code: /** 
   * Verify response in  {@link File}
   * @throws Exception
   */
  @Test public void receiveFile() throws Exception {
    handler=new RequestHandler(){
      @Override public void handle(    Request request,    HttpServletResponse response){
        response.setStatus(HTTP_OK);
        try {
          response.getWriter().print("content");
        }
   catch (      IOException e) {
          fail();
        }
      }
    }
  ;
    File output=File.createTempFile("output",".txt");
    assertTrue(post(url).receive(output).ok());
    StringBuilder buffer=new StringBuilder();
    BufferedReader reader=new BufferedReader(new FileReader(output));
    int read;
    while ((read=reader.read()) != -1)   buffer.append((char)read);
    reader.close();
    assertEquals("content",buffer.toString());
  }
  