jdk-24/test/hotspot/jtreg/runtime/CommandLine/ObsoleteFlagErrorMessage.java

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/*
 * @test
 * @bug 8060449 8073989 8202744
 * @summary Newly obsolete command line options should still give useful error messages when used improperly.
 * @modules java.base/jdk.internal.misc
 * @library /test/lib
 * @requires vm.debug == true
 * @requires vm.flagless
 * @run driver ObsoleteFlagErrorMessage
 */

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

public class ObsoleteFlagErrorMessage {
  public static void main(String[] args) throws Exception {

    String flag = "DummyObsoleteTestFlag";

    // Case 1: Newly obsolete flags with extra junk appended should not be treated as newly obsolete (8060449)
    ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
        "-XX:" + flag + "PlusJunk", "-version");

    OutputAnalyzer output = new OutputAnalyzer(pb.start());
    output.shouldContain("Unrecognized VM option '" + flag + "PlusJunk'"); // Must identify bad option.
    output.shouldHaveExitValue(1);

    // Case 2: Newly obsolete flags should be recognized as newly obsolete (8073989)
    ProcessBuilder pb2 = ProcessTools.createLimitedTestJavaProcessBuilder(
        "-XX:+" + flag, "-version");

    OutputAnalyzer output2 = new OutputAnalyzer(pb2.start());
    output2.shouldHaveExitValue(0);
    output2.shouldContain("Ignoring option").shouldContain("support was removed");
    output2.shouldContain(flag);
  }
}