/*
* 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.hadoop.io.compress;
import static org.junit.Assert.fail;
import java.util.Random;
import org.apache.hadoop.io.compress.CompressDecompressTester.CompressionTestStrategy;
import org.apache.hadoop.io.compress.lz4.Lz4Compressor;
import org.apache.hadoop.io.compress.lz4.Lz4Decompressor;
import org.apache.hadoop.io.compress.snappy.SnappyCompressor;
import org.apache.hadoop.io.compress.snappy.SnappyDecompressor;
import org.apache.hadoop.io.compress.zlib.BuiltInZlibDeflater;
import org.apache.hadoop.io.compress.zlib.BuiltInZlibInflater;
import org.junit.Test;
import com.google.common.collect.ImmutableSet;
/**
* Test for pairs:
* <pre>
* SnappyCompressor/SnappyDecompressor
* Lz4Compressor/Lz4Decompressor
* BuiltInZlibDeflater/new BuiltInZlibInflater
*
*
* Note: we can't use ZlibCompressor/ZlibDecompressor here
* because his constructor can throw exception (if native libraries not found)
* For ZlibCompressor/ZlibDecompressor pair testing used {@code TestZlibCompressorDecompressor}
*
* </pre>
*
*/
public class TestCompressorDecompressor {
private static final Random rnd = new Random(12345L);
@Test
public void testCompressorDecompressor() {
// no more for this data
int SIZE = 44 * 1024;
byte[] rawData = generate(SIZE);
try {
CompressDecompressTester.of(rawData)
.withCompressDecompressPair(new SnappyCompressor(), new SnappyDecompressor())
.withCompressDecompressPair(new Lz4Compressor(), new Lz4Decompressor())
.withCompressDecompressPair(new BuiltInZlibDeflater(), new BuiltInZlibInflater())
.withTestCases(ImmutableSet.of(CompressionTestStrategy.COMPRESS_DECOMPRESS_SINGLE_BLOCK,
CompressionTestStrategy.COMPRESS_DECOMPRESS_BLOCK,
CompressionTestStrategy.COMPRESS_DECOMPRESS_ERRORS,
CompressionTestStrategy.COMPRESS_DECOMPRESS_WITH_EMPTY_STREAM))
.test();
} catch (Exception ex) {
fail("testCompressorDecompressor error !!!" + ex);
}
}
@Test
public void testCompressorDecompressorWithExeedBufferLimit() {
int BYTE_SIZE = 100 * 1024;
byte[] rawData = generate(BYTE_SIZE);
try {
CompressDecompressTester.of(rawData)
.withCompressDecompressPair(
new SnappyCompressor(BYTE_SIZE + BYTE_SIZE / 2),
new SnappyDecompressor(BYTE_SIZE + BYTE_SIZE / 2))
.withCompressDecompressPair(new Lz4Compressor(BYTE_SIZE),
new Lz4Decompressor(BYTE_SIZE))
.withTestCases(ImmutableSet.of(CompressionTestStrategy.COMPRESS_DECOMPRESS_SINGLE_BLOCK,
CompressionTestStrategy.COMPRESS_DECOMPRESS_BLOCK,
CompressionTestStrategy.COMPRESS_DECOMPRESS_ERRORS,
CompressionTestStrategy.COMPRESS_DECOMPRESS_WITH_EMPTY_STREAM))
.test();
} catch (Exception ex) {
fail("testCompressorDecompressorWithExeedBufferLimit error !!!" + ex);
}
}
public static byte[] generate(int size) {
byte[] array = new byte[size];
for (int i = 0; i < size; i++)
array[i] = (byte) rnd.nextInt(16);
return array;
}
}