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

 *

 * This code is free software; you can redistribute it and/or modify it

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 *

 * 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.

 *

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/**

 * @test

 * @build ModuleSetAccessibleTest

 * @modules java.base/java.lang:open

 *          java.base/jdk.internal.misc:+open

 * @run testng ModuleSetAccessibleTest

 * @summary Test java.lang.reflect.AccessibleObject with modules

 */

import java.lang.reflect.AccessibleObject;

import java.lang.reflect.Constructor;

import java.lang.reflect.Field;

import java.lang.reflect.InaccessibleObjectException;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.lang.reflect.Module;

import jdk.internal.misc.Unsafe;

import org.testng.annotations.Test;

import static org.testng.Assert.*;

@Test

public class ModuleSetAccessibleTest {

    /**

     * Invoke a private constructor on a public class in an exported package

     */

    public void testPrivateConstructorInExportedPackage() throws Exception {

        Constructor<?> ctor = Unsafe.class.getDeclaredConstructor();

        try {

            ctor.newInstance();

            assertTrue(false);

        } catch (IllegalAccessException expected) { }

        ctor.setAccessible(true);

        Unsafe unsafe = (Unsafe) ctor.newInstance();

    }

    /**

     * Invoke a private method on a public class in an exported package

     */

    public void testPrivateMethodInExportedPackage() throws Exception {

        Method m = Unsafe.class.getDeclaredMethod("throwIllegalAccessError");

        try {

            m.invoke(null);

            assertTrue(false);

        } catch (IllegalAccessException expected) { }

        m.setAccessible(true);

        try {

            m.invoke(null);

            assertTrue(false);

        } catch (InvocationTargetException e) {

            // thrown by throwIllegalAccessError

            assertTrue(e.getCause() instanceof IllegalAccessError);

        }

    }

    /**

     * Access a private field in a public class that is an exported package

     */

    public void testPrivateFieldInExportedPackage() throws Exception {

        Field f = Unsafe.class.getDeclaredField("theUnsafe");

        try {

            f.get(null);

            assertTrue(false);

        } catch (IllegalAccessException expected) { }

        f.setAccessible(true);

        Unsafe unsafe = (Unsafe) f.get(null);

    }

    /**

     * Invoke a public constructor on a public class in a non-exported package

     */

    public void testPublicConstructorInNonExportedPackage() throws Exception {

        Class<?> clazz = Class.forName("sun.security.x509.X500Name");

        Constructor<?> ctor = clazz.getConstructor(String.class);

        try {

            ctor.newInstance("cn=duke");

            assertTrue(false);

        } catch (IllegalAccessException expected) { }

        try {

            ctor.setAccessible(true);

            assertTrue(false);

        } catch (InaccessibleObjectException expected) { }

        ctor.setAccessible(false); // should succeed

    }

    /**

     * Access a public field in a public class that in a non-exported package

     */

    public void testPublicFieldInNonExportedPackage() throws Exception {

        Class<?> clazz = Class.forName("sun.security.x509.X500Name");

        Field f = clazz.getField("SERIALNUMBER_OID");

        try {

            f.get(null);

            assertTrue(false);

        } catch (IllegalAccessException expected) { }

        try {

            f.setAccessible(true);

            assertTrue(false);

        } catch (InaccessibleObjectException expected) { }

        f.setAccessible(false); // should succeed

    }

    /**

     * Test that the Class constructor cannot be make accessible.

     */

    public void testJavaLangClass() throws Exception {

        // non-public constructor

        Constructor<?> ctor

            = Class.class.getDeclaredConstructor(ClassLoader.class, Class.class);

        AccessibleObject[] ctors = { ctor };

        try {

            ctor.setAccessible(true);

            assertTrue(false);

        } catch (SecurityException expected) { }

        try {

            AccessibleObject.setAccessible(ctors, true);

            assertTrue(false);

        } catch (SecurityException expected) { }

        // should succeed

        ctor.setAccessible(false);

        AccessibleObject.setAccessible(ctors, false);

    }

}