87 lines
3.2 KiB
Java
87 lines
3.2 KiB
Java
/*
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* Copyright 2017 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.unix.tests;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufAllocator;
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import io.netty.buffer.CompositeByteBuf;
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import io.netty.buffer.PooledByteBufAllocator;
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import io.netty.buffer.UnpooledByteBufAllocator;
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import org.junit.Test;
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import java.util.Collections;
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import java.util.LinkedList;
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import java.util.List;
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import static io.netty.channel.unix.Limits.IOV_MAX;
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import static io.netty.channel.unix.UnixChannelUtil.isBufferCopyNeededForWrite;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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public class UnixChannelUtilTest {
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@Test
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public void testPooledAllocatorIsBufferCopyNeededForWrite() {
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testIsBufferCopyNeededForWrite(PooledByteBufAllocator.DEFAULT);
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}
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@Test
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public void testUnPooledAllocatorIsBufferCopyNeededForWrite() {
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testIsBufferCopyNeededForWrite(UnpooledByteBufAllocator.DEFAULT);
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}
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private static void testIsBufferCopyNeededForWrite(ByteBufAllocator alloc) {
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ByteBuf byteBuf = alloc.directBuffer();
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assertFalse(isBufferCopyNeededForWrite(byteBuf));
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assertFalse(isBufferCopyNeededForWrite(byteBuf.asReadOnly()));
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assertTrue(byteBuf.release());
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byteBuf = alloc.heapBuffer();
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assertTrue(isBufferCopyNeededForWrite(byteBuf));
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assertTrue(isBufferCopyNeededForWrite(byteBuf.asReadOnly()));
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assertTrue(byteBuf.release());
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assertCompositeByteBufIsBufferCopyNeededForWrite(alloc, 2, 0, true);
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assertCompositeByteBufIsBufferCopyNeededForWrite(alloc, IOV_MAX + 1, 0, true);
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assertCompositeByteBufIsBufferCopyNeededForWrite(alloc, 0, 2, true);
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assertCompositeByteBufIsBufferCopyNeededForWrite(alloc, 1, 1, true);
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}
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private static void assertCompositeByteBufIsBufferCopyNeededForWrite(ByteBufAllocator alloc, int numDirect,
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int numHeap, boolean expected) {
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CompositeByteBuf comp = alloc.compositeBuffer(numDirect + numHeap);
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List<ByteBuf> byteBufs = new LinkedList<ByteBuf>();
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while (numDirect > 0) {
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byteBufs.add(alloc.directBuffer(1));
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numDirect--;
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}
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while (numHeap > 0) {
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byteBufs.add(alloc.heapBuffer(1));
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numHeap--;
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}
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Collections.shuffle(byteBufs);
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for (ByteBuf byteBuf : byteBufs) {
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comp.addComponent(byteBuf);
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}
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assertEquals(byteBufs.toString(), expected, isBufferCopyNeededForWrite(comp));
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assertTrue(comp.release());
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}
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}
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