public static  void main(String[] args) 
{
        TestRunner.run(GetXMLEncodingTest.class);
}

 public  void testXMLEncodingFromString() throws Exception 
{
        String xmlEnc = "< ?xml version=\"1.0\" encoding=\"UTF-8\"? >\n< root/ >";
        SAXReader reader = new SAXReader();
        InputSource source = new InputSource(new ByteArrayInputStream(xmlEnc
                .getBytes("UTF-8")));
        Document doc = reader.read(source);
        assertEquals("UTF-8", doc.getXMLEncoding());
        doc = reader.read(new StringReader(xmlEnc));
        assertNull(doc.getXMLEncoding());
}

 public  void testXMLEncodingFromStringWithHelper() throws Exception 
{
        String xmlEnc = "< ?xml version=\"1.0\" encoding=\"UTF-8\"? >\n< root/ >";
        String xmlNoEnc = "< root/ >";
        Document doc = DocumentHelper.parseText(xmlEnc);
        assertEquals("UTF-8", doc.getXMLEncoding());
        doc = DocumentHelper.parseText(xmlNoEnc);
        assertNull(doc.getXMLEncoding());
}

 public  void testXMLEncodingFromURL() throws Exception 
{
        Document doc = getDocument("/xml/test/encode.xml");
        assertEquals("UTF-8", doc.getXMLEncoding());
        doc = getDocument("/xml/russArticle.xml");
        assertEquals("koi8-r", doc.getXMLEncoding());
}