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