/*
 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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 id=rotation
 * @requires vm.gc.Shenandoah
 *
 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
 *      -XX:+ShenandoahRegionSampling
 *      -Xlog:gc+region=trace:region-snapshots-%p.log::filesize=100,filecount=3
 *      -XX:+UseShenandoahGC
 *      TestShenandoahRegionLogging
 */
import java.io.File;

public class TestShenandoahRegionLogging {
    public static void main(String[] args) throws Exception {
        System.gc();

        File directory = new File(".");
        File[] files = directory.listFiles((dir, name) -> name.startsWith("region-snapshots"));

        // Expect one or more log files when region logging is enabled
        if (files.length == 0) {
            throw new Error("Expected at least one log file for region sampling data.");
        }
    }
}