TestLongUnrecognizedVMOption.java

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/*
 * @test
 * @bug 8129786
 * @summary Verify that JVM correctly processes very long unrecognized VM option
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 * @modules java.management
 * @run driver TestLongUnrecognizedVMOption
 */

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

public class TestLongUnrecognizedVMOption {

    /* Create option with very long length(greater than 500 characters) */
    private static final String VERY_LONG_OPTION = String.format("%500s=10", "unrecognizedoption").replace(" ", "a");

    public static void main(String[] args) throws Exception {
        OutputAnalyzer output;

        output = new OutputAnalyzer(ProcessTools.createJavaProcessBuilder("-XX:" + VERY_LONG_OPTION, "-version").start());
        output.shouldHaveExitValue(1);
        output.shouldContain(String.format("Unrecognized VM option '%s'", VERY_LONG_OPTION));
    }
}