/*

 * 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.

 *

 */

/*

 * @test

 * @bug 4974913

 * @summary Test that array classes can be found in signatures always

 * and can be deserialized by the deprecated MBeanServer.deserialize method

 * @author Eamonn McManus

 * @run clean ArrayClassTest

 * @run build ArrayClassTest

 * @run main ArrayClassTest

 */

import java.io.*;

import java.lang.reflect.*;

import java.net.*;

import javax.management.*;

import javax.management.loading.*;

public class ArrayClassTest {

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

        MBeanServer mbs = MBeanServerFactory.createMBeanServer();

        /* If this test isn't loaded by a URLClassLoader we will get

           a ClassCastException here, which is good because it means

           this test isn't valid.  */

        URLClassLoader testLoader =

            (URLClassLoader) ArrayClassTest.class.getClassLoader();

        // Create an MLet that can load the same class names but

        // will produce different results.

        ClassLoader loader = new SpyLoader(testLoader.getURLs());

        ObjectName loaderName = new ObjectName("test:type=SpyLoader");

        mbs.registerMBean(loader, loaderName);

        ObjectName testName = new ObjectName("test:type=Test");

        mbs.createMBean(Test.class.getName(), testName, loaderName,

                        new Object[1], new String[] {X[].class.getName()});

        ClassLoader checkLoader = mbs.getClassLoaderFor(testName);

        if (checkLoader != loader)

            throw new AssertionError("Wrong loader: " + checkLoader);

        mbs.invoke(testName, "ignore", new Object[1],

                   new String[] {Y[].class.getName()});

        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        ObjectOutputStream oout = new ObjectOutputStream(bout);

        oout.writeObject(new Z[0]);

        oout.close();

        byte[] bytes = bout.toByteArray();

        ObjectInputStream oin = mbs.deserialize(testName, bytes);

        Object zarray = oin.readObject();

        String failed = null;

        if (zarray instanceof Z[])

            failed = "read back a real Z[]";

        else if (!zarray.getClass().getName().equals(Z[].class.getName())) {

            failed = "returned object of wrong type: " +

                zarray.getClass().getName();

        } else if (Array.getLength(zarray) != 0)

            failed = "returned array of wrong size: " + Array.getLength(zarray);

        if (failed != null) {

            System.out.println("TEST FAILED: " + failed);

            System.exit(1);

        }

        System.out.println("Test passed");

    }

    public static interface TestMBean {

        public void ignore(Y[] ignored);

    }

    public static class Test implements TestMBean {

        public Test(X[] ignored) {}

        public void ignore(Y[] ignored) {}

    }

    public static class X {}

    public static class Y {}

    public static class Z implements Serializable {}

    public static interface SpyLoaderMBean {}

    /* We originally had this extend MLet but for some reason that

       stopped the bug from happening.  Some side-effect of registering

       the MLet in the MBean server caused it not to fail when asked

       to load Z[].  */

    public static class SpyLoader extends URLClassLoader

            implements SpyLoaderMBean, PrivateClassLoader {

        public SpyLoader(URL[] urls) {

            // important that the parent classloader be null!

            // otherwise we can pick up classes from the classpath

            super(urls, null);

        }

        /*

        public Class loadClass(String name) throws ClassNotFoundException {

            System.out.println("loadClass: " + name);

            return super.loadClass(name);

        }

        public Class loadClass(String name, boolean resolve)

                throws ClassNotFoundException {

            System.out.println("loadClass: " + name + ", " + resolve);

            return super.loadClass(name, resolve);

        }

        */

        public Class findClass(String name) throws ClassNotFoundException {

            System.out.println("findClass: " + name);

            if (false)

                new Throwable().printStackTrace(System.out);

            Class c = super.findClass(name);

            System.out.println(" -> " + name + " (" + c.getClassLoader() + ")");

            return c;

        }

    }

}