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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 org.apache.commons.compress.AbstractTestCase;
import org.apache.commons.compress.compressors.z.ZCompressorInputStream;
import org.apache.commons.compress.utils.IOUtils;
import org.junit.Test;
public final class ZTestCase extends AbstractTestCase {
@Test
public void testZUnarchive() throws Exception {
testUnarchive(new StreamWrapper<CompressorInputStream>() {
@Override
public CompressorInputStream wrap(final InputStream is) throws IOException {
return new ZCompressorInputStream(is);
}
});
}
@Test
public void testZUnarchiveViaFactory() throws Exception {
testUnarchive(new StreamWrapper<CompressorInputStream>() {
@Override
public CompressorInputStream wrap(final InputStream is) throws Exception {
return new CompressorStreamFactory()
.createCompressorInputStream(CompressorStreamFactory.Z, is);
}
});
}
@Test
public void testZUnarchiveViaAutoDetection() throws Exception {
testUnarchive(new StreamWrapper<CompressorInputStream>() {
@Override
public CompressorInputStream wrap(final InputStream is) throws Exception {
return new CompressorStreamFactory()
.createCompressorInputStream(new BufferedInputStream(is));
}
});
}
@Test
public void testMatches() throws Exception {
assertFalse(ZCompressorInputStream.matches(new byte[] { 1, 2, 3, 4 }, 4));
assertFalse(ZCompressorInputStream.matches(new byte[] { 0x1f, 2, 3, 4 }, 4));
assertFalse(ZCompressorInputStream.matches(new byte[] { 1, (byte)0x9d, 3, 4 },
4));
assertFalse(ZCompressorInputStream.matches(new byte[] { 0x1f, (byte) 0x9d, 3, 4 },
3));
assertTrue(ZCompressorInputStream.matches(new byte[] { 0x1f, (byte) 0x9d, 3, 4 },
4));
}
private void testUnarchive(final StreamWrapper<CompressorInputStream> wrapper) throws Exception {
final File input = getFile("bla.tar.Z");
final File output = new File(dir, "bla.tar");
try (InputStream is = new FileInputStream(input)) {
final InputStream in = wrapper.wrap(is);
FileOutputStream out = null;
try {
out = new FileOutputStream(output);
IOUtils.copy(in, out);
} finally {
if (out != null) {
out.close();
}
in.close();
}
}
}
}
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