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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.qpid.server.queue;
import junit.framework.TestCase;
public class MessageReferenceCountingTest extends TestCase
{
AMQMessage _message;
public void setUp()
{
_message = MessageFactory.getInstance().createMessage(null, false);
}
public void testInitialState()
{
assertTrue("New messages should have a reference", _message.isReferenced());
}
public void testIncrementReference()
{
assertTrue("Message should maintain Referenced state", _message.isReferenced());
assertTrue("Incrementing should be allowed ",_message.incrementReference(1));
assertTrue("Message should maintain Referenced state", _message.isReferenced());
assertTrue("Incrementing should be allowed as much as we need",_message.incrementReference(1));
assertTrue("Message should maintain Referenced state", _message.isReferenced());
assertTrue("Incrementing should be allowed as much as we need",_message.incrementReference(2));
assertTrue("Message should maintain Referenced state", _message.isReferenced());
}
public void testDecrementReference()
{
assertTrue("Message should maintain Referenced state", _message.isReferenced());
try
{
_message.decrementReference(null);
}
catch (MessageCleanupException e)
{
fail("Decrement should be allowed:"+e.getMessage());
}
assertFalse("Message should not be Referenced state", _message.isReferenced());
try
{
_message.decrementReference(null);
fail("Decrement should not be allowed as we should have a ref count of 0");
}
catch (MessageCleanupException e)
{
assertTrue("Incorrect exception thrown.",e.getMessage().contains("has gone below 0"));
}
}
}
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