1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with 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,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.handler.chain;
21
22 import junit.framework.Assert;
23 import junit.framework.TestCase;
24
25 import org.apache.mina.core.session.DummySession;
26 import org.apache.mina.core.session.IoSession;
27
28 /**
29 * A test case for {@link ChainedIoHandler}.
30 *
31 * @author The Apache MINA Project (dev@mina.apache.org)
32 * @version $Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (jeu, 26 jun 2008) $
33 */
34 public class ChainedIoHandlerTest extends TestCase {
35 public static void main(String[] args) {
36 junit.textui.TestRunner.run(ChainedIoHandlerTest.class);
37 }
38
39 public void testChainedCommand() throws Exception {
40 IoHandlerChain chain = new IoHandlerChain();
41 StringBuffer buf = new StringBuffer();
42 chain.addLast("A", new TestCommand(buf, 'A'));
43 chain.addLast("B", new TestCommand(buf, 'B'));
44 chain.addLast("C", new TestCommand(buf, 'C'));
45
46 new ChainedIoHandler(chain).messageReceived(new DummySession(), null);
47
48 Assert.assertEquals("ABC", buf.toString());
49 }
50
51 private class TestCommand implements IoHandlerCommand {
52 private final StringBuffer buf;
53
54 private final char ch;
55
56 private TestCommand(StringBuffer buf, char ch) {
57 this.buf = buf;
58 this.ch = ch;
59 }
60
61 public void execute(NextCommand next, IoSession session, Object message)
62 throws Exception {
63 buf.append(ch);
64 next.execute(session, message);
65 }
66 }
67 }