@Test
 public void testWriteInfoNullWriter() {
   String s;
   StringWriter writer = new StringWriter();
   try {
     sLogger.writeInfo(null, ioSet);
     s = writer.getBuffer().toString();
   } catch (IOException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
   }
 }
 @Test(expected = NullPointerException.class)
 public void testWriteInfoNullInfo() {
   String s;
   StringWriter writer = new StringWriter();
   try {
     sLogger.writeInfo(writer, null);
     s = writer.getBuffer().toString();
   } catch (IOException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
   }
 }