SpelSplitterIntegrationTests.java example

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spring-integration-master
/*
 * Copyright 2002-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.integration.splitter;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.integration.IntegrationMessageHeaderAccessor;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.PollableChannel;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * @author Mark Fisher
 * @author Artem Bilan
 * @author Gary Russell
 */
@ContextConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
public class SpelSplitterIntegrationTests {

	@Autowired
	private MessageChannel simpleInput;

	@Autowired
	private MessageChannel dups;

	@Autowired
	private MessageChannel beanResolvingInput;

	@Autowired
	private MessageChannel iteratorInput;

	@Autowired
	private MessageChannel spelIteratorInput;

	@Autowired
	private PollableChannel output;

	@Test
	public void dups() {
		Message<?> message = MessageBuilder.withPayload("one one").build();
		this.dups.send(message);
		Message<?> one = output.receive(0);
		Message<?> two = output.receive(0);
		assertNotNull(one);
		assertNotNull(two);
		assertEquals("one", one.getPayload());
		assertEquals("one", two.getPayload());
	}

	@Test
	public void simple() {
		Message<?> message = MessageBuilder.withPayload(new TestBean()).setHeader("foo", "foo").build();
		this.simpleInput.send(message);
		Message<?> one = output.receive(0);
		Message<?> two = output.receive(0);
		Message<?> three = output.receive(0);
		Message<?> four = output.receive(0);
		assertEquals(new Integer(1), one.getPayload());
		assertEquals("foo", one.getHeaders().get("foo"));
		assertEquals(new Integer(2), two.getPayload());
		assertEquals("foo", two.getHeaders().get("foo"));
		assertEquals(new Integer(3), three.getPayload());
		assertEquals("foo", three.getHeaders().get("foo"));
		assertEquals(new Integer(4), four.getPayload());
		assertEquals("foo", four.getHeaders().get("foo"));
		assertNull(output.receive(0));
	}

	@Test
	public void beanResolving() {
		Message<?> message = MessageBuilder.withPayload("a,b,c,d").build();
		this.beanResolvingInput.send(message);
		Message<?> a = output.receive(0);
		Message<?> b = output.receive(0);
		Message<?> c = output.receive(0);
		Message<?> d = output.receive(0);
		assertEquals("a", a.getPayload());
		assertEquals("b", b.getPayload());
		assertEquals("c", c.getPayload());
		assertEquals("d", d.getPayload());
		assertNull(output.receive(0));
	}

	@Test
	public void iteratorSplitter() {
		this.iteratorInput.send(new GenericMessage<String>("a,b,c,d"));
		Message<?> a = output.receive(0);
		Message<?> b = output.receive(0);
		Message<?> c = output.receive(0);
		Message<?> d = output.receive(0);
		assertEquals("a", a.getPayload());
		assertEquals(new Integer(1), new IntegrationMessageHeaderAccessor(a).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(a).getSequenceSize());
		assertEquals("b", b.getPayload());
		assertEquals(new Integer(2), new IntegrationMessageHeaderAccessor(b).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(b).getSequenceSize());
		assertEquals("c", c.getPayload());
		assertEquals(new Integer(3), new IntegrationMessageHeaderAccessor(c).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(c).getSequenceSize());
		assertEquals("d", d.getPayload());
		assertEquals(new Integer(4), new IntegrationMessageHeaderAccessor(d).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(d).getSequenceSize());
		assertNull(output.receive(0));
	}

	@Test
	public void spelIteratorSplitter() {
		this.spelIteratorInput.send(new GenericMessage<String>("a,b,c,d"));
		Message<?> a = output.receive(0);
		Message<?> b = output.receive(0);
		Message<?> c = output.receive(0);
		Message<?> d = output.receive(0);
		assertEquals("a", a.getPayload());
		assertEquals(new Integer(1), new IntegrationMessageHeaderAccessor(a).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(a).getSequenceSize());
		assertEquals("b", b.getPayload());
		assertEquals(new Integer(2), new IntegrationMessageHeaderAccessor(b).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(b).getSequenceSize());
		assertEquals("c", c.getPayload());
		assertEquals(new Integer(3), new IntegrationMessageHeaderAccessor(c).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(c).getSequenceSize());
		assertEquals("d", d.getPayload());
		assertEquals(new Integer(4), new IntegrationMessageHeaderAccessor(d).getSequenceNumber());
		assertEquals(new Integer(0), new IntegrationMessageHeaderAccessor(d).getSequenceSize());
		assertNull(output.receive(0));
	}


	static class TestBean {

		private final List<Integer> numbers = new ArrayList<Integer>();

		TestBean() {
			for (int i = 1; i <= 10; i++) {
				this.numbers.add(i);
			}
		}

		public List<Integer> getNumbers() {
			return this.numbers;
		}

		public String[] split(String s) {
			return s.split(",");
		}

		public Iterator<String> splitIterator(String s) {
			return Arrays.asList(s.split(",")).iterator();
		}
	}

}