/*

 * Copyright (c) 2007, 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.

 *

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 * questions.

 */

/*

 * @test

 * @bug 6312358

 * @summary Verify that an NPE is thrown by issueing Locale.getInstance() with

 *      any argument being null.

 */

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.util.Locale;

public class bug6312358 {

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

        try {

            // Locale.getInstance is not directly accessible.

            Method getInstanceMethod = Locale.class.getDeclaredMethod(

                "getInstance", String.class, String.class, String.class

            );

            getInstanceMethod.setAccessible(true);

            getInstanceMethod.invoke(null, "null", "GB", "");

            try {

                getInstanceMethod.invoke(null, null, "GB", "");

                throw new RuntimeException("Should NPE with language set to null");

            } catch (InvocationTargetException exc) {

                Throwable cause = exc.getCause();

                if (!(cause instanceof NullPointerException)) {

                    throw new RuntimeException(cause+" is thrown with language set to null");

                }

            }

            getInstanceMethod.invoke(null, "en", "null", "");

            try {

                getInstanceMethod.invoke(null, "en", null, "");

                throw new RuntimeException("Should NPE with country set to null");

            } catch (InvocationTargetException exc) {

                Throwable cause = exc.getCause();

                if (!(cause instanceof NullPointerException)) {

                    throw new RuntimeException(cause+" is thrown with country set to null");

                }

            }

            getInstanceMethod.invoke(null, "en", "GB", "null");

            try {

                getInstanceMethod.invoke(null, "en", "GB", null);

                throw new RuntimeException("Should NPE with variant set to null");

            } catch (InvocationTargetException exc) {

                Throwable cause = exc.getCause();

                if (!(cause instanceof NullPointerException)) {

                    throw new RuntimeException(cause+" is thrown with variant set to null");

                }

            }

        } catch (java.lang.NoSuchMethodException exc) {

            // method is not found.  consider it as a success

        }

    }

}