JobForwardingJMSListenerTest.java

/**
 * Copyright 2008 The University of North Carolina at Chapel Hill
 *
 * 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 edu.unc.lib.dl.fedora;

import static org.mockito.Matchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.mockito.MockitoAnnotations.initMocks;

import java.io.InputStream;

import javax.jms.Message;
import javax.jms.TextMessage;

import org.apache.commons.io.IOUtils;
import org.jdom2.Document;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;

/**
 * @author bbpennel
 * @date Mar 18, 2014
 */
public class JobForwardingJMSListenerTest {

	@Mock
	private TextMessage msg;
	@Mock
	private ListenerJob job1;
	@Mock
	private ListenerJob job2;

	private JobForwardingJMSListener listener;

	@Before
	public void setup() throws Exception {
		initMocks(this);

		listener = new JobForwardingJMSListener();

		InputStream inStream = this.getClass().getResourceAsStream("/ingestMessage.xml");
		String messageBody = IOUtils.toString(inStream);

		when(msg.getText()).thenReturn(messageBody);

	}

	@Test
	public void testOnMessageNoListeners() throws Exception {

		listener.onMessage(msg);

		verify(msg, never()).getText();

	}

	@Test
	public void testOnMessage() throws Exception {

		listener.registerListener(job1);
		listener.registerListener(job2);

		listener.onMessage(msg);

		verify(msg).getText();

		verify(job1).onEvent(any(Document.class));
		verify(job2).onEvent(any(Document.class));

	}

	@Test
	public void testOnMessageUnregister() throws Exception {

		listener.registerListener(job1);
		listener.unregisterListener(job1);

		listener.onMessage(msg);

		verify(msg, never()).getText();

		verify(job1, never()).onEvent(any(Document.class));

	}

	@Test
	public void testOnMessageUnregisterMultipleMessages() throws Exception {

		listener.registerListener(job1);
		listener.registerListener(job2);

		listener.onMessage(msg);

		listener.unregisterListener(job1);

		listener.onMessage(msg);

		verify(msg, times(2)).getText();

		verify(job1).onEvent(any(Document.class));
		verify(job2, times(2)).onEvent(any(Document.class));

	}

	@Test(expected = IllegalArgumentException.class)
	public void testOnMessageNotText() throws Exception {

		listener.registerListener(job1);

		Message badMessage = mock(Message.class);

		try {
			listener.onMessage(badMessage);
		} finally {
			verify(job1, never()).onEvent(any(Document.class));
		}

	}
}