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/*
* Copyright (c) 2012, 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
* @run junit StreamZipEntriesTest
* @summary Make sure we can stream entries of a zip file.
*/
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.OutputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.HashSet;
import java.util.Set;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.jar.Manifest;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import static org.junit.jupiter.api.Assertions.*;
public class StreamZipEntriesTest {
// ZIP file produced in this test
private Path zip = Path.of("stream.zip");
// JAR file produced in this test
private Path jar = Path.of("stream.jar");
/**
* Create sample ZIP and JAR files used in 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("entry1.txt"));
zo.write("hello".getBytes(StandardCharsets.UTF_8));
zo.putNextEntry(new ZipEntry("entry2.txt"));
zo.write("hello".getBytes(StandardCharsets.UTF_8));
}
try (OutputStream out = Files.newOutputStream(jar);
ZipOutputStream zo = new ZipOutputStream(out)) {
// A JAR file may start with a META-INF/ directory before the manifest
zo.putNextEntry(new ZipEntry("META-INF/"));
// Write the manifest
zo.putNextEntry(new ZipEntry("META-INF/MANIFEST.MF"));
new Manifest().write(zo);
// Write two regular entries
zo.putNextEntry(new ZipEntry("entry1.txt"));
zo.write("hello".getBytes(StandardCharsets.UTF_8));
zo.putNextEntry(new ZipEntry("entry2.txt"));
zo.write("hello".getBytes(StandardCharsets.UTF_8));
}
}
/**
* Delete the ZIP file produced after each test method
* @throws IOException if an unexpected IOException occurs
*/
@AfterEach
public void cleanup() throws IOException {
Files.deleteIfExists(zip);
Files.deleteIfExists(jar);
}
/**
* Verify that ZipFile.stream() produces the expected entries
* @throws IOException if an unexpected IOException occurs
*/
@Test
public void testStreamZip() throws IOException {
Set<String> names = new HashSet<>(Set.of("entry1.txt", "entry2.txt"));
try (ZipFile zf = new ZipFile(zip.toFile())) {
zf.stream().forEach(e -> {
assertTrue(e instanceof ZipEntry);
String name = e.getName();
assertNotNull(names.remove(name));
String toString = e.toString();
assertEquals(name, toString);
});
// Check that all expected names were processed
assertTrue(names.isEmpty());
// Check that Stream.toArray produces the expected result
Object elements[] = zf.stream().toArray();
assertEquals(2, elements.length);
assertEquals(elements[0].toString(), "entry1.txt");
assertEquals(elements[1].toString(), "entry2.txt");
}
}
/**
* Verify that JarFile.stream() produces the expected entries
* @throws IOException if an unexpected IOException occurs
*/
@Test
public void testStreamJar() throws IOException {
try (JarFile jf = new JarFile(jar.toFile())) {
Set<String> names = new HashSet<>(Set.of(
"META-INF/",
"META-INF/MANIFEST.MF",
"entry1.txt",
"entry2.txt"
));
jf.stream().forEach(e -> {
assertTrue(e instanceof JarEntry);
String name = e.getName();
assertNotNull(names.remove(name));
String toString = e.toString();
assertEquals(name, toString);
}
);
// Check that all expected names were processed
assertTrue(names.isEmpty(), "Unprocessed entries: " + names);
// Check that Stream.toArray produces the expected result
Object elements[] = jf.stream().toArray();
assertEquals(4, elements.length);
assertEquals(elements[0].toString(), "META-INF/");
assertEquals(elements[1].toString(), "META-INF/MANIFEST.MF");
assertEquals(elements[2].toString(), "entry1.txt");
assertEquals(elements[3].toString(), "entry2.txt");
}
}
/**
* Calling ZipFile.stream() on a closed ZipFile should throw ISE
* @throws IOException if an unexpected IOException occurs
*/
@Test
public void testClosedZipFile() throws IOException {
ZipFile zf = new ZipFile(zip.toFile());
zf.close();
assertThrows(IllegalStateException.class, () -> {
Stream s = zf.stream();
});
}
/**
* Calling JarFile.stream() on a closed JarFile should throw ISE
* @throws IOException if an unexpected IOException occurs
*/
@Test
public void testClosedJarFile() throws IOException {
JarFile jf = new JarFile(jar.toFile());
jf.close();
assertThrows(IllegalStateException.class, () -> {
Stream s = jf.stream();
});
}
}
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