/*

 * Copyright (c) 2003, 2004, Oracle and/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

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 */

/**

 * @test

 * @bug 4920005 4882798

 * @summary make sure redefineClasses throws NullPointerException in the right places.

 * @author Robert Field as modified from the code of Gabriel Adauto, Wily Technology

 *

 * @run build NullRedefineClassesTests

 * @run shell MakeJAR.sh redefineAgent

 * @run main/othervm -javaagent:redefineAgent.jar NullRedefineClassesTests NullRedefineClassesTests

 */

import java.lang.instrument.ClassDefinition;

import java.lang.instrument.UnmodifiableClassException;

public class

NullRedefineClassesTests

    extends ASimpleInstrumentationTestCase

{

    /**

     * Constructor for NullRedefineClassesTests.

     * @param name

     */

    public NullRedefineClassesTests(String name) {

        super(name);

    }

    public static void

    main (String[] args) throws Throwable {

        ATestCaseScaffold   test = new NullRedefineClassesTests(args[0]);

        test.runTest();

    }

    protected final void

    doRunTest() throws ClassNotFoundException, UnmodifiableClassException  {

        testNullRedefineClasses();

    }

    public void

    testNullRedefineClasses() throws ClassNotFoundException, UnmodifiableClassException {

        boolean caught;

        // Test that a null argument throws NullPointerException

        caught = false;

        try {

            fInst.redefineClasses(null);

        } catch (NullPointerException npe) {

            caught = true;

        }

        assertTrue(caught);

        // Test that a null element throws NullPointerException

        caught = false;

        try {

            fInst.redefineClasses(new ClassDefinition[]{ null });

        } catch (NullPointerException npe) {

            caught = true;

        }

        assertTrue(caught);

        // Test that a null element amonst others throws NullPointerException

        caught = false;

        ClassDefinition cd = new ClassDefinition(DummyClass.class, new byte[] {1, 2, 3});

        try {

            fInst.redefineClasses(new ClassDefinition[]{ cd, null });

        } catch (NullPointerException npe) {

            caught = true;

        }

        assertTrue(caught);

        // Test that a null class throws NullPointerException

        caught = false;

        try {

            new ClassDefinition(null, new byte[] {1, 2, 3});

        } catch (NullPointerException npe) {

            caught = true;

        }

        assertTrue(caught);

        // Test that a null byte array throws NullPointerException

        caught = false;

        try {

            new ClassDefinition(DummyClass.class, null);

        } catch (NullPointerException npe) {

            caught = true;

        }

        assertTrue(caught);

    }

}