/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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 io.netty.buffer;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
/**
* Tests duplicated channel buffers
*/
public class DuplicatedByteBufTest extends AbstractByteBufTest {
@Override
protected ByteBuf newBuffer(int length, int maxCapacity) {
ByteBuf wrapped = Unpooled.buffer(length, maxCapacity);
ByteBuf buffer = new DuplicatedByteBuf(wrapped);
assertEquals(wrapped.writerIndex(), buffer.writerIndex());
assertEquals(wrapped.readerIndex(), buffer.readerIndex());
return buffer;
}
@Test(expected = NullPointerException.class)
public void shouldNotAllowNullInConstructor() {
new DuplicatedByteBuf(null);
}
// See https://github.com/netty/netty/issues/1800
@Test
public void testIncreaseCapacityWrapped() {
ByteBuf buffer = newBuffer(8);
ByteBuf wrapped = buffer.unwrap();
wrapped.writeByte(0);
wrapped.readerIndex(wrapped.readerIndex() + 1);
buffer.writerIndex(buffer.writerIndex() + 1);
wrapped.capacity(wrapped.capacity() * 2);
assertEquals((byte) 0, buffer.readByte());
}
@Test
public void testMarksInitialized() {
ByteBuf wrapped = Unpooled.buffer(8);
try {
wrapped.writerIndex(6);
wrapped.readerIndex(1);
ByteBuf duplicate = new DuplicatedByteBuf(wrapped);
// Test writer mark
duplicate.writerIndex(duplicate.writerIndex() + 1);
duplicate.resetWriterIndex();
assertEquals(wrapped.writerIndex(), duplicate.writerIndex());
// Test reader mark
duplicate.readerIndex(duplicate.readerIndex() + 1);
duplicate.resetReaderIndex();
assertEquals(wrapped.readerIndex(), duplicate.readerIndex());
} finally {
wrapped.release();
}
}
}