/* * Copyright 2002-2011 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.samples.testing.aggregator; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertNotNull; import static org.junit.Assert.assertNull; import static org.junit.Assert.assertThat; import static org.springframework.integration.test.matcher.PayloadMatcher.hasPayload; import java.util.List; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.messaging.Message; import org.springframework.messaging.MessageChannel; import org.springframework.integration.channel.QueueChannel; import org.springframework.integration.samples.testing.splitter.CommaDelimitedSplitter; import org.springframework.integration.support.MessageBuilder; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; /** * * Shows how to test a custom aggregator. Unit test for the class and * tests for the integration subflow. * The subflow has direct input and output channels. The flow would * be a fragment of a larger flow. Since the output channel is direct, * it has no subscribers outside the context of a larger flow. So, * in this test case, we bridge it to a {@link QueueChannel} to * facilitate easy testing. * * @author Gary Russell * @since 2.0.2 * */ @ContextConfiguration // default context name is <ClassName>-context.xml @RunWith(SpringJUnit4ClassRunner.class) public class CommaDelimitedAggregatorTests { @Autowired MessageChannel inputChannel; @Autowired QueueChannel testChannel; @Test public void unitTestClass3() { List<String> splits = new CommaDelimitedSplitter().split(" a , b, c "); String out = new CommaDelimitedAggregator().aggregate(splits); assertEquals("a,b,c", out); } @Test public void unitTestClass2() { List<String> splits = new CommaDelimitedSplitter().split(" a ,, c "); String out = new CommaDelimitedAggregator().aggregate(splits); assertEquals("a,c", out); } @Test public void unitTestClass0() { List<String> splits = new CommaDelimitedSplitter().split(",,, ,, ,, ,,"); String out = new CommaDelimitedAggregator().aggregate(splits); assertNull(out); } @Test public void testOne() { inputChannel.send(MessageBuilder.withPayload(" a ").build()); Message<?> outMessage = testChannel.receive(0); assertNotNull(outMessage); assertThat(outMessage, hasPayload("A")); outMessage = testChannel.receive(0); assertNull("Only one message expected", outMessage); } @Test public void testTwo() { inputChannel.send(MessageBuilder.withPayload(" a ,z ").build()); Message<?> outMessage = testChannel.receive(0); assertNotNull(outMessage); assertThat(outMessage, hasPayload("A,Z")); outMessage = testChannel.receive(0); assertNull("Only one message expected", outMessage); } @Test public void testSkipEmpty() { inputChannel.send(MessageBuilder.withPayload(" a ,,z ").build()); Message<?> outMessage = testChannel.receive(0); assertNotNull(outMessage); assertThat(outMessage, hasPayload("A,Z")); outMessage = testChannel.receive(0); assertNull("Only one message expected", outMessage); } @Test public void testNone() { inputChannel.send(MessageBuilder.withPayload(" ,, ,,, ,,,,, ,,,,,,, ").build()); Message<?> outMessage = testChannel.receive(0); assertNull("No messages expected", outMessage); } @Test public void testEmpty() { inputChannel.send(MessageBuilder.withPayload("").build()); Message<?> outMessage = testChannel.receive(0); assertNull("No messages expected", outMessage); } }