TestHumongousThresholdArgs.java

/*
 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

/*
 * @test TestHumongousThresholdArgs
 * @summary Test that Shenandoah humongous threshold args are checked
 * @key gc
 * @library /testlibrary
 *
 * @run driver TestHumongousThresholdArgs
 */

import com.oracle.java.testlibrary.*;

public class TestHumongousThresholdArgs {
    public static void main(String[] args) throws Exception {
        {
            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
                    "-Xmx128m",
                    "-XX:+UnlockExperimentalVMOptions",
                    "-XX:+UseShenandoahGC",
                    "-version");
            OutputAnalyzer output = new OutputAnalyzer(pb.start());
            output.shouldHaveExitValue(0);
        }

        int[] valid = new int[] {1, 10, 50, 90, 100};
        int[] invalid = new int[] {-100, -1, 0, 101, 1000};

        for (int v : valid) {
            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
                    "-Xmx128m",
                    "-XX:+UnlockExperimentalVMOptions",
                    "-XX:+UseShenandoahGC",
                    "-XX:ShenandoahHumongousThreshold=" + v,
                    "-version");
            OutputAnalyzer output = new OutputAnalyzer(pb.start());
            output.shouldHaveExitValue(0);
        }

        for (int v : invalid) {
            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
                    "-Xmx128m",
                    "-XX:+UnlockExperimentalVMOptions",
                    "-XX:+UseShenandoahGC",
                    "-XX:ShenandoahHumongousThreshold=" + v,
                    "-version");
            OutputAnalyzer output = new OutputAnalyzer(pb.start());
            output.shouldHaveExitValue(1);
        }
    }
}