64 lines
2.1 KiB
Java
64 lines
2.1 KiB
Java
/*
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* Copyright (c) 2004, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 5097350
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* @summary Make sure that TimeZone.getTimeZone returns a clone of a cached TimeZone instance.
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*/
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import java.util.*;
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import java.text.*;
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public class Bug5097350 {
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public static void main(String[] args) {
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String[] tzids = TimeZone.getAvailableIDs();
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List<String> ids = new ArrayList<>(tzids.length + 10);
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ids.addAll(Arrays.asList(tzids));
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// add some custom ids
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ids.add("GMT+1");
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ids.add("GMT-7:00");
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ids.add("GMT+10:20");
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ids.add("GMT-00:00");
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ids.add("GMT+00:00");
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for (String id : ids) {
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test(id);
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}
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}
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private static void test(String id) {
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TimeZone tz1 = TimeZone.getTimeZone(id);
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int offset1 = tz1.getRawOffset();
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tz1.setRawOffset(offset1 + 13 * 60 * 60 * 1000);
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TimeZone tz2 = TimeZone.getTimeZone(id);
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if (tz1 == tz2) {
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throw new RuntimeException("TimeZones are identical: " + id);
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}
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if (offset1 != tz2.getRawOffset()) {
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throw new RuntimeException("Offset changed through aliasing: " + id);
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}
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}
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}
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