98 lines
4.3 KiB
Java
98 lines
4.3 KiB
Java
/*
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* Copyright (c) 2019, 2024, 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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import static org.testng.Assert.assertEquals;
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import java.time.Instant;
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import java.time.LocalDate;
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import java.time.LocalTime;
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import java.time.ZonedDateTime;
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import java.time.ZoneId;
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import java.util.Date;
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import java.util.TimeZone;
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import org.testng.annotations.Test;
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import org.testng.annotations.DataProvider;
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import static org.testng.Assert.assertEquals;
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/**
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* @test
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* @bug 8212970 8324065
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* @summary Test whether the savings are positive in time zones that have
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* negative savings in the source TZ files.
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* @run testng NegativeDSTTest
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*/
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@Test
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public class NegativeDSTTest {
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private static final TimeZone DUBLIN = TimeZone.getTimeZone("Europe/Dublin");
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private static final TimeZone PRAGUE = TimeZone.getTimeZone("Europe/Prague");
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private static final TimeZone WINDHOEK = TimeZone.getTimeZone("Africa/Windhoek");
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private static final TimeZone CASABLANCA = TimeZone.getTimeZone("Africa/Casablanca");
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private static final int ONE_HOUR = 3600_000;
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@DataProvider
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private Object[][] negativeDST () {
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return new Object[][] {
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// TimeZone, localDate, offset, isDaylightSavings
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// Europe/Dublin for the Rule "Eire"
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{DUBLIN, LocalDate.of(1970, 6, 23), ONE_HOUR, true},
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{DUBLIN, LocalDate.of(1971, 6, 23), ONE_HOUR, true},
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{DUBLIN, LocalDate.of(1971, 11, 1), 0, false},
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{DUBLIN, LocalDate.of(2019, 6, 23), ONE_HOUR, true},
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{DUBLIN, LocalDate.of(2019, 12, 23), 0, false},
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// Europe/Prague which contains fixed negative savings (not a named Rule)
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{PRAGUE, LocalDate.of(1946, 9, 30), 2 * ONE_HOUR, true},
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{PRAGUE, LocalDate.of(1946, 10, 10), ONE_HOUR, false},
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{PRAGUE, LocalDate.of(1946, 12, 3), 0, false},
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{PRAGUE, LocalDate.of(1947, 2, 25), ONE_HOUR, false},
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{PRAGUE, LocalDate.of(1947, 4, 30), 2 * ONE_HOUR, true},
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// Africa/Windhoek for the Rule "Namibia"
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{WINDHOEK, LocalDate.of(1994, 3, 23), ONE_HOUR, false},
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{WINDHOEK, LocalDate.of(2016, 9, 23), 2 * ONE_HOUR, true},
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// Africa/Casablanca for the Rule "Morocco" Defines negative DST till 2037 as of 2019a.
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{CASABLANCA, LocalDate.of(1939, 9, 13), ONE_HOUR, true},
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{CASABLANCA, LocalDate.of(1939, 11, 20), 0, false},
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{CASABLANCA, LocalDate.of(2018, 6, 18), ONE_HOUR, true},
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{CASABLANCA, LocalDate.of(2019, 1, 1), ONE_HOUR, true},
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{CASABLANCA, LocalDate.of(2019, 5, 6), 0, false},
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{CASABLANCA, LocalDate.of(2037, 10, 5), 0, false},
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{CASABLANCA, LocalDate.of(2037, 11, 16), ONE_HOUR, true},
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{CASABLANCA, LocalDate.of(2038, 9, 27), 0, false},
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{CASABLANCA, LocalDate.of(2038, 11, 1), ONE_HOUR, true},
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{CASABLANCA, LocalDate.of(2087, 3, 31), 0, false},
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{CASABLANCA, LocalDate.of(2087, 5, 12), ONE_HOUR, true},
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};
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}
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@Test(dataProvider="negativeDST")
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public void test_NegativeDST(TimeZone tz, LocalDate ld, int offset, boolean isDST) {
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Date d = Date.from(Instant.from(ZonedDateTime.of(ld, LocalTime.MIN, tz.toZoneId())));
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assertEquals(tz.getOffset(d.getTime()), offset);
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assertEquals(tz.inDaylightTime(d), isDST);
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}
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}
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