/*
 * Copyright (c) 2005, 2017, 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 6282072
 * @summary Make sure that "UTC" is an alias of "Etc/UTC" as defined in the tzdata backward.
 * @modules java.base/sun.util.calendar
 * @compile -XDignore.symbol.file UTCAliasTest.java
 * @run main UTCAliasTest
 */

import java.util.*;
import sun.util.calendar.ZoneInfo;

public class UTCAliasTest {
    public static void main(String[] args) {
        Map<String,String> map = ZoneInfo.getAliasTable();
        String alias = map.get("UTC");
        if (!alias.equals("Etc/UTC")) {
            throw new RuntimeException("got " + alias + ", expected Etc/UTC");
        }
        TimeZone GMT = TimeZone.getTimeZone("GMT");
        TimeZone UTC = TimeZone.getTimeZone("UTC");
        if (!GMT.hasSameRules(UTC)) {
            throw new RuntimeException("GMT and UTC have different rules");
        }
        TimeZone EtcUTC = TimeZone.getTimeZone("Etc/UTC");
        if (!UTC.hasSameRules(EtcUTC)) {
            throw new RuntimeException("UTC and Etc/UTC have different rules");
        }
    }
}