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/*
* Copyright (c) 2019, 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.
*/
import static org.testng.Assert.assertEquals;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.ZonedDateTime;
import java.time.ZoneId;
import java.util.Date;
import java.util.TimeZone;
import org.testng.annotations.Test;
import org.testng.annotations.DataProvider;
import static org.testng.Assert.assertEquals;
/**
* @test
* @bug 8212970
* @summary Test whether the savings are positive in time zones that have
* negative savings in the source TZ files.
* @run testng NegativeDSTTest
*/
@Test
public class NegativeDSTTest {
private static final TimeZone DUBLIN = TimeZone.getTimeZone("Europe/Dublin");
private static final TimeZone PRAGUE = TimeZone.getTimeZone("Europe/Prague");
private static final TimeZone WINDHOEK = TimeZone.getTimeZone("Africa/Windhoek");
private static final TimeZone CASABLANCA = TimeZone.getTimeZone("Africa/Casablanca");
private static final int ONE_HOUR = 3600_000;
@DataProvider
private Object[][] negativeDST () {
return new Object[][] {
// TimeZone, localDate, offset, isDaylightSavings
// Europe/Dublin for the Rule "Eire"
{DUBLIN, LocalDate.of(1970, 6, 23), ONE_HOUR, true},
{DUBLIN, LocalDate.of(1971, 6, 23), ONE_HOUR, true},
{DUBLIN, LocalDate.of(1971, 11, 1), 0, false},
{DUBLIN, LocalDate.of(2019, 6, 23), ONE_HOUR, true},
{DUBLIN, LocalDate.of(2019, 12, 23), 0, false},
// Europe/Prague which contains fixed negative savings (not a named Rule)
{PRAGUE, LocalDate.of(1946, 9, 30), 2 * ONE_HOUR, true},
{PRAGUE, LocalDate.of(1946, 10, 10), ONE_HOUR, false},
{PRAGUE, LocalDate.of(1946, 12, 3), 0, false},
{PRAGUE, LocalDate.of(1947, 2, 25), ONE_HOUR, false},
{PRAGUE, LocalDate.of(1947, 4, 30), 2 * ONE_HOUR, true},
// Africa/Windhoek for the Rule "Namibia"
{WINDHOEK, LocalDate.of(1994, 3, 23), ONE_HOUR, false},
{WINDHOEK, LocalDate.of(2016, 9, 23), 2 * ONE_HOUR, true},
// Africa/Casablanca for the Rule "Morocco" Defines negative DST till 2037 as of 2019a.
{CASABLANCA, LocalDate.of(1939, 9, 13), ONE_HOUR, true},
{CASABLANCA, LocalDate.of(1939, 11, 20), 0, false},
{CASABLANCA, LocalDate.of(2018, 6, 18), ONE_HOUR, true},
{CASABLANCA, LocalDate.of(2019, 1, 1), ONE_HOUR, true},
{CASABLANCA, LocalDate.of(2019, 5, 6), 0, false},
{CASABLANCA, LocalDate.of(2037, 10, 5), 0, false},
{CASABLANCA, LocalDate.of(2037, 11, 16), ONE_HOUR, true},
{CASABLANCA, LocalDate.of(2038, 11, 1), ONE_HOUR, true},
};
}
@Test(dataProvider="negativeDST")
public void test_NegativeDST(TimeZone tz, LocalDate ld, int offset, boolean isDST) {
Date d = Date.from(Instant.from(ZonedDateTime.of(ld, LocalTime.MIN, tz.toZoneId())));
assertEquals(tz.getOffset(d.getTime()), offset);
assertEquals(tz.inDaylightTime(d), isDST);
}
}
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