/**
  * Object payload contained in Exchange In case of a single file Exchange Header is populated with
  * the name of the remote path downloaded In case of a multiple files Exchange Header is populated
  * with the name of the remote paths downloaded In case of a single file Exchange Body is
  * populated with the ByteArrayOutputStream downloaded from dropbox. In case of multiple files
  * Exchange Body is populated with a map containing as key the remote path and as value the linked
  * ByteArrayOutputStream
  *
  * @param exchange
  */
 @Override
 public void populateExchange(Exchange exchange) {
   // in case we have only one baos put it directly in body
   Map<String, ByteArrayOutputStream> map = (Map<String, ByteArrayOutputStream>) resultEntries;
   if (map.size() == 1) {
     // set info in exchange
     String pathExtracted = null;
     ByteArrayOutputStream baosExtracted = null;
     for (Map.Entry<String, ByteArrayOutputStream> entry : map.entrySet()) {
       pathExtracted = entry.getKey();
       baosExtracted = entry.getValue();
     }
     exchange.getIn().setHeader(DropboxResultHeader.DOWNLOADED_FILE.name(), pathExtracted);
     exchange.getIn().setBody(baosExtracted);
   } else {
     StringBuffer pathsExtracted = new StringBuffer();
     for (Map.Entry<String, ByteArrayOutputStream> entry : map.entrySet()) {
       pathsExtracted.append(entry.getKey() + "\n");
     }
     exchange
         .getIn()
         .setHeader(DropboxResultHeader.DOWNLOADED_FILES.name(), pathsExtracted.toString());
     exchange.getIn().setBody(map);
   }
 }
  @Test
  public void testCamelDropbox() throws Exception {
    template.send(
        "direct:start",
        new Processor() {
          @Override
          public void process(Exchange exchange) throws Exception {
            exchange.getIn().setHeader("test", "test");
          }
        });

    MockEndpoint mock = getMockEndpoint("mock:result");
    mock.expectedMinimumMessageCount(1);
    assertMockEndpointsSatisfied();

    List<Exchange> exchanges = mock.getReceivedExchanges();
    Exchange exchange = exchanges.get(0);
    Object header = exchange.getIn().getHeader(DropboxResultHeader.DOWNLOADED_FILE.name());
    Object body = exchange.getIn().getBody();
    assertNotNull(header);
    assertNotNull(body);
  }