BooleanFlagWithInvalidValue.java

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/*
 * @test
 * @bug 8006298
 * @summary Setting an invalid value for a bool argument should result in a useful error message
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver BooleanFlagWithInvalidValue
 */

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

public class BooleanFlagWithInvalidValue {
  public static void main(String[] args) throws Exception {
    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
        "-XX:+PrintWarnings=8", "-version");

    OutputAnalyzer output = new OutputAnalyzer(pb.start());
    output.shouldContain("Improperly specified VM option 'PrintWarnings=8'");
    output.shouldHaveExitValue(1);

    pb = ProcessTools.createJavaProcessBuilder(
        "-XX:-PrintWarnings=8", "-version");

    output = new OutputAnalyzer(pb.start());
    output.shouldContain("Improperly specified VM option 'PrintWarnings=8'");
    output.shouldHaveExitValue(1);
  }
}