/*
* Copyright 2002-2008 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.message;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import org.junit.Test;
import org.springframework.messaging.MessageHeaders;
/**
* @author Mark Fisher
*/
public class MessageHeadersTests {
@Test
public void testTimestamp() {
MessageHeaders headers = new MessageHeaders(null);
assertNotNull(headers.getTimestamp());
}
@Test
public void testTimestampOverwritten() throws Exception {
MessageHeaders headers1 = new MessageHeaders(null);
Thread.sleep(50L);
MessageHeaders headers2 = new MessageHeaders(headers1);
assertNotSame(headers1.getTimestamp(), headers2.getTimestamp());
}
@Test
public void testIdOverwritten() throws Exception {
MessageHeaders headers1 = new MessageHeaders(null);
MessageHeaders headers2 = new MessageHeaders(headers1);
assertNotSame(headers1.getId(), headers2.getId());
}
@Test
public void testId() {
MessageHeaders headers = new MessageHeaders(null);
assertNotNull(headers.getId());
}
@Test
public void testNonTypedAccessOfHeaderValue() {
Integer value = new Integer(123);
Map<String, Object> map = new HashMap<String, Object>();
map.put("test", value);
MessageHeaders headers = new MessageHeaders(map);
assertEquals(value, headers.get("test"));
}
@Test
public void testTypedAccessOfHeaderValue() {
Integer value = new Integer(123);
Map<String, Object> map = new HashMap<String, Object>();
map.put("test", value);
MessageHeaders headers = new MessageHeaders(map);
assertEquals(value, headers.get("test", Integer.class));
}
@Test(expected = IllegalArgumentException.class)
public void testHeaderValueAccessWithIncorrectType() {
Integer value = new Integer(123);
Map<String, Object> map = new HashMap<String, Object>();
map.put("test", value);
MessageHeaders headers = new MessageHeaders(map);
assertEquals(value, headers.get("test", String.class));
}
@Test
public void testNullHeaderValue() {
Map<String, Object> map = new HashMap<String, Object>();
MessageHeaders headers = new MessageHeaders(map);
assertNull(headers.get("nosuchattribute"));
}
@Test
public void testNullHeaderValueWithTypedAccess() {
Map<String, Object> map = new HashMap<String, Object>();
MessageHeaders headers = new MessageHeaders(map);
assertNull(headers.get("nosuchattribute", String.class));
}
@Test
public void testHeaderKeys() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("key1", "val1");
map.put("key2", new Integer(123));
MessageHeaders headers = new MessageHeaders(map);
Set<String> keys = headers.keySet();
assertTrue(keys.contains("key1"));
assertTrue(keys.contains("key2"));
}
@Test
public void serializeWithAllSerializableHeaders() throws Exception {
Map<String, Object> map = new HashMap<String, Object>();
map.put("name", "joe");
map.put("age", 42);
MessageHeaders input = new MessageHeaders(map);
MessageHeaders output = (MessageHeaders) serializeAndDeserialize(input);
assertEquals("joe", output.get("name"));
assertEquals(42, output.get("age"));
}
@Test
public void serializeWithNonSerializableHeader() throws Exception {
Object address = new Object();
Map<String, Object> map = new HashMap<String, Object>();
map.put("name", "joe");
map.put("address", address);
MessageHeaders input = new MessageHeaders(map);
MessageHeaders output = (MessageHeaders) serializeAndDeserialize(input);
assertEquals("joe", output.get("name"));
assertNull(output.get("address"));
}
private static Object serializeAndDeserialize(Object object) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(baos);
out.writeObject(object);
out.close();
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
ObjectInputStream in = new ObjectInputStream(bais);
Object result = in.readObject();
in.close();
return result;
}
}