@Test
public void testGetRootNamespace() throws SAXException, TransformerException, IOException, ConfigurationException {

	String lineSeparator=System.getProperty("line.separator");
	testGetRootNamespace("<root><a>a</a><b></b><c/></root>","");
	testGetRootNamespace("<root xmlns=\"xyz\"><a>a</a><b></b><c/></root>","xyz");
	testGetRootNamespace("<root xmlns:xx=\"xyz\"><a xmlns=\"xyz\">a</a><b></b><c/></root>","");
	testGetRootNamespace("<xx:root xmlns:xx=\"xyz\"><a xmlns=\"xyz\">a</a><b></b><c/></xx:root>","xyz");
}