Package org.springframework.xd.dirt.integration.bus

Source Code of org.springframework.xd.dirt.integration.bus.LocalMessageBusTests

/*
* Copyright 2013-2014 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.xd.dirt.integration.bus;

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

import java.util.concurrent.atomic.AtomicBoolean;

import org.junit.Test;

import org.springframework.context.support.GenericApplicationContext;
import org.springframework.http.MediaType;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.support.DefaultMessageBuilderFactory;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.integration.support.utils.IntegrationUtils;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHandler;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.MessagingException;

/**
* @author Gary Russell
* @author David Turanski
* @since 1.0
*/
public class LocalMessageBusTests extends AbstractMessageBusTests {

  @Override
  protected MessageBus getMessageBus() throws Exception {
    LocalMessageBus bus = new LocalMessageBus();
    GenericApplicationContext applicationContext = new GenericApplicationContext();
    applicationContext.getBeanFactory().registerSingleton(
        IntegrationUtils.INTEGRATION_MESSAGE_BUILDER_FACTORY_BEAN_NAME,
        new DefaultMessageBuilderFactory());
    applicationContext.refresh();
    bus.setApplicationContext(applicationContext);
    bus.afterPropertiesSet();
    return bus;
  }

  @Test
  public void testPayloadConversionNotNeededExplicitType() throws Exception {
    LocalMessageBus bus = (LocalMessageBus) getMessageBus();
    verifyPayloadConversion(new TestPayload(), bus);
  }

  @Test
  public void testNoPayloadConversionByDefault() throws Exception {
    LocalMessageBus bus = (LocalMessageBus) getMessageBus();
    verifyPayloadConversion(new TestPayload(), bus);
  }


  private void verifyPayloadConversion(final Object expectedValue, final LocalMessageBus bus) {
    DirectChannel myChannel = new DirectChannel();
    bus.bindConsumer("in", myChannel, null);
    DirectChannel input = bus.getBean("in", DirectChannel.class);
    assertNotNull(input);

    final AtomicBoolean msgSent = new AtomicBoolean(false);

    myChannel.subscribe(new MessageHandler() {

      @Override
      public void handleMessage(Message<?> message) throws MessagingException {
        assertEquals(expectedValue, message.getPayload());
        msgSent.set(true);
      }
    });

    Message<TestPayload> msg = MessageBuilder.withPayload(new TestPayload())
        .setHeader(MessageHeaders.CONTENT_TYPE, MediaType.ALL_VALUE).build();

    input.send(msg);
    assertTrue(msgSent.get());
  }

  static class TestPayload {

    @Override
    public String toString() {
      return "foo";
    }

    @Override
    public boolean equals(Object other) {
      return (other instanceof TestPayload && this.toString().equals(other.toString()));
    }

    @Override
    public int hashCode() {
      return this.toString().hashCode();
    }

  }
}
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