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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

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 * 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).

 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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/**

 * @test

 * @modules jdk.attach

 * @run main/othervm --limit-modules jdk.attach -Djdk.attach.allowAttachSelf

 *    GetPackageBootLoaderChildLayer

 * @summary Exercise Class.getPackage on a class defined to the boot loader

 *    but in a module that is in a child layer rather than the boot layer

 */

import com.sun.tools.attach.VirtualMachine;

public class GetPackageBootLoaderChildLayer {

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

        // ensure that the java.management module is not in the boot layer

        ModuleLayer.boot().findModule("java.management").ifPresent(m -> {

            throw new RuntimeException("java.management loaded!!!");

        });

        // start local JMX agent via the attach mechanism

        String vmid = "" + ProcessHandle.current().pid();

        VirtualMachine vm = VirtualMachine.attach(vmid);

        vm.startLocalManagementAgent();

        // check layer, class loader, and Package object

        Class<?> clazz = Class.forName("javax.management.MXBean");

        if (clazz.getModule().getLayer() == ModuleLayer.boot())

            throw new RuntimeException("Module is in boot layer!!!");

        ClassLoader loader = clazz.getClassLoader();

        if (loader != null)

            throw new RuntimeException("Unexpected class loader: " + loader);

        Package p = clazz.getPackage();

        if (!p.getName().equals("javax.management"))

            throw new RuntimeException("Unexpected package " + p);

    }

}