130 lines
4.3 KiB
Java
130 lines
4.3 KiB
Java
/*
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* Copyright (c) 2014, 2016, 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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* @summary Exercise Class#getModule
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* @modules java.base/jdk.internal.org.objectweb.asm
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* java.base/jdk.internal.misc
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* java.desktop
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* @run testng GetModuleTest
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*/
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import java.awt.Component;
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import jdk.internal.org.objectweb.asm.ClassWriter;
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import static jdk.internal.org.objectweb.asm.Opcodes.*;
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import jdk.internal.misc.Unsafe;
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import static org.testng.Assert.*;
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public class GetModuleTest {
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private static final Unsafe U = Unsafe.getUnsafe();
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private static final Module TEST_MODULE = GetModuleTest.class.getModule();
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@DataProvider(name = "testclasses")
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public Object[][] testClasses() {
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return new Object[][] {
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// unnamed module
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{ GetModuleTest.class, null },
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{ GetModuleTest[].class, null },
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{ GetModuleTest[][].class, null },
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// should return named module
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{ int.class, "java.base" },
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{ int[].class, "java.base" },
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{ int[][].class, "java.base" },
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{ void.class, "java.base" },
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{ Object.class, "java.base" },
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{ Object[].class, "java.base" },
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{ Object[][].class, "java.base" },
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{ Component.class, "java.desktop" },
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{ Component[].class, "java.desktop" },
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{ Component[][].class, "java.desktop" },
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};
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}
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@Test(dataProvider = "testclasses")
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public void testGetModule(Class<?> type, String expected) {
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Module m = type.getModule();
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assertNotNull(m);
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if (expected == null) {
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assertTrue(m == TEST_MODULE);
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} else {
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assertEquals(m.getName(), expected);
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}
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}
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@DataProvider(name = "hostclasses")
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public Object[][] hostClasses() {
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return new Object[][] {
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{ GetModuleTest.class, null },
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{ Object.class, null },
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{ Component.class, null },
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};
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}
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/**
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* Exercise Class::getModule on VM anonymous classes
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*/
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@Test(dataProvider = "hostclasses")
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public void testGetModuleOnVMAnonymousClass(Class<?> hostClass, String ignore) {
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// choose a class name in the same package as the host class
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String prefix = hostClass.getPackageName();
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if (prefix.length() > 0)
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prefix = prefix.replace('.', '/') + "/";
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String className = prefix + "Anon";
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// create the class
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String superName = "java/lang/Object";
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ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS
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+ ClassWriter.COMPUTE_FRAMES);
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cw.visit(V1_8, ACC_PUBLIC + ACC_FINAL + ACC_SUPER,
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className, null, superName, null);
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byte[] classBytes = cw.toByteArray();
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int cpPoolSize = constantPoolSize(classBytes);
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Class<?> anonClass
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= U.defineAnonymousClass(hostClass, classBytes, new Object[cpPoolSize]);
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assertTrue(anonClass.getModule() == hostClass.getModule());
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}
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private static int constantPoolSize(byte[] classFile) {
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return ((classFile[8] & 0xFF) << 8) | (classFile[9] & 0xFF);
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}
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}
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