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

    String configFilename = "src/test/resources/config/unmatchedPrefixDatatype.xml";
    GauloisPipe piper = new GauloisPipe(configFactory);
    ConfigUtil cu = new ConfigUtil(configFactory.getConfiguration(), piper.getUriResolver(), configFilename);
    cu.buildConfig(emptyInputParams);
    fail("This config file must throw an Exception and it doesn't : "+configFilename);
}