@Test
public void splitMessageWithEmptyCollectionPayload() throws Exception {
Message<List<String>> message =
MessageBuilder.withPayload(Collections.<String>emptyList()).build();
QueueChannel replyChannel = new QueueChannel();
DefaultMessageSplitter splitter = new DefaultMessageSplitter();
splitter.setOutputChannel(replyChannel);
splitter.handleMessage(message);
Message<?> output = replyChannel.receive(15);
assertThat(output, is(nullValue()));
}
@Test
public void correlationIdCopiedFromMessageId() {
Message<String> message = MessageBuilder.withPayload("test").build();
DirectChannel inputChannel = new DirectChannel();
QueueChannel outputChannel = new QueueChannel(1);
DefaultMessageSplitter splitter = new DefaultMessageSplitter();
splitter.setOutputChannel(outputChannel);
EventDrivenConsumer endpoint = new EventDrivenConsumer(inputChannel, splitter);
endpoint.start();
assertTrue(inputChannel.send(message));
Message<?> reply = outputChannel.receive(0);
assertEquals(message.getHeaders().getId(), reply.getHeaders().getCorrelationId());
}
@Test
public void splitMessageWithCollectionPayload() throws Exception {
List<String> payload = Arrays.asList(new String[] {"x", "y", "z"});
Message<List<String>> message = MessageBuilder.withPayload(payload).build();
QueueChannel replyChannel = new QueueChannel();
DefaultMessageSplitter splitter = new DefaultMessageSplitter();
splitter.setOutputChannel(replyChannel);
splitter.handleMessage(message);
List<Message<?>> replies = replyChannel.clear();
assertEquals(3, replies.size());
Message<?> reply1 = replies.get(0);
assertNotNull(reply1);
assertEquals("x", reply1.getPayload());
Message<?> reply2 = replies.get(1);
assertNotNull(reply2);
assertEquals("y", reply2.getPayload());
Message<?> reply3 = replies.get(2);
assertNotNull(reply3);
assertEquals("z", reply3.getPayload());
}
