120 lines
5.2 KiB
Java
120 lines
5.2 KiB
Java
/*
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* Copyright (c) 2018, 2023, 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 8198908
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* @summary Check that preview minor version and --enable-preview are handled
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* correctly.
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @run main PreviewVersion
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*/
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import java.io.File;
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import jdk.test.lib.compiler.InMemoryJavaCompiler;
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import jdk.test.lib.ByteCodeLoader;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.helpers.ClassFileInstaller;
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public class PreviewVersion {
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public static void main(String args[]) throws Throwable {
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System.out.println("Regression test for bug 8198908");
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byte klassbuf[] = InMemoryJavaCompiler.compile("PVTest",
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"public class PVTest { " +
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"public static void main(String argv[]) { " +
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"System.out.println(\"Hi!\"); } }");
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// Set class's minor version to 65535.
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klassbuf[4] = -1;
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klassbuf[5] = -1;
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// Run the test. This should fail because --enable-preview is not specified.
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ClassFileInstaller.writeClassToDisk("PVTest", klassbuf, System.getProperty("test.classes"));
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
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"-cp", "." + File.pathSeparator + System.getProperty("test.classes"), "PVTest");
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OutputAnalyzer oa = new OutputAnalyzer(pb.start());
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oa.shouldContain("Preview features are not enabled");
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oa.shouldHaveExitValue(1);
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// This should be successful because --enable-preview is specified.
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("--enable-preview",
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"-cp", "." + File.pathSeparator + System.getProperty("test.classes"), "PVTest");
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oa = new OutputAnalyzer(pb.start());
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oa.shouldContain("Hi!");
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oa.shouldHaveExitValue(0);
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// Test -Xlog:class+preview
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("--enable-preview", "-Xlog:class+preview",
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"-cp", "." + File.pathSeparator + System.getProperty("test.classes"), "PVTest");
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oa = new OutputAnalyzer(pb.start());
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oa.shouldContain("[info][class,preview] Loading class PVTest that depends on preview features");
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oa.shouldHaveExitValue(0);
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// Subtract 1 from class's major version. The class should fail to load
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// because its major_version does not match the JVM current version.
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int prev_major_version = (klassbuf[6] << 8 | klassbuf[7]) - 1;
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klassbuf[6] = (byte)((prev_major_version >> 8) & 0xff);
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klassbuf[7] = (byte)(prev_major_version & 0xff);
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try {
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ByteCodeLoader.load("PVTest", klassbuf);
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throw new RuntimeException("UnsupportedClassVersionError exception not thrown");
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} catch (java.lang.UnsupportedClassVersionError e) {
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if (!e.getMessage().contains("compiled with preview features that are unsupported")) {
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throw new RuntimeException(
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"Wrong UnsupportedClassVersionError exception: " + e.getMessage());
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}
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}
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// Set class's major version to 45. The class should load because class
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// version 45.65535 is valid.
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klassbuf[6] = 0;
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klassbuf[7] = 45;
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try {
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ByteCodeLoader.load("PVTest", klassbuf);
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} catch (java.lang.UnsupportedClassVersionError e) {
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throw new RuntimeException(
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"Unexpected UnsupportedClassVersionError exception thrown: " + e.getMessage());
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}
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// Check that a class with a recent older major version > JDK-11 and a minor version
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// that is neither 0 nor 65535 fails to load.
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klassbuf[6] = 0;
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klassbuf[7] = 56;
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klassbuf[4] = 0;
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klassbuf[5] = 2;
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try {
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ByteCodeLoader.load("PVTest", klassbuf);
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throw new RuntimeException("UnsupportedClassVersionError exception not thrown");
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} catch (java.lang.UnsupportedClassVersionError e) {
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if (!e.getMessage().contains("was compiled with an invalid non-zero minor version")) {
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throw new RuntimeException(
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"Wrong UnsupportedClassVersionError exception: " + e.getMessage());
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}
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}
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}
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}
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