TestVMOptions.java

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/*
 * @test
 * @bug 8060256
 * @summary Test various command line options
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver TestVMOptions
 */

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import java.io.File;

public class TestVMOptions {
  public static void main(String[] args) throws Exception {
    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
        "-XX:bogus",
        "-XX:+IgnoreUnrecognizedVMOptions",
        "-XX:+PrintFlagsInitial");
    OutputAnalyzer output = new OutputAnalyzer(pb.start());
    output.shouldContain("bool UseSerialGC");

    pb = ProcessTools.createJavaProcessBuilder(
        "-XX:-PrintVMOptions", "-version");
    output = new OutputAnalyzer(pb.start());
    output.shouldMatch("(openjdk|java)\\sversion");

    File dir = new File(System.getProperty("test.src", "."));
    File file = new File(dir, "flagfile.txt");
    String s = file.getAbsolutePath();
    pb = ProcessTools.createJavaProcessBuilder("-XX:Flags="+s);
    output = new OutputAnalyzer(pb.start());
    output.shouldContain("VM option '-IgnoreUnrecognizedVMOptions'");
  }
}