/*
* 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.mina.filter.codec;
import java.net.SocketAddress;
import java.util.ArrayList;
import java.util.List;
import junit.framework.Assert;
import junit.framework.TestCase;
import org.apache.mina.common.DefaultTransportMetadata;
import org.apache.mina.common.IoBuffer;
import org.apache.mina.common.IoSession;
import org.apache.mina.common.IoSessionConfig;
/**
* Tests {@link CumulativeProtocolDecoder}.
*
* @author The Apache MINA Project (dev@mina.apache.org)
* @version $Rev: 604779 $, $Date: 2007-12-16 23:11:58 -0700 (Sun, 16 Dec 2007) $
*/
public class CumulativeProtocolDecoderTest extends TestCase {
private final ProtocolCodecSession session = new ProtocolCodecSession();
private IoBuffer buf;
private IntegerDecoder decoder;
public static void main(String[] args) {
junit.textui.TestRunner.run(CumulativeProtocolDecoderTest.class);
}
@Override
protected void setUp() throws Exception {
buf = IoBuffer.allocate(16);
decoder = new IntegerDecoder();
session.setTransportMetadata(
new DefaultTransportMetadata(
"mina", "dummy", false, true, SocketAddress.class,
IoSessionConfig.class, IoBuffer.class));
}
@Override
protected void tearDown() throws Exception {
decoder.dispose(session);
}
public void testCumulation() throws Exception {
buf.put((byte) 0);
buf.flip();
decoder.decode(session, buf, session.getDecoderOutput());
Assert.assertEquals(0, session.getDecoderOutputQueue().size());
Assert.assertEquals(buf.limit(), buf.position());
buf.clear();
buf.put((byte) 0);
buf.put((byte) 0);
buf.put((byte) 1);
buf.flip();
decoder.decode(session, buf, session.getDecoderOutput());
Assert.assertEquals(1, session.getDecoderOutputQueue().size());
Assert.assertEquals(new Integer(1), session.getDecoderOutputQueue().poll());
Assert.assertEquals(buf.limit(), buf.position());
}
public void testRepeatitiveDecode() throws Exception {
for (int i = 0; i < 4; i++) {
buf.putInt(i);
}
buf.flip();
decoder.decode(session, buf, session.getDecoderOutput());
Assert.assertEquals(4, session.getDecoderOutputQueue().size());
Assert.assertEquals(buf.limit(), buf.position());
List<Object> expected = new ArrayList<Object>();
for (int i = 0; i < 4; i++) {
expected.add(new Integer(i));
}
Assert.assertEquals(expected, session.getDecoderOutputQueue());
}
public void testWrongImplementationDetection() throws Exception {
try {
new WrongDecoder().decode(session, buf, session.getDecoderOutput());
Assert.fail();
} catch (IllegalStateException e) {
// OK
}
}
private static class IntegerDecoder extends CumulativeProtocolDecoder {
@Override
protected boolean doDecode(IoSession session, IoBuffer in,
ProtocolDecoderOutput out) throws Exception {
Assert.assertTrue(in.hasRemaining());
if (in.remaining() < 4) {
return false;
}
out.write(new Integer(in.getInt()));
return true;
}
public void dispose() throws Exception {
}
}
private static class WrongDecoder extends CumulativeProtocolDecoder {
@Override
protected boolean doDecode(IoSession session, IoBuffer in,
ProtocolDecoderOutput out) throws Exception {
return true;
}
public void dispose() throws Exception {
}
}
}