code: public static void assertXpathValuesEqual(String controlXpath,
                                                String testXpath,
                                                String inXMLString)
          throws SAXException, IOException,
                 XpathException {
          assertXpathValuesEqual(controlXpath, testXpath,
                                 XMLUnit.buildControlDocument(inXMLString));
      }
docs: Assert that the evaluation of two Xpaths in the same XML string are
  equal
  @param controlXpath
  @param testXpath
  @param inXMLString
  @throws SAXException
  @throws IOException