102 lines
3.7 KiB
Java
102 lines
3.7 KiB
Java
/*
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* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4691425
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* @summary Test the read and write of GZIPInput/OutputStream, including
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* concatenated .gz inputstream
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* @key randomness
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*/
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import java.io.*;
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import java.util.*;
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import java.util.zip.*;
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public class GZIPInputStreamRead {
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public static void main(String[] args) throws Throwable {
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Random rnd = new Random();
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for (int i = 1; i < 100; i++) {
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int members = rnd.nextInt(10) + 1;
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ByteArrayOutputStream srcBAOS = new ByteArrayOutputStream();
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ByteArrayOutputStream dstBAOS = new ByteArrayOutputStream();
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for (int j = 0; j < members; j++) {
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byte[] src = new byte[rnd.nextInt(8192) + 1];
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rnd.nextBytes(src);
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srcBAOS.write(src);
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try (GZIPOutputStream gzos = new GZIPOutputStream(dstBAOS)) {
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gzos.write(src);
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}
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}
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byte[] srcBytes = srcBAOS.toByteArray();
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byte[] dstBytes = dstBAOS.toByteArray();
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// try different size of buffer to read the
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// GZIPInputStream
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/* just for fun when running manually
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for (int j = 1; j < 10; j++) {
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test(srcBytes, dstBytes, j);
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}
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*/
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for (int j = 0; j < 10; j++) {
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int readBufSZ = rnd.nextInt(2048) + 1;
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test(srcBytes,
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dstBytes,
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readBufSZ,
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512); // the defualt buffer size
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test(srcBytes,
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dstBytes,
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readBufSZ,
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rnd.nextInt(4096) + 1);
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}
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}
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}
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private static void test(byte[] src, byte[] dst,
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int readBufSize, int gzisBufSize)
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throws Throwable
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{
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try (ByteArrayInputStream bais = new ByteArrayInputStream(dst);
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GZIPInputStream gzis = new GZIPInputStream(bais, gzisBufSize))
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{
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byte[] result = new byte[src.length + 10];
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byte[] buf = new byte[readBufSize];
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int n = 0;
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int off = 0;
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while ((n = gzis.read(buf, 0, buf.length)) != -1) {
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System.arraycopy(buf, 0, result, off, n);
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off += n;
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// no range check, if overflow, let it fail
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}
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if (off != src.length || gzis.available() != 0 ||
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!Arrays.equals(src, Arrays.copyOf(result, off))) {
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throw new RuntimeException(
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"GZIPInputStream reading failed! " +
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", src.len=" + src.length +
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", read=" + off);
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}
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}
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}
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}
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