/* * 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(); } } }