dict = _get_action('ckanext_showcase_update')(context, showcase_dict)
    assert modified_dict['notes'] == 'Modified', 'A sysadmin should be able to update a normal showcase'