149 lines
7.0 KiB
Java
149 lines
7.0 KiB
Java
/*
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* Copyright (c) 2024, 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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import java.io.InputStream;
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import java.net.URL;
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import java.net.URLClassLoader;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Arrays;
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import java.util.jar.Attributes;
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import java.util.jar.Manifest;
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import jdk.test.lib.util.JarUtils;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.ValueSource;
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import static java.nio.charset.StandardCharsets.US_ASCII;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertNotNull;
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import static org.junit.jupiter.api.Assertions.assertNull;
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/*
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* @test
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* @bug 8338445
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* @summary verify that the jdk.internal.loader.URLClassPath closes the JarFile
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* instances that it no longer uses for loading
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* @library /test/lib
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* @build jdk.test.lib.util.JarUtils
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* @comment This test expects MalformedURLException for some specific URLs.
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* We use othervm to prevent interference from other tests which
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* might have installed custom URLStreamHandler(s)
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* @run junit/othervm JarLoaderCloseTest
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*/
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public class JarLoaderCloseTest {
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private static final String RESOURCE_NAME = "foo-bar.txt";
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private static final String RESOURCE_CONTENT = "Hello world";
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private static final Path TEST_SCRATCH_DIR = Path.of(".");
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@BeforeAll
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static void beforeAll() throws Exception {
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// create a file which will be added to the JAR file that gets tested
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Files.writeString(TEST_SCRATCH_DIR.resolve(RESOURCE_NAME), RESOURCE_CONTENT);
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}
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/*
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* Creates a JAR file with a manifest which has a Class-Path entry value with malformed URLs.
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* Then uses a URLClassLoader backed by the JAR file in its classpath, loads some resource,
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* closes the URLClassLoader and then expects that the underlying JAR file can be deleted
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* from the filesystem.
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*/
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@ParameterizedTest
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@ValueSource(strings = {
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"C:\\foo\\bar\\hello/world.jar lib2.jar",
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"C:/hello/world/foo.jar",
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"lib4.jar C:\\bar\\foo\\world/hello.jar"
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})
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public void testMalformedClassPathEntry(final String classPathValue) throws Exception {
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final Manifest manifest = createManifestWithClassPath(classPathValue);
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final Path jar = Files.createTempFile(TEST_SCRATCH_DIR, "8338445", ".jar");
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// create the JAR file with the given manifest and an arbitrary file
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JarUtils.createJarFile(jar, manifest, TEST_SCRATCH_DIR, Path.of(RESOURCE_NAME));
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System.out.println("created jar at " + jar + " with manifest:");
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manifest.write(System.out);
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final URL[] urlClassPath = new URL[]{jar.toUri().toURL()};
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// Create a URLClassLoader backed by the JAR file and load a non-existent resource just to
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// exercise the URLClassPath code of loading the jar and parsing the Class-Path entry.
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// Then close the classloader. After the classloader is closed
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// issue a delete on the underlying JAR file on the filesystem. The delete is expected
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// to succeed.
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try (final URLClassLoader cl = new URLClassLoader(urlClassPath)) {
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try (final InputStream is = cl.getResourceAsStream("non-existent.txt")) {
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assertNull(is, "unexpectedly found a resource in classpath "
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+ Arrays.toString(urlClassPath));
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}
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}
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// now delete the JAR file and verify the delete worked
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Files.delete(jar);
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assertFalse(Files.exists(jar), jar + " exists even after being deleted");
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}
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/*
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* Creates a JAR file with a manifest which has a Class-Path entry value with URLs
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* that are parsable but point to files that don't exist on the filesystem.
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* Then uses a URLClassLoader backed by the JAR file in its classpath, loads some resource,
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* closes the URLClassLoader and then expects that the underlying JAR file can be deleted
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* from the filesystem.
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*/
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@ParameterizedTest
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@ValueSource(strings = {
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"/home/me/hello/world.jar lib9.jar",
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"lib10.jar"
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})
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public void testParsableClassPathEntry(final String classPathValue) throws Exception {
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final Manifest manifest = createManifestWithClassPath(classPathValue);
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final Path jar = Files.createTempFile(TEST_SCRATCH_DIR, "8338445", ".jar");
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// create the JAR file with the given manifest and an arbitrary file
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JarUtils.createJarFile(jar, manifest, TEST_SCRATCH_DIR, Path.of(RESOURCE_NAME));
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System.out.println("created jar at " + jar + " with manifest:");
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manifest.write(System.out);
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final URL[] urlClassPath = new URL[]{jar.toUri().toURL()};
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// Create a URLClassLoader backed by the JAR file and load a resource
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// and verify the resource contents.
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// Then close the classloader. After the classloader is closed
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// issue a delete on the underlying JAR file on the filesystem. The delete is expected
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// to succeed.
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try (final URLClassLoader cl = new URLClassLoader(urlClassPath)) {
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try (final InputStream is = cl.getResourceAsStream(RESOURCE_NAME)) {
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assertNotNull(is, RESOURCE_NAME + " not located by classloader in classpath "
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+ Arrays.toString(urlClassPath));
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final String content = new String(is.readAllBytes(), US_ASCII);
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assertEquals(RESOURCE_CONTENT, content, "unexpected content in " + RESOURCE_NAME);
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}
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}
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// now delete the JAR file and verify the delete worked
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Files.delete(jar);
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assertFalse(Files.exists(jar), jar + " exists even after being deleted");
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}
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private static Manifest createManifestWithClassPath(final String classPathValue) {
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final Manifest manifest = new Manifest();
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final Attributes mainAttributes = manifest.getMainAttributes();
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mainAttributes.putValue("Manifest-Version", "1.0");
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mainAttributes.putValue("Class-Path", classPathValue);
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return manifest;
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}
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}
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