1 | /* |
2 | * @(#) $Id: CumulativeProtocolDecoderTest.java 264677 2005-08-30 02:44:35Z trustin $ |
3 | * |
4 | * Copyright 2004 The Apache Software Foundation |
5 | * |
6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
7 | * you may not use this file except in compliance with the License. |
8 | * 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 | */ |
19 | package org.apache.mina.protocol.codec; |
20 | |
21 | import java.net.SocketAddress; |
22 | import java.util.ArrayList; |
23 | import java.util.List; |
24 | |
25 | import junit.framework.Assert; |
26 | import junit.framework.TestCase; |
27 | |
28 | import org.apache.mina.common.BaseSession; |
29 | import org.apache.mina.common.ByteBuffer; |
30 | import org.apache.mina.common.SessionConfig; |
31 | import org.apache.mina.common.TransportType; |
32 | import org.apache.mina.protocol.ProtocolDecoder; |
33 | import org.apache.mina.protocol.ProtocolDecoderOutput; |
34 | import org.apache.mina.protocol.ProtocolEncoder; |
35 | import org.apache.mina.protocol.ProtocolHandler; |
36 | import org.apache.mina.protocol.ProtocolFilterChain; |
37 | import org.apache.mina.protocol.ProtocolSession; |
38 | import org.apache.mina.protocol.ProtocolViolationException; |
39 | |
40 | /** |
41 | * Tests {@link CumulativeProtocolDecoder}. |
42 | * |
43 | * @author Trustin Lee (trustin@apache.org) |
44 | * @version $Rev: 264677 $, $Date: 2005-08-30 11:44:35 +0900 $ |
45 | */ |
46 | public class CumulativeProtocolDecoderTest extends TestCase |
47 | { |
48 | private final ProtocolSession session = new ProtocolSessionImpl(); |
49 | private ByteBuffer buf; |
50 | private IntegerDecoder decoder; |
51 | private IntegerDecoderOutput output; |
52 | |
53 | public static void main(String[] args) |
54 | { |
55 | junit.textui.TestRunner.run(CumulativeProtocolDecoderTest.class); |
56 | } |
57 | |
58 | protected void setUp() throws Exception |
59 | { |
60 | buf = ByteBuffer.allocate( 16 ); |
61 | decoder = new IntegerDecoder(); |
62 | output = new IntegerDecoderOutput(); |
63 | } |
64 | |
65 | protected void tearDown() throws Exception |
66 | { |
67 | } |
68 | |
69 | public void testCumulation() throws Exception |
70 | { |
71 | buf.put( (byte) 0 ); |
72 | buf.flip(); |
73 | |
74 | decoder.decode( session, buf, output ); |
75 | Assert.assertEquals( 0, output.getValues().size() ); |
76 | Assert.assertEquals( buf.limit(), buf.position() ); |
77 | |
78 | buf.clear(); |
79 | buf.put( (byte) 0 ); |
80 | buf.put( (byte) 0 ); |
81 | buf.put( (byte) 1 ); |
82 | buf.flip(); |
83 | |
84 | decoder.decode( session, buf, output ); |
85 | Assert.assertEquals( 1, output.getValues().size() ); |
86 | Assert.assertEquals( new Integer( 1 ), output.getValues().get( 0 ) ); |
87 | Assert.assertEquals( buf.limit(), buf.position() ); |
88 | } |
89 | |
90 | public void testRepeatitiveDecode() throws Exception |
91 | { |
92 | for( int i = 0; i < 4; i ++ ) |
93 | { |
94 | buf.putInt( i ); |
95 | } |
96 | buf.flip(); |
97 | |
98 | decoder.decode( session, buf, output ); |
99 | Assert.assertEquals( 4, output.getValues().size() ); |
100 | Assert.assertEquals( buf.limit(), buf.position() ); |
101 | |
102 | List expected = new ArrayList(); |
103 | for( int i = 0; i < 4; i ++ ) |
104 | { |
105 | expected.add( new Integer( i ) ); |
106 | } |
107 | Assert.assertEquals( expected, output.getValues() ); |
108 | |
109 | } |
110 | |
111 | public void testWrongImplementationDetection() throws Exception { |
112 | try |
113 | { |
114 | new WrongDecoder().decode( session, buf, output ); |
115 | Assert.fail(); |
116 | } |
117 | catch( IllegalStateException e ) |
118 | { |
119 | // OK |
120 | } |
121 | } |
122 | |
123 | private static class IntegerDecoder extends CumulativeProtocolDecoder |
124 | { |
125 | protected IntegerDecoder() |
126 | { |
127 | super( 4 ); |
128 | } |
129 | |
130 | protected boolean doDecode( ProtocolSession session, ByteBuffer in, |
131 | ProtocolDecoderOutput out ) throws ProtocolViolationException |
132 | { |
133 | Assert.assertTrue( in.hasRemaining() ); |
134 | if( in.remaining() < 4 ) |
135 | return false; |
136 | |
137 | out.write( new Integer( in.getInt() ) ); |
138 | return true; |
139 | } |
140 | |
141 | } |
142 | |
143 | private static class IntegerDecoderOutput implements ProtocolDecoderOutput |
144 | { |
145 | private List values = new ArrayList(); |
146 | |
147 | public void write( Object message ) |
148 | { |
149 | values.add( message ); |
150 | } |
151 | |
152 | public List getValues() |
153 | { |
154 | return values; |
155 | } |
156 | |
157 | public void clear() |
158 | { |
159 | values.clear(); |
160 | } |
161 | } |
162 | |
163 | private static class WrongDecoder extends CumulativeProtocolDecoder |
164 | { |
165 | public WrongDecoder() |
166 | { |
167 | super( 4 ); |
168 | } |
169 | |
170 | protected boolean doDecode( ProtocolSession session, ByteBuffer in, |
171 | ProtocolDecoderOutput out ) throws ProtocolViolationException { |
172 | return true; |
173 | } |
174 | } |
175 | |
176 | private static class ProtocolSessionImpl extends BaseSession implements ProtocolSession |
177 | { |
178 | |
179 | public ProtocolHandler getHandler() { |
180 | return null; |
181 | } |
182 | |
183 | public ProtocolEncoder getEncoder() { |
184 | return null; |
185 | } |
186 | |
187 | public ProtocolDecoder getDecoder() { |
188 | return null; |
189 | } |
190 | |
191 | public void close( boolean wait ) { |
192 | } |
193 | |
194 | public void write(Object message) { |
195 | } |
196 | |
197 | public int getScheduledWriteRequests() |
198 | { |
199 | return 0; |
200 | } |
201 | |
202 | public TransportType getTransportType() { |
203 | return TransportType.SOCKET; |
204 | } |
205 | |
206 | public boolean isConnected() { |
207 | return false; |
208 | } |
209 | |
210 | public SessionConfig getConfig() { |
211 | return null; |
212 | } |
213 | |
214 | public SocketAddress getRemoteAddress() { |
215 | return null; |
216 | } |
217 | |
218 | public SocketAddress getLocalAddress() { |
219 | return null; |
220 | } |
221 | |
222 | public ProtocolFilterChain getFilterChain() |
223 | { |
224 | return null; |
225 | } |
226 | } |
227 | } |