122 lines
5.3 KiB
Java
122 lines
5.3 KiB
Java
/*
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* Copyright (c) 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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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.nio.ByteOrder;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Arrays;
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import java.util.spi.ToolProvider;
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import jdk.internal.util.OperatingSystem;
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/*
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* @test
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* @bug 8206890
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* @summary verify that the image created through jlink uses the byte order of the target platform
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* @modules java.base/jdk.internal.util
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* @comment the test asserts the presence of locale specific error message in the test's output,
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* so we explicitly use en_US locale
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* @run main/othervm -Duser.language=en -Duser.country=US JLinkEndianTest
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*/
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public class JLinkEndianTest {
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private static final ToolProvider JLINK_TOOL = ToolProvider.findFirst("jlink")
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.orElseThrow(() -> new RuntimeException("jlink tool not found"));
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public static void main(final String[] args) throws Exception {
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testEndianMismatch();
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testCorrectEndian();
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}
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/**
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* Launches jlink with "--endian" option whose value doesn't match the target platform.
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* Asserts that the jlink process fails with an error.
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*/
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private static void testEndianMismatch() throws Exception {
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// we use a --endian value which doesn't match the current platform's endianness.
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// this should cause the jlink image generation against the current platform to fail
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final String endianOptVal = ByteOrder.nativeOrder() == ByteOrder.LITTLE_ENDIAN
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? "big" : "little";
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final String[] args = new String[]{
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"-v",
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"--endian", endianOptVal,
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"--add-modules", "java.base",
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"--output", "image-should-not-have-been-created"
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};
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final StringWriter jlinkStdout = new StringWriter();
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final StringWriter jlinkStderr = new StringWriter();
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System.out.println("Launching jlink with args: " + Arrays.toString(args));
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final int exitCode = JLINK_TOOL.run(new PrintWriter(jlinkStdout),
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new PrintWriter(jlinkStderr), args);
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System.out.println(jlinkStdout);
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System.err.println(jlinkStderr);
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if (exitCode == 0) {
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throw new AssertionError("jlink command was expected to fail but completed with" +
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" exit code: " + exitCode);
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}
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// verify the failure was due to the expected error (message)
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if (!jlinkStdout.toString().contains("does not match endianness of target platform")) {
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throw new AssertionError("jlink process' stderr didn't contain the expected" +
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" error message");
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}
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}
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/**
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* Launches jlink with "--endian" option whose value matches the target platform's endianness.
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* Asserts that the jlink process successfully creates the image.
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*/
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private static void testCorrectEndian() throws Exception {
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// we use a --endian value which matches the current platform
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final String endianOptVal = ByteOrder.nativeOrder() == ByteOrder.LITTLE_ENDIAN
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? "little" : "big";
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final Path imageOutDir = Path.of("correct-endian-image");
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final String[] args = new String[]{
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"-v",
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"--endian", endianOptVal,
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"--add-modules", "java.base",
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"--output", imageOutDir.toString()
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};
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final StringWriter jlinkStdout = new StringWriter();
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final StringWriter jlinkStderr = new StringWriter();
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System.out.println("Launching jlink with args: " + Arrays.toString(args));
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final int exitCode = JLINK_TOOL.run(new PrintWriter(jlinkStdout),
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new PrintWriter(jlinkStderr), args);
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System.out.println(jlinkStdout);
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System.err.println(jlinkStderr);
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if (exitCode != 0) {
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throw new AssertionError("jlink command was expected to succeed but completed with" +
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" exit code: " + exitCode);
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}
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// trivially verify <image-dir>/bin/java exists
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final Path javaBinary = OperatingSystem.isWindows()
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? Path.of(imageOutDir.toString(), "bin", "java.exe")
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: Path.of(imageOutDir.toString(), "bin", "java");
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if (!Files.exists(javaBinary)) {
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throw new AssertionError("jlink image generation was expected to create "
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+ javaBinary + ", but that file is missing");
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}
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}
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}
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