| /* |
| * Copyright (c) 2016, 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 8149757 8144062 |
| * @summary Test that StandardJavaFileManager uses the correct version of a |
| * class from a multi-release jar on classpath |
| * @library /tools/lib |
| * @modules jdk.compiler/com.sun.tools.javac.api |
| * jdk.compiler/com.sun.tools.javac.main |
| * @build toolbox.ToolBox |
| * @run testng MultiReleaseJarAwareSJFM |
| */ |
| |
| import org.testng.Assert; |
| import org.testng.annotations.AfterClass; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.DataProvider; |
| import org.testng.annotations.Test; |
| |
| import javax.tools.FileObject; |
| import javax.tools.JavaFileManager; |
| import javax.tools.StandardJavaFileManager; |
| import javax.tools.ToolProvider; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| import java.lang.invoke.MethodType; |
| import java.util.List; |
| |
| import toolbox.JarTask; |
| import toolbox.JavacTask; |
| import toolbox.ToolBox; |
| |
| public class MultiReleaseJarAwareSJFM { |
| |
| private final String version8 = |
| "package version;\n" + |
| "\n" + |
| "public class Version {\n" + |
| " public int getVersion() {\n" + |
| " return 8;\n" + |
| " }\n" + |
| "}\n"; |
| |
| private final String version9 = |
| "package version;\n" + |
| "\n" + |
| "public class Version {\n" + |
| " public int getVersion() {\n" + |
| " int version = (new PackagePrivate()).getVersion();\n" + |
| " if (version == 9) return 9;\n" + |
| " return version;\n" + |
| " }\n" + |
| "}\n"; |
| |
| private final String packagePrivate = |
| "package version;\n" + |
| "\n" + |
| "class PackagePrivate {\n" + |
| " int getVersion() {\n" + |
| " return 9;\n" + |
| " }\n" + |
| "}\n"; |
| |
| private final String version10 = |
| "package version;\n" + |
| "\n" + |
| "public class Version {\n" + |
| " public int getVersion() {\n" + |
| " return 10;\n" + |
| " }\n" + |
| "}\n"; |
| |
| private final String manifest = |
| "Manifest-Version: 1.0\n" + |
| "Multi-Release: true\n"; |
| |
| private final ToolBox tb = new ToolBox(); |
| |
| private final JavaFileManager.Location jloc = new JavaFileManager.Location() { |
| @Override |
| public String getName() { |
| return "Multi-Release Jar"; |
| } |
| @Override |
| public boolean isOutputLocation() { |
| return false; |
| } |
| }; |
| |
| @BeforeClass |
| public void setup() throws Exception { |
| tb.createDirectories("classes", |
| "classes/META-INF/versions/9", |
| "classes/META-INF/versions/10"); |
| new JavacTask(tb) |
| .outdir("classes") |
| .sources(version8) |
| .run(); |
| new JavacTask(tb) |
| .outdir("classes/META-INF/versions/9") |
| .sources(version9, packagePrivate) |
| .run(); |
| new JavacTask(tb) |
| .outdir("classes/META-INF/versions/10") |
| .sources(version10) |
| .run(); |
| new JarTask(tb, "multi-release.jar") |
| .manifest(manifest) |
| .baseDir("classes") |
| .files("version/Version.class", |
| "META-INF/versions/9/version/Version.class", |
| "META-INF/versions/9/version/PackagePrivate.class", |
| "META-INF/versions/10/version/Version.class") |
| .run(); |
| } |
| |
| @AfterClass |
| public void teardown() throws Exception { |
| tb.deleteFiles( |
| "classes/META-INF/versions/10/version/Version.class", |
| "classes/META-INF/versions/10/version", |
| "classes/META-INF/versions/10/", |
| "classes/META-INF/versions/9/version/Version.class", |
| "classes/META-INF/versions/9/version/PackagePrivate.class", |
| "classes/META-INF/versions/9/version", |
| "classes/META-INF/versions/9", |
| "classes/META-INF/versions", |
| "classes/META-INF", |
| "classes/version/Version.class", |
| "classes/version", |
| "classes", |
| "multi-release.jar" |
| ); |
| } |
| |
| @DataProvider(name = "versions") |
| public Object[][] data() { |
| return new Object[][] { |
| {"", 8}, |
| {"8", 8}, |
| {"9", 9}, |
| {"runtime", Runtime.version().major()} |
| }; |
| } |
| |
| @Test(dataProvider = "versions") |
| public void test(String version, int expected) throws Throwable { |
| StandardJavaFileManager jfm = ToolProvider.getSystemJavaCompiler().getStandardFileManager(null, null, null); |
| jfm.setLocation(jloc, List.of(new File("multi-release.jar"))); |
| |
| if (version.length() > 0) { |
| jfm.handleOption("--multi-release", List.of(version).iterator()); |
| } |
| |
| CustomClassLoader cldr = new CustomClassLoader(jfm); |
| Class<?> versionClass = cldr.loadClass("version.Version"); |
| MethodType mt = MethodType.methodType(int.class); |
| MethodHandle mh = MethodHandles.lookup().findVirtual(versionClass, "getVersion", mt); |
| int v = (int)mh.invoke(versionClass.newInstance()); |
| Assert.assertEquals(v, expected); |
| |
| jfm.close(); |
| } |
| |
| private class CustomClassLoader extends ClassLoader { |
| private final JavaFileManager jfm; |
| |
| public CustomClassLoader(JavaFileManager jfm) { |
| super(null); |
| this.jfm = jfm; |
| } |
| |
| @Override |
| protected Class<?> findClass(String name) throws ClassNotFoundException { |
| int n = name.lastIndexOf('.'); |
| String pkg = n == -1 ? "" : name.substring(0, n); |
| String cls = name.substring(n + 1) + ".class"; |
| byte[] b; |
| try { |
| FileObject obj = jfm.getFileForInput(jloc, pkg, cls); |
| try (InputStream is = obj.openInputStream()) { |
| b = is.readAllBytes(); |
| } |
| } catch (IOException x) { |
| throw new ClassNotFoundException(x.getMessage(), x); |
| } |
| return defineClass(name, b, 0, b.length); |
| } |
| } |
| } |
| |