/*
* 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.archivers.tar;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import java.io.BufferedInputStream;
import java.io.InputStream;
import java.util.Random;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.junit.Test;
public class BigFilesIT {
@Test
public void readFileBiggerThan8GByteStar() throws Exception {
readFileBiggerThan8GByte("/8.star.tar.gz");
}
@Test
public void readFileBiggerThan8GBytePosix() throws Exception {
readFileBiggerThan8GByte("/8.posix.tar.gz");
}
@Test
public void readFileHeadersOfArchiveBiggerThan8GByte() throws Exception {
InputStream in = null;
GzipCompressorInputStream gzin = null;
TarArchiveInputStream tin = null;
try {
in = new BufferedInputStream(BigFilesIT.class
.getResourceAsStream("/8.posix.tar.gz")
);
gzin = new GzipCompressorInputStream(in);
tin = new TarArchiveInputStream(gzin);
TarArchiveEntry e = tin.getNextTarEntry();
assertNotNull(e);
assertNull(tin.getNextTarEntry());
} finally {
if (tin != null) {
tin.close();
}
if (gzin != null) {
gzin.close();
}
if (in != null) {
in.close();
}
}
}
private void readFileBiggerThan8GByte(String name) throws Exception {
InputStream in = null;
GzipCompressorInputStream gzin = null;
TarArchiveInputStream tin = null;
try {
in = new BufferedInputStream(BigFilesIT.class
.getResourceAsStream(name));
gzin = new GzipCompressorInputStream(in);
tin = new TarArchiveInputStream(gzin);
TarArchiveEntry e = tin.getNextTarEntry();
assertNotNull(e);
assertEquals(8200l * 1024 * 1024, e.getSize());
long read = 0;
Random r = new Random(System.currentTimeMillis());
int readNow;
byte[] buf = new byte[1024 * 1024];
while ((readNow = tin.read(buf, 0, buf.length)) > 0) {
// testing all bytes for a value of 0 is going to take
// too long, just pick a few ones randomly
for (int i = 0; i < 100; i++) {
int idx = r.nextInt(readNow);
assertEquals("testing byte " + (read + idx), 0, buf[idx]);
}
read += readNow;
}
assertEquals(8200l * 1024 * 1024, read);
assertNull(tin.getNextTarEntry());
} finally {
if (tin != null) {
tin.close();
}
if (gzin != null) {
gzin.close();
}
if (in != null) {
in.close();
}
}
}
}