92 lines
3.6 KiB
Java
92 lines
3.6 KiB
Java
/*
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* Copyright (c) 2022, 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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/**
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* @test
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* @bug 8291360
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* @summary Test getting the class file version for java.lang.Class API
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* @modules java.base/java.lang:open
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* @compile classFileVersions.jcod
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* @run main/othervm --enable-preview ClassFileVersionTest
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*/
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import java.lang.reflect.*;
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public class ClassFileVersionTest {
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static Method m;
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public static void testIt(String className, int expectedResult) throws Exception {
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Class<?> testClass = Class.forName(className);
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int ver = (int)m.invoke(testClass);
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if (ver != expectedResult) {
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int exp_minor = (expectedResult >> 16) & 0x0000FFFF;
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int exp_major = expectedResult & 0x0000FFFF;
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int got_minor = (ver >> 16) & 0x0000FFFF;
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int got_major = ver & 0x0000FFFF;
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throw new RuntimeException(
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"Expected " + exp_minor + ":" + exp_major + " but got " + got_minor + ":" + got_major);
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}
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}
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public static void main(String argv[]) throws Throwable {
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Class<?> cl = java.lang.Class.class;
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m = cl.getDeclaredMethod("getClassFileVersion", new Class[0]);
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m.setAccessible(true);
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testIt("Version64", 64);
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testIt("Version59", 59);
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testIt("Version45_3", 0x3002D); // 3:45
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// test minor version of 65535.
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testIt("Version64_65535", 0xFFFF0040); // 0xFFFF0040 = 65535:64
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// test primitive array. should return latest version.
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int ver = (int)m.invoke((new int[3]).getClass());
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if (ver != 64) {
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int got_minor = (ver >> 16) & 0x0000FFFF;
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int got_major = ver & 0x0000FFFF;
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throw new RuntimeException(
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"Expected 0:64, but got " + got_minor + ":" + got_major + " for primitive array");
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}
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// test object array. should return class file version of component.
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ver = (int)m.invoke((new Version59[2]).getClass());
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if (ver != 59) {
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int got_minor = (ver >> 16) & 0x0000FFFF;
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int got_major = ver & 0x0000FFFF;
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throw new RuntimeException(
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"Expected 0:59, but got " + got_minor + ":" + got_major + " for object array");
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}
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// test multi-dimensional object array. should return class file version of component.
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ver = (int)m.invoke((new Version59[3][2]).getClass());
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if (ver != 59) {
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int got_minor = (ver >> 16) & 0x0000FFFF;
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int got_major = ver & 0x0000FFFF;
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throw new RuntimeException(
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"Expected 0:59, but got " + got_minor + ":" + got_major + " for object array");
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}
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}
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}
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