--- /dev/null 2019-07-24 14:47:04.000000000 -0700 +++ new/test/jdk/java/time/test/java/time/zone/TestZoneRules.java 2019-07-24 14:47:04.000000000 -0700 @@ -0,0 +1,123 @@ +/* + * 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. + */ + +package test.java.time.zone; + +import static org.testng.Assert.assertEquals; + +import java.time.Instant; +import java.time.LocalDate; +import java.time.LocalDateTime; +import java.time.LocalTime; +import java.time.ZonedDateTime; +import java.time.ZoneId; +import java.time.ZoneOffset; +import java.time.zone.ZoneOffsetTransition; +import java.time.zone.ZoneRules; + +import org.testng.annotations.Test; +import org.testng.annotations.DataProvider; +import static org.testng.Assert.assertEquals; +import static org.testng.Assert.assertTrue; + +/** + * Test ZoneRules, wrt Negative DST. + * + * @bug 8212970 + */ +@Test +public class TestZoneRules { + + private static final ZoneId DUBLIN = ZoneId.of("Europe/Dublin"); + private static final ZoneId PRAGUE = ZoneId.of("Europe/Prague"); + private static final ZoneId WINDHOEK = ZoneId.of("Africa/Windhoek"); + private static final ZoneId CASABLANCA = ZoneId.of("Africa/Casablanca"); + + private static final ZoneId TOKYO = ZoneId.of("Asia/Tokyo"); + private static final LocalTime ONE_AM = LocalTime.of(1, 0); + + @DataProvider + private Object[][] negativeDST () { + return new Object[][] { + // ZoneId, localDate, offset, standard offset, isDaylightSavings + // Europe/Dublin for the Rule "Eire" + {DUBLIN, LocalDate.of(1970, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + {DUBLIN, LocalDate.of(1971, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + {DUBLIN, LocalDate.of(1971, 11, 1), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, + {DUBLIN, LocalDate.of(2019, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + {DUBLIN, LocalDate.of(2019, 12, 23), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, + + // Europe/Prague which contains fixed negative savings (not a named Rule) + {PRAGUE, LocalDate.of(1946, 9, 30), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true}, + {PRAGUE, LocalDate.of(1946, 10, 10), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false}, + {PRAGUE, LocalDate.of(1946, 12, 3), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, + {PRAGUE, LocalDate.of(1947, 2, 25), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false}, + {PRAGUE, LocalDate.of(1947, 4, 30), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true}, + + // Africa/Windhoek for the Rule "Namibia" + {WINDHOEK, LocalDate.of(1994, 3, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false}, + {WINDHOEK, LocalDate.of(2016, 9, 23), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true}, + + // Africa/Casablanca for the Rule "Morocco" Defines negative DST till 2037 as of 2019a. + {CASABLANCA, LocalDate.of(1939, 9, 13), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + {CASABLANCA, LocalDate.of(1939, 11, 20), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, + {CASABLANCA, LocalDate.of(2018, 6, 18), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + {CASABLANCA, LocalDate.of(2019, 1, 1), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + {CASABLANCA, LocalDate.of(2019, 5, 6), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, + {CASABLANCA, LocalDate.of(2037, 10, 5), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, + {CASABLANCA, LocalDate.of(2037, 11, 16), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + {CASABLANCA, LocalDate.of(2038, 11, 1), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, + }; + } + + @DataProvider + private Object[][] transitionBeyondDay() { + return new Object[][] { + // ZoneId, LocalDateTime, beforeOffset, afterOffset + + // Asserts that the rule: + // Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S + // translates to the next day. + {TOKYO, LocalDateTime.of(LocalDate.of(1948, 9, 12), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, + {TOKYO, LocalDateTime.of(LocalDate.of(1949, 9, 11), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, + {TOKYO, LocalDateTime.of(LocalDate.of(1950, 9, 10), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, + {TOKYO, LocalDateTime.of(LocalDate.of(1951, 9, 9), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, + }; + } + + @Test(dataProvider="negativeDST") + public void test_NegativeDST(ZoneId zid, LocalDate ld, ZoneOffset offset, ZoneOffset stdOffset, boolean isDST) { + Instant i = Instant.from(ZonedDateTime.of(ld, LocalTime.MIN, zid)); + ZoneRules zr = zid.getRules(); + assertEquals(zr.getOffset(i), offset); + assertEquals(zr.getStandardOffset(i), stdOffset); + assertEquals(zr.isDaylightSavings(i), isDST); + } + + @Test(dataProvider="transitionBeyondDay") + public void test_TransitionBeyondDay(ZoneId zid, LocalDateTime ldt, ZoneOffset before, ZoneOffset after) { + ZoneOffsetTransition zot = ZoneOffsetTransition.of(ldt, before, after); + ZoneRules zr = zid.getRules(); + assertTrue(zr.getTransitions().contains(zot)); + } +}