| /* |
| * 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.commons.compress.compressors.lz4; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import org.apache.commons.compress.AbstractTestCase; |
| import org.apache.commons.compress.compressors.lz77support.Parameters; |
| import org.apache.commons.compress.utils.IOUtils; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.junit.runners.Parameterized; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(Parameterized.class) |
| public final class BlockLZ4CompressorRoundtripTest extends AbstractTestCase { |
| |
| @org.junit.runners.Parameterized.Parameters(name = "using {0}") |
| public static Collection<Object[]> factory() { |
| return Arrays.asList(new Object[][] { |
| new Object[] { "default", BlockLZ4CompressorOutputStream.createParameterBuilder().build() }, |
| new Object[] { "tuned for speed", |
| BlockLZ4CompressorOutputStream.createParameterBuilder().tunedForSpeed().build() }, |
| new Object[] { "tuned for compression ratio", |
| BlockLZ4CompressorOutputStream.createParameterBuilder().tunedForCompressionRatio().build() } |
| }); |
| } |
| |
| private final String config; |
| private final Parameters params; |
| |
| public BlockLZ4CompressorRoundtripTest(final String config, final Parameters params) { |
| this.config = config; |
| this.params = params; |
| } |
| |
| private void roundTripTest(final String testFile) throws IOException { |
| final File input = getFile(testFile); |
| long start = System.currentTimeMillis(); |
| final File outputSz = new File(dir, input.getName() + ".block.lz4"); |
| try (FileInputStream is = new FileInputStream(input); |
| final FileOutputStream os = new FileOutputStream(outputSz); |
| BlockLZ4CompressorOutputStream los = new BlockLZ4CompressorOutputStream(os, params)) { |
| IOUtils.copy(is, los); |
| } |
| System.err.println("Configuration: " + config); |
| System.err.println(input.getName() + " written, uncompressed bytes: " + input.length() |
| + ", compressed bytes: " + outputSz.length() + " after " + (System.currentTimeMillis() - start) + "ms"); |
| start = System.currentTimeMillis(); |
| try (FileInputStream is = new FileInputStream(input); |
| BlockLZ4CompressorInputStream sis = new BlockLZ4CompressorInputStream(new FileInputStream(outputSz))) { |
| final byte[] expected = IOUtils.toByteArray(is); |
| final byte[] actual = IOUtils.toByteArray(sis); |
| Assert.assertArrayEquals(expected, actual); |
| } |
| System.err.println(outputSz.getName() + " read after " + (System.currentTimeMillis() - start) + "ms"); |
| } |
| |
| // should yield decent compression |
| @Test |
| public void blaTarRoundtrip() throws IOException { |
| roundTripTest("bla.tar"); |
| } |
| |
| // yields no compression at all |
| @Test |
| public void gzippedLoremIpsumRoundtrip() throws IOException { |
| roundTripTest("lorem-ipsum.txt.gz"); |
| } |
| |
| // yields no compression at all |
| @Test |
| public void biggerFileRoundtrip() throws IOException { |
| roundTripTest("COMPRESS-256.7z"); |
| } |
| |
| } |