/*

 *

 * 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

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 */

/*

 * @test TestClassUnloadingArguments

 * @summary Test that loop mining arguments are sane

 * @key gc

 * @requires vm.gc.Shenandoah & !vm.graal.enabled

 * @library /test/lib

 * @run driver TestClassUnloadingArguments

 */

import java.util.*;

import jdk.test.lib.Asserts;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

public class TestClassUnloadingArguments {

    public static void testWith(String msg, boolean cu, boolean cuConc, String... args) throws Exception {

        String[] cmds = Arrays.copyOf(args, args.length + 2);

        cmds[args.length] = "-XX:+PrintFlagsFinal";

        cmds[args.length + 1] = "-version";

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);

        OutputAnalyzer output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldContain("ClassUnloading");

        output.shouldContain("ClassUnloadingWithConcurrentMark");

        Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloading.+?= (.+?) (.+?)", 2),

                Boolean.toString(cu),

                msg + ", but got wrong ClassUnloading");

        Asserts.assertEQ(output.firstMatch("(.+?) ClassUnloadingWithConcurrentMark.+?= (.+?) (.+?)", 2),

                Boolean.toString(cuConc),

                msg + ", but got wrong ClassUnloadingWithConcurrentMark");

    }

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

        testDefaultGC();

        testShenandoah();

    }

    public static void testDefaultGC() throws Exception {

        testWith("Default GC should have class unloading enabled",

                true, true);

        testWith("Default GC should disable everything",

                false, false,

                "-XX:-ClassUnloading");

        testWith("Default GC should disable conc unload",

                true, false,

                "-XX:-ClassUnloadingWithConcurrentMark");

        testWith("Default GC should not let conc unload to be enabled separately",

                false, false,

                "-XX:-ClassUnloading",

                "-XX:+ClassUnloadingWithConcurrentMark");

    }

    public static void testShenandoah() throws Exception {

        testWith("Shenandoah GC should have class unloading enabled",

                "-XX:+UnlockExperimentalVMOptions",

                "-XX:+UseShenandoahGC");

        testWith("Shenandoah GC should disable everything",

                false, false,

                "-XX:+UnlockExperimentalVMOptions",

                "-XX:+UseShenandoahGC",

                "-XX:-ClassUnloading");

        testWith("Shenandoah GC should enable conc unload",

                true, true,

                "-XX:+UnlockExperimentalVMOptions",

                "-XX:+UseShenandoahGC",

                "-XX:+ClassUnloadingWithConcurrentMark");

        testWith("Shenandoah GC should not let conc unload to be enabled separately",

                false, false,

                "-XX:+UnlockExperimentalVMOptions",

                "-XX:+UseShenandoahGC",

                "-XX:-ClassUnloading",

                "-XX:+ClassUnloadingWithConcurrentMark");

    }

}