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/*
* 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;
import static org.junit.Assert.*;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Random;
import org.apache.commons.compress.AbstractTestCase;
import org.apache.commons.compress.compressors.snappy.FramedSnappyCompressorInputStream;
import org.apache.commons.compress.utils.IOUtils;
import org.junit.Test;
public final class FramedSnappyTestCase
extends AbstractTestCase {
@Test
public void testDefaultExtraction() throws Exception {
testUnarchive(new StreamWrapper<CompressorInputStream>() {
@Override
public CompressorInputStream wrap(final InputStream is) throws IOException {
return new FramedSnappyCompressorInputStream(is);
}
});
}
@Test
public void testDefaultExtractionViaFactory() throws Exception {
testUnarchive(new StreamWrapper<CompressorInputStream>() {
@Override
public CompressorInputStream wrap(final InputStream is) throws Exception {
return new CompressorStreamFactory()
.createCompressorInputStream(CompressorStreamFactory.SNAPPY_FRAMED,
is);
}
});
}
@Test
public void testDefaultExtractionViaFactoryAutodetection() throws Exception {
testUnarchive(new StreamWrapper<CompressorInputStream>() {
@Override
public CompressorInputStream wrap(final InputStream is) throws Exception {
return new CompressorStreamFactory().createCompressorInputStream(is);
}
});
}
private void testUnarchive(final StreamWrapper<CompressorInputStream> wrapper) throws Exception {
final File input = getFile("bla.tar.sz");
final File output = new File(dir, "bla.tar");
try (FileInputStream is = new FileInputStream(input)) {
// the intermediate BufferedInputStream is there for mark
// support in the autodetection test
final CompressorInputStream in = wrapper.wrap(new BufferedInputStream(is));
FileOutputStream out = null;
try {
out = new FileOutputStream(output);
IOUtils.copy(in, out);
assertEquals(995, in.getBytesRead());
} finally {
if (out != null) {
out.close();
}
in.close();
}
}
final File original = getFile("bla.tar");
try (FileInputStream written = new FileInputStream(output)) {
try (FileInputStream orig = new FileInputStream(original)) {
assertArrayEquals(IOUtils.toByteArray(written),
IOUtils.toByteArray(orig));
}
}
}
@Test
public void testRoundtrip() throws Exception {
testRoundtrip(getFile("test.txt"));
testRoundtrip(getFile("bla.tar"));
testRoundtrip(getFile("COMPRESS-256.7z"));
}
@Test
public void testRoundtripWithOneBigWrite() throws Exception {
Random r = new Random();
File input = new File(dir, "bigChunkTest");
try (FileOutputStream fs = new FileOutputStream(input)) {
for (int i = 0 ; i < 1 << 17; i++) {
fs.write(r.nextInt(256));
}
}
long start = System.currentTimeMillis();
final File outputSz = new File(dir, input.getName() + ".sz");
try (FileInputStream is = new FileInputStream(input);
FileOutputStream os = new FileOutputStream(outputSz);
CompressorOutputStream sos = new CompressorStreamFactory()
.createCompressorOutputStream("snappy-framed", os)) {
byte[] b = IOUtils.toByteArray(is);
sos.write(b[0]);
sos.write(b, 1, b.length - 1); // must be split into multiple compressed chunks
}
System.err.println(input.getName() + " written, uncompressed bytes: " + input.length()
+ ", compressed bytes: " + outputSz.length() + " after " + (System.currentTimeMillis() - start) + "ms");
try (FileInputStream is = new FileInputStream(input);
CompressorInputStream sis = new CompressorStreamFactory()
.createCompressorInputStream("snappy-framed", new FileInputStream(outputSz))) {
byte[] expected = IOUtils.toByteArray(is);
byte[] actual = IOUtils.toByteArray(sis);
assertArrayEquals(expected, actual);
}
}
private void testRoundtrip(File input) throws Exception {
long start = System.currentTimeMillis();
final File outputSz = new File(dir, input.getName() + ".sz");
try (FileInputStream is = new FileInputStream(input);
FileOutputStream os = new FileOutputStream(outputSz);
CompressorOutputStream sos = new CompressorStreamFactory()
.createCompressorOutputStream("snappy-framed", os)) {
IOUtils.copy(is, sos);
}
System.err.println(input.getName() + " written, uncompressed bytes: " + input.length()
+ ", compressed bytes: " + outputSz.length() + " after " + (System.currentTimeMillis() - start) + "ms");
try (FileInputStream is = new FileInputStream(input);
CompressorInputStream sis = new CompressorStreamFactory()
.createCompressorInputStream("snappy-framed", new FileInputStream(outputSz))) {
byte[] expected = IOUtils.toByteArray(is);
byte[] actual = IOUtils.toByteArray(sis);
assertArrayEquals(expected, actual);
}
}
}
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