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/*
* Copyright (c) 2010, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
@bug 7003462
@summary Make sure cached Inflater does not get finalized.
@run junit FinalizeInflater
*/
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
public class FinalizeInflater {
// ZIP file produced by this test
private Path zip = Path.of("finalize-inflater.zip");
/**
* Create the sample ZIP used in this test
*
* @throws IOException if an unexpected IOException occurs
*/
@BeforeEach
public void setUp() throws IOException {
try (OutputStream out = Files.newOutputStream(zip);
ZipOutputStream zo = new ZipOutputStream(out)) {
zo.putNextEntry(new ZipEntry("file.txt"));
byte[] hello = "hello".getBytes(StandardCharsets.UTF_8);
for (int i = 0; i < 100; i++) {
zo.write(hello);
}
}
}
/**
* Delete the ZIP file produced by this test
*
* @throws IOException if an unexpected IOException occurs
*/
@AfterEach
public void cleanup() throws IOException {
Files.deleteIfExists(zip);
}
/**
* A cached Inflater should not be made invalid by finalization
*
* @throws IOException if an unexpected IOException occurs
*/
@Test
public void shouldNotFinalizeInflaterInPool() throws IOException {
try (ZipFile zf = new ZipFile(zip.toFile())) {
ZipEntry ze = zf.getEntry("file.txt");
read(zf.getInputStream(ze));
System.gc();
System.runFinalization();
System.gc();
// read again
read(zf.getInputStream(ze));
}
}
private static void read(InputStream is)
throws IOException
{
Wrapper wrapper = new Wrapper(is);
is.readAllBytes();
}
static class Wrapper {
InputStream is;
public Wrapper(InputStream is) {
this.is = is;
}
@Override
protected void finalize() throws Throwable {
super.finalize();
is.close();
}
}
}
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