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/*
* Copyright (c) 1999, 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 4214795
* @summary Make sure the same inflater will only be recycled
* once.
* @run junit ReleaseInflater
*/
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.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;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class ReleaseInflater {
// ZIP file produced in this test
private Path zip = Path.of("release-inflater.zip");
/**
* Create a sample ZIP file for use by tests
* @param name name of the ZIP file to create
* @return a sample ZIP file
* @throws IOException if an unexpected IOException occurs
*/
@BeforeEach
public void setUp() throws IOException {
try (ZipOutputStream zo = new ZipOutputStream(Files.newOutputStream(zip))) {
zo.putNextEntry(new ZipEntry("file.txt"));
zo.write("helloworld".getBytes(StandardCharsets.UTF_8));
}
}
/**
* Delete the ZIP and JAR files produced after each test method
* @throws IOException if an unexpected IOException occurs
*/
@AfterEach
public void cleanup() throws IOException {
Files.deleteIfExists(zip);
}
/**
* Verify that the same Inflater is not recycled across input streams
* @throws IOException if an unexpected IOException occurs
*/
@Test
public void recycleInflaterOnlyOnce() throws IOException {
try (ZipFile zf = new ZipFile(zip.toFile())) {
ZipEntry e = zf.getEntry("file.txt");
InputStream in1 = zf.getInputStream(e);
// close the stream, the inflater will be released
in1.close();
// close the stream again, should be no-op
in1.close();
// create two new streams, allocating inflaters
InputStream in2 = zf.getInputStream(e);
InputStream in3 = zf.getInputStream(e);
// check to see if they influence each other
assertEquals(in2.read(), in3.read(), "Stream is corrupted!");
}
}
}
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