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Java > Open Source Codes > org > apache > activemq > memory > buffer > SizeBasedMessageBufferTest


1 /**
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one or more
4  * contributor license agreements. See the NOTICE file distributed with
5  * this work for additional information regarding copyright ownership.
6  * The ASF licenses this file to You under the Apache License, Version 2.0
7  * (the "License"); you may not use this file except in compliance with
8  * the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */

18 package org.apache.activemq.memory.buffer;
19
20 import org.apache.activemq.memory.buffer.MessageBuffer;
21 import org.apache.activemq.memory.buffer.SizeBasedMessageBuffer;
22
23 /**
24  *
25  * @version $Revision: 1.1 $
26  */

27 public class SizeBasedMessageBufferTest extends MemoryBufferTestSupport {
28
29     public void testSizeWorks() throws Exception JavaDoc {
30         qA.add(createMessage(10));
31         qB.add(createMessage(10));
32         qB.add(createMessage(10));
33         qC.add(createMessage(10));
34         
35         dump();
36         
37         assertEquals("buffer size", 40, buffer.getSize());
38         assertEquals("qA", 10, qA.getSize());
39         assertEquals("qB", 20, qB.getSize());
40         assertEquals("qC", 10, qC.getSize());
41         
42         // now lets force an eviction
43
qC.add(createMessage(10));
44
45         dump();
46         
47         assertEquals("buffer size", 40, buffer.getSize());
48         assertEquals("qA", 10, qA.getSize());
49         assertEquals("qB", 10, qB.getSize());
50         assertEquals("qC", 20, qC.getSize());
51     }
52
53     
54     protected MessageBuffer createMessageBuffer() {
55         return new SizeBasedMessageBuffer(40);
56     }
57 }
58
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