test/jdk/java/text/Format/DateFormat/DateFormatSymbolsCloneTest.java

/*
 * Copyright (c) 2016, 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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 */

/*
 * @test
 * @bug 8151431
 * @summary Make sure that clone() of a DateFormatSymbols subclass is not
 *          called from DateFormatSymbols constructor.
 */
import java.text.DateFormatSymbols;

@SuppressWarnings("serial")
public class DateFormatSymbolsCloneTest extends DateFormatSymbols {
    private int value;

    public DateFormatSymbolsCloneTest() {
        value = 1;
    }

    @Override
    public Object clone() {
        if (this.value == 0) {
            throw new RuntimeException("clone() should not be called from a DateFormatSymbols constructor");
        }
        return super.clone();
    }

    public static void main(String[] args) {
        new DateFormatSymbolsCloneTest();
    }
}