/*
* 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.cassandra.io.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.util.Random;
import java.util.concurrent.ThreadLocalRandom;
import org.junit.Assert;
import org.junit.Test;
import org.apache.cassandra.utils.ByteBufferUtil;
public class DataOutputTest
{
@Test
public void testDataOutputStreamPlus() throws IOException
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStreamPlus write = new DataOutputStreamPlus(bos);
DataInput canon = testWrite(write);
DataInput test = new DataInputStream(new ByteArrayInputStream(bos.toByteArray()));
testRead(test, canon);
}
@Test
public void testDataOutputChannelAndChannel() throws IOException
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStreamPlus write = new DataOutputStreamAndChannel(Channels.newChannel(bos));
DataInput canon = testWrite(write);
DataInput test = new DataInputStream(new ByteArrayInputStream(bos.toByteArray()));
testRead(test, canon);
}
@Test
public void testDataOutputBuffer() throws IOException
{
DataOutputBuffer write = new DataOutputBuffer();
DataInput canon = testWrite(write);
DataInput test = new DataInputStream(new ByteArrayInputStream(write.toByteArray()));
testRead(test, canon);
}
@Test
public void testDataOutputDirectByteBuffer() throws IOException
{
ByteBuffer buf = wrap(new byte[345], true);
DataOutputByteBuffer write = new DataOutputByteBuffer(buf.duplicate());
DataInput canon = testWrite(write);
DataInput test = new DataInputStream(new ByteArrayInputStream(ByteBufferUtil.getArray(buf)));
testRead(test, canon);
}
@Test
public void testDataOutputHeapByteBuffer() throws IOException
{
ByteBuffer buf = wrap(new byte[345], false);
DataOutputByteBuffer write = new DataOutputByteBuffer(buf.duplicate());
DataInput canon = testWrite(write);
DataInput test = new DataInputStream(new ByteArrayInputStream(ByteBufferUtil.getArray(buf)));
testRead(test, canon);
}
@Test
public void testFileOutputStream() throws IOException
{
File file = FileUtils.createTempFile("dataoutput", "test");
try
{
DataOutputStreamAndChannel write = new DataOutputStreamAndChannel(new FileOutputStream(file));
DataInput canon = testWrite(write);
write.close();
DataInputStream test = new DataInputStream(new FileInputStream(file));
testRead(test, canon);
test.close();
}
finally
{
Assert.assertTrue(file.delete());
}
}
@Test
public void testRandomAccessFile() throws IOException
{
File file = FileUtils.createTempFile("dataoutput", "test");
try
{
final RandomAccessFile raf = new RandomAccessFile(file, "rw");
DataOutputStreamAndChannel write = new DataOutputStreamAndChannel(Channels.newOutputStream(raf.getChannel()), raf.getChannel());
DataInput canon = testWrite(write);
write.close();
DataInputStream test = new DataInputStream(new FileInputStream(file));
testRead(test, canon);
test.close();
}
finally
{
Assert.assertTrue(file.delete());
}
}
@Test
public void testSequentialWriter() throws IOException
{
File file = FileUtils.createTempFile("dataoutput", "test");
final SequentialWriter writer = new SequentialWriter(file, 32);
DataOutputStreamAndChannel write = new DataOutputStreamAndChannel(writer, writer);
DataInput canon = testWrite(write);
write.flush();
write.close();
DataInputStream test = new DataInputStream(new FileInputStream(file));
testRead(test, canon);
test.close();
Assert.assertTrue(file.delete());
}
private DataInput testWrite(DataOutputPlus test) throws IOException
{
final ByteArrayOutputStream bos = new ByteArrayOutputStream();
final DataOutput canon = new DataOutputStream(bos);
Random rnd = ThreadLocalRandom.current();
byte[] bytes = new byte[50];
rnd.nextBytes(bytes);
ByteBufferUtil.writeWithLength(bytes, test);
ByteBufferUtil.writeWithLength(bytes, canon);
bytes = new byte[50];
rnd.nextBytes(bytes);
ByteBufferUtil.writeWithLength(wrap(bytes, false), test);
ByteBufferUtil.writeWithLength(bytes, canon);
bytes = new byte[50];
rnd.nextBytes(bytes);
ByteBufferUtil.writeWithLength(wrap(bytes, true), test);
ByteBufferUtil.writeWithLength(bytes, canon);
bytes = new byte[50];
rnd.nextBytes(bytes);
ByteBufferUtil.writeWithShortLength(bytes, test);
ByteBufferUtil.writeWithShortLength(bytes, canon);
bytes = new byte[50];
rnd.nextBytes(bytes);
ByteBufferUtil.writeWithShortLength(wrap(bytes, false), test);
ByteBufferUtil.writeWithShortLength(bytes, canon);
bytes = new byte[50];
rnd.nextBytes(bytes);
ByteBufferUtil.writeWithShortLength(wrap(bytes, true), test);
ByteBufferUtil.writeWithShortLength(bytes, canon);
// 318
{
long v = rnd.nextLong();
test.writeLong(v);
canon.writeLong(v);
}
{
int v = rnd.nextInt();
test.writeInt(v);
canon.writeInt(v);
}
{
short v = (short) rnd.nextInt();
test.writeShort(v);
canon.writeShort(v);
}
{
byte v = (byte) rnd.nextInt();
test.write(v);
canon.write(v);
}
{
double v = rnd.nextDouble();
test.writeDouble(v);
canon.writeDouble(v);
}
{
float v = (float) rnd.nextDouble();
test.writeFloat(v);
canon.writeFloat(v);
}
// 27
return new DataInputStream(new ByteArrayInputStream(bos.toByteArray()));
}
private void testRead(DataInput test, DataInput canon) throws IOException
{
Assert.assertEquals(ByteBufferUtil.readWithLength(canon), ByteBufferUtil.readWithLength(test));
Assert.assertEquals(ByteBufferUtil.readWithLength(canon), ByteBufferUtil.readWithLength(test));
Assert.assertEquals(ByteBufferUtil.readWithLength(canon), ByteBufferUtil.readWithLength(test));
Assert.assertEquals(ByteBufferUtil.readWithShortLength(canon), ByteBufferUtil.readWithShortLength(test));
Assert.assertEquals(ByteBufferUtil.readWithShortLength(canon), ByteBufferUtil.readWithShortLength(test));
Assert.assertEquals(ByteBufferUtil.readWithShortLength(canon), ByteBufferUtil.readWithShortLength(test));
assert test.readLong() == canon.readLong();
assert test.readInt() == canon.readInt();
assert test.readShort() == canon.readShort();
assert test.readByte() == canon.readByte();
assert test.readDouble() == canon.readDouble();
assert test.readFloat() == canon.readFloat();
try
{
test.readInt();
assert false;
}
catch (EOFException _)
{
}
}
private static ByteBuffer wrap(byte[] bytes, boolean direct)
{
ByteBuffer buf = direct ? ByteBuffer.allocateDirect(bytes.length + 20) : ByteBuffer.allocate(bytes.length + 20);
buf.position(10);
buf.limit(bytes.length + 10);
buf.duplicate().put(bytes);
return buf;
}
}