@Test(expected = InvalidSyntaxException.class)
public void testChooseAtRoot() throws Exception {

	String sample = "./src/test/resources/choose-at-root.xml";
    GauloisPipe piper = new GauloisPipe(configFactory);
    ConfigUtil cu = new ConfigUtil(configFactory.getConfiguration(), piper.getUriResolver(), sample);
    Config config = cu.buildConfig(emptyInputParams);
    config.verify();
}