code: /** 
   * Verify progress callback when sending from a byte array
   * @throws Exception
   */
  @Test public void uploadProgressSendByteArray() throws Exception {
    final AtomicReference<String> body=new AtomicReference<String>();
    handler=new RequestHandler(){
      @Override public void handle(    Request request,    HttpServletResponse response){
        body.set(new String(read()));
        response.setStatus(HTTP_OK);
      }
    }
  ;
    final byte[] bytes="hello".getBytes(CHARSET_UTF8);
    final AtomicLong tx=new AtomicLong(0);
    UploadProgress progress=new UploadProgress(){
      public void onUpload(    long transferred,    long total){
        assertEquals(bytes.length,total);
        assertEquals(tx.incrementAndGet(),transferred);
      }
    }
  ;
    post(url).bufferSize(1).progress(progress).send(bytes).code();
    assertEquals(bytes.length,tx.get());
  }
  