jdk-24/test/jdk/sun/tools/jcmd/JcmdOutputEncodingTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 *
 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

import jdk.test.lib.Utils;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.JDKToolLauncher;

/*
 * @test
 * @bug 8222491 8273187
 * @summary Tests if we handle the encoding of jcmd output correctly.
 * @library /test/lib
 * @run main JcmdOutputEncodingTest
 */
public class JcmdOutputEncodingTest {

    public static void main(String[] args) throws Exception {
        testThreadDump();
    }

    private static void testThreadDump() throws Exception {
        String marker = "markerName" + "\u00e4\u0bb5".repeat(60);
        Charset cs = StandardCharsets.UTF_8;
        Thread.currentThread().setName(marker);

        JDKToolLauncher launcher = JDKToolLauncher.createUsingTestJDK("jcmd");
        launcher.addVMArgs(Utils.getTestJavaOpts());
        launcher.addVMArg("-Dfile.encoding=" + cs);
        launcher.addVMArg("-Dsun.stdout.encoding=" + cs);
        launcher.addToolArg(Long.toString(ProcessTools.getProcessId()));
        launcher.addToolArg("Thread.print");

        ProcessBuilder processBuilder = new ProcessBuilder();
        processBuilder.command(launcher.getCommand());
        OutputAnalyzer output = ProcessTools.executeProcess(processBuilder, null, cs);
        output.shouldHaveExitValue(0);
        output.shouldContain(marker);
    }
}