public void shouldAddField() throws Exception {
Message message = new Message()
.setProperty("to", "test-to")
.setProperty("from", "test-from");
UpdateAction updateAction = new UpdateAction();
updateAction.setField("new");
updateAction.setValue("test-new");
updateAction.execute(message);
Assert.assertEquals(message.getProperties().size(), 3);
Assert.assertEquals(message.getProperty("new", String.class), "test-new");
Assert.assertEquals(message.getProperty("to", String.class), "test-to");
Assert.assertEquals(message.getProperty("from", String.class), "test-from");