218 lines
7.5 KiB
Java
218 lines
7.5 KiB
Java
/*
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* Copyright (c) 2016, 2018, 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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/*
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* @test
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* @bug 8149757 8144062 8196627
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* @summary Test that StandardJavaFileManager uses the correct version of a
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* class from a multi-release jar on classpath
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* @library /tools/lib
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* @modules jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.main
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* @build toolbox.ToolBox
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* @run testng MultiReleaseJarAwareSJFM
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*/
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import org.testng.Assert;
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import org.testng.annotations.AfterClass;
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import org.testng.annotations.BeforeClass;
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import javax.tools.FileObject;
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import javax.tools.JavaFileManager;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.ToolProvider;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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import java.util.List;
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import toolbox.JarTask;
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import toolbox.JavacTask;
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import toolbox.ToolBox;
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public class MultiReleaseJarAwareSJFM {
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private static final int CURRENT_VERSION = Runtime.version().major();
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private final String version8 =
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"package version;\n" +
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"\n" +
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"public class Version {\n" +
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" public int getVersion() {\n" +
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" return 8;\n" +
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" }\n" +
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"}\n";
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private final String version9 =
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"package version;\n" +
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"\n" +
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"public class Version {\n" +
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" public int getVersion() {\n" +
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" int version = (new PackagePrivate()).getVersion();\n" +
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" if (version == 9) return 9;\n" +
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" return version;\n" +
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" }\n" +
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"}\n";
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private final String packagePrivate =
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"package version;\n" +
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"\n" +
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"class PackagePrivate {\n" +
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" int getVersion() {\n" +
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" return 9;\n" +
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" }\n" +
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"}\n";
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private final String versionCurrent =
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"package version;\n" +
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"\n" +
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"public class Version {\n" +
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" public int getVersion() {\n" +
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" return " + CURRENT_VERSION +";\n" +
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" }\n" +
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"}\n";
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private final String manifest =
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"Manifest-Version: 1.0\n" +
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"Multi-Release: true\n";
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private final ToolBox tb = new ToolBox();
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private final JavaFileManager.Location jloc = new JavaFileManager.Location() {
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@Override
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public String getName() {
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return "Multi-Release Jar";
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}
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@Override
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public boolean isOutputLocation() {
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return false;
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}
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};
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@BeforeClass
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public void setup() throws Exception {
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tb.createDirectories("classes",
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"classes/META-INF/versions/9",
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"classes/META-INF/versions/" + CURRENT_VERSION);
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new JavacTask(tb)
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.outdir("classes")
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.sources(version8)
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.run();
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new JavacTask(tb)
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.outdir("classes/META-INF/versions/9")
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.sources(version9, packagePrivate)
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.run();
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new JavacTask(tb)
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.outdir("classes/META-INF/versions/" + CURRENT_VERSION)
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.sources(versionCurrent)
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.run();
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new JarTask(tb, "multi-release.jar")
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.manifest(manifest)
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.baseDir("classes")
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.files("version/Version.class",
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"META-INF/versions/9/version/Version.class",
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"META-INF/versions/9/version/PackagePrivate.class",
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"META-INF/versions/" + CURRENT_VERSION + "/version/Version.class")
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.run();
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}
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@AfterClass
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public void teardown() throws Exception {
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tb.deleteFiles(
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"classes/META-INF/versions/" + CURRENT_VERSION + "/version/Version.class",
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"classes/META-INF/versions/" + CURRENT_VERSION + "/version",
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"classes/META-INF/versions/" + CURRENT_VERSION,
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"classes/META-INF/versions/9/version/Version.class",
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"classes/META-INF/versions/9/version/PackagePrivate.class",
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"classes/META-INF/versions/9/version",
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"classes/META-INF/versions/9",
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"classes/META-INF/versions",
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"classes/META-INF",
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"classes/version/Version.class",
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"classes/version",
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"classes",
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"multi-release.jar"
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);
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}
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@DataProvider(name = "versions")
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public Object[][] data() {
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return new Object[][] {
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{"", 8},
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{"8", 8},
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{"9", 9},
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{"runtime", Runtime.version().major()}
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};
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}
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@Test(dataProvider = "versions")
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public void test(String version, int expected) throws Throwable {
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StandardJavaFileManager jfm = ToolProvider.getSystemJavaCompiler().getStandardFileManager(null, null, null);
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jfm.setLocation(jloc, List.of(new File("multi-release.jar")));
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if (version.length() > 0) {
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jfm.handleOption("--multi-release", List.of(version).iterator());
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}
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CustomClassLoader cldr = new CustomClassLoader(jfm);
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Class<?> versionClass = cldr.loadClass("version.Version");
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MethodType mt = MethodType.methodType(int.class);
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MethodHandle mh = MethodHandles.lookup().findVirtual(versionClass, "getVersion", mt);
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int v = (int)mh.invoke(versionClass.newInstance());
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Assert.assertEquals(v, expected);
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jfm.close();
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}
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private class CustomClassLoader extends ClassLoader {
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private final JavaFileManager jfm;
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public CustomClassLoader(JavaFileManager jfm) {
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super(null);
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this.jfm = jfm;
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}
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@Override
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protected Class<?> findClass(String name) throws ClassNotFoundException {
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int n = name.lastIndexOf('.');
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String pkg = n == -1 ? "" : name.substring(0, n);
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String cls = name.substring(n + 1) + ".class";
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byte[] b;
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try {
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FileObject obj = jfm.getFileForInput(jloc, pkg, cls);
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try (InputStream is = obj.openInputStream()) {
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b = is.readAllBytes();
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}
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} catch (IOException x) {
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throw new ClassNotFoundException(x.getMessage(), x);
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}
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return defineClass(name, b, 0, b.length);
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}
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}
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}
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