    @Test
    public void testPrettyPrint()
    {

        String xml = "<a><b>c</b></a>";

        System.out.println( prettyPrint( xml ) );

        long start = System.currentTimeMillis();
        char[] padding = new char[4];
        Arrays.fill( padding, ' ' );
        assertEquals( "<a>" + LINE_SEPARATOR + String.copyValueOf( padding ) + "<b>c</b>" + LINE_SEPARATOR + "</a>"
            + LINE_SEPARATOR, prettyPrint( xml ) );

        System.out.println( "time spent " + ( System.currentTimeMillis() - start ) );
    }