| /* |
| * 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.iotdb.tsfile.compress; |
| |
| import org.apache.iotdb.tsfile.utils.PublicBAOS; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.xerial.snappy.Snappy; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Arrays; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class CompressTest { |
| |
| private final String inputString = |
| "Hello snappy-java! Snappy-java is a JNI-based wrapper of " |
| + "Snappy, a fast compressor/decompressor."; |
| |
| @Before |
| public void setUp() {} |
| |
| @After |
| public void tearDown() {} |
| |
| @Test |
| public void snappyCompressorTest1() throws IOException { |
| PublicBAOS out = new PublicBAOS(); |
| out.write(inputString.getBytes(StandardCharsets.UTF_8)); |
| ICompressor.SnappyCompressor compressor = new ICompressor.SnappyCompressor(); |
| IUnCompressor.SnappyUnCompressor unCompressor = new IUnCompressor.SnappyUnCompressor(); |
| byte[] compressed = compressor.compress(out.getBuf()); |
| byte[] uncompressed = unCompressor.uncompress(compressed); |
| String result = new String(uncompressed, StandardCharsets.UTF_8); |
| assertEquals(inputString, result); |
| } |
| |
| @Test |
| public void snappyCompressorTest2() throws IOException { |
| PublicBAOS out = new PublicBAOS(); |
| out.write(inputString.getBytes(StandardCharsets.UTF_8)); |
| ICompressor.SnappyCompressor compressor = new ICompressor.SnappyCompressor(); |
| IUnCompressor.SnappyUnCompressor unCompressor = new IUnCompressor.SnappyUnCompressor(); |
| byte[] compressed = new byte[compressor.getMaxBytesForCompression(out.size())]; |
| int size = compressor.compress(out.getBuf(), 0, out.size(), compressed); |
| byte[] bytes = Arrays.copyOfRange(compressed, 0, size); |
| byte[] uncompressed = unCompressor.uncompress(bytes); |
| String result = new String(uncompressed, StandardCharsets.UTF_8); |
| assertEquals(inputString, result); |
| } |
| |
| @Test |
| public void snappyTest() throws IOException { |
| byte[] compressed = Snappy.compress(inputString.getBytes(StandardCharsets.UTF_8)); |
| byte[] uncompressed = Snappy.uncompress(compressed); |
| |
| String result = new String(uncompressed, StandardCharsets.UTF_8); |
| assertEquals(inputString, result); |
| } |
| |
| @Test |
| public void lz4CompressorTest1() throws IOException { |
| PublicBAOS out = new PublicBAOS(); |
| out.write(inputString.getBytes(StandardCharsets.UTF_8)); |
| ICompressor compressor = new ICompressor.IOTDBLZ4Compressor(); |
| IUnCompressor unCompressor = new IUnCompressor.LZ4UnCompressor(); |
| byte[] compressed = compressor.compress(out.getBuf()); |
| byte[] uncompressed = unCompressor.uncompress(compressed); |
| String result = new String(uncompressed, StandardCharsets.UTF_8); |
| assertEquals(inputString, result); |
| } |
| |
| @Test |
| public void lz4CompressorTest2() throws IOException { |
| PublicBAOS out = new PublicBAOS(); |
| out.write(inputString.getBytes(StandardCharsets.UTF_8)); |
| ICompressor compressor = new ICompressor.IOTDBLZ4Compressor(); |
| IUnCompressor unCompressor = new IUnCompressor.LZ4UnCompressor(); |
| byte[] compressed = new byte[compressor.getMaxBytesForCompression(out.size())]; |
| int size = compressor.compress(out.getBuf(), 0, out.size(), compressed); |
| byte[] bytes = Arrays.copyOfRange(compressed, 0, size); |
| byte[] uncompressed = unCompressor.uncompress(bytes); |
| String result = new String(uncompressed, StandardCharsets.UTF_8); |
| assertEquals(inputString, result); |
| } |
| |
| @Test |
| public void zstdCompressorTest1() throws IOException { |
| PublicBAOS out = new PublicBAOS(); |
| out.write(inputString.getBytes(StandardCharsets.UTF_8)); |
| ICompressor compressor = new ICompressor.ZstdCompressor(); |
| IUnCompressor unCompressor = new IUnCompressor.ZstdUnCompressor(); |
| byte[] compressed = compressor.compress(out.getBuf()); |
| byte[] uncompressed = new byte[out.size()]; |
| unCompressor.uncompress(compressed, 0, compressed.length, uncompressed, 0); |
| String result = new String(uncompressed, StandardCharsets.UTF_8); |
| assertEquals(inputString, result); |
| } |
| |
| @Test |
| public void zstdCompressorTest2() throws IOException { |
| byte[] input = inputString.getBytes(); |
| ICompressor compressor = new ICompressor.ZstdCompressor(); |
| IUnCompressor unCompressor = new IUnCompressor.ZstdUnCompressor(); |
| ByteBuffer data = ByteBuffer.allocateDirect(input.length); |
| data.put(input); |
| data.position(0); |
| ByteBuffer compressed = |
| ByteBuffer.allocateDirect(compressor.getMaxBytesForCompression(input.length)); |
| int compressedSize = compressor.compress(data, compressed); |
| byte[] compressedData = new byte[compressedSize]; |
| compressed.position(0); |
| ByteBuffer compressedDataBuffer = ByteBuffer.allocateDirect(compressedSize); |
| compressed.get(compressedData, 0, compressedSize); |
| compressedDataBuffer.put(compressedData); |
| compressedDataBuffer.position(0); |
| |
| ByteBuffer uncompressed = ByteBuffer.allocateDirect(input.length); |
| int uncompressedSize = unCompressor.uncompress(compressedDataBuffer, uncompressed); |
| uncompressed.position(0); |
| assertEquals(inputString, ReadWriteIOUtils.readStringFromDirectByteBuffer(uncompressed)); |
| } |
| } |