exchange.getIn().setBody("Hello World this file will NOT be deleted");
exchange.getIn().setHeader(Exchange.FILE_NAME, "hello.txt");
Producer producer = endpoint.createProducer();
producer.start();
producer.process(exchange);
producer.stop();
// assert file is created
File file = new File(FTP_ROOT_DIR + "/deletefile/hello.txt");
file = file.getAbsoluteFile();
assertTrue("The file should exists", file.exists());