1 /* 2 * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package test.java.time.zone; 25 26 import java.time.DayOfWeek; 27 import java.time.Duration; 28 import java.time.Instant; 29 import java.time.LocalDate; 30 import java.time.LocalDateTime; 31 import java.time.LocalTime; 32 import java.time.Month; 33 import java.time.Year; 34 import java.time.ZonedDateTime; 35 import java.time.ZoneId; 36 import java.time.ZoneOffset; 37 import java.time.zone.ZoneOffsetTransition; 38 import java.time.zone.ZoneOffsetTransitionRule; 39 import java.time.zone.ZoneRules; 40 import java.util.Arrays; 41 import java.util.Collections; 42 43 import org.testng.annotations.Test; 44 import org.testng.annotations.DataProvider; 45 import static org.testng.Assert.assertEquals; 46 import static org.testng.Assert.assertTrue; 47 48 /** 49 * @summary Tests for ZoneRules class. 50 * 51 * @bug 8212970 8236903 8239836 52 */ 53 @Test 54 public class TestZoneRules { 55 56 private static final ZoneId DUBLIN = ZoneId.of("Europe/Dublin"); 57 private static final ZoneId PRAGUE = ZoneId.of("Europe/Prague"); 58 private static final ZoneId WINDHOEK = ZoneId.of("Africa/Windhoek"); 59 private static final ZoneId CASABLANCA = ZoneId.of("Africa/Casablanca"); 60 61 private static final ZoneId TOKYO = ZoneId.of("Asia/Tokyo"); 62 private static final LocalTime ONE_AM = LocalTime.of(1, 0); 63 64 @DataProvider 65 private Object[][] negativeDST () { 66 return new Object[][] { 67 // ZoneId, localDate, offset, standard offset, isDaylightSavings 68 // Europe/Dublin for the Rule "Eire" 69 {DUBLIN, LocalDate.of(1970, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 70 {DUBLIN, LocalDate.of(1971, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 71 {DUBLIN, LocalDate.of(1971, 11, 1), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, 72 {DUBLIN, LocalDate.of(2019, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 73 {DUBLIN, LocalDate.of(2019, 12, 23), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, 74 75 // Europe/Prague which contains fixed negative savings (not a named Rule) 76 {PRAGUE, LocalDate.of(1946, 9, 30), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true}, 77 {PRAGUE, LocalDate.of(1946, 10, 10), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false}, 78 {PRAGUE, LocalDate.of(1946, 12, 3), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, 79 {PRAGUE, LocalDate.of(1947, 2, 25), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false}, 80 {PRAGUE, LocalDate.of(1947, 4, 30), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true}, 81 82 // Africa/Windhoek for the Rule "Namibia" 83 {WINDHOEK, LocalDate.of(1994, 3, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false}, 84 {WINDHOEK, LocalDate.of(2016, 9, 23), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true}, 85 86 // Africa/Casablanca for the Rule "Morocco" Defines negative DST till 2037 as of 2019a. 87 {CASABLANCA, LocalDate.of(1939, 9, 13), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 88 {CASABLANCA, LocalDate.of(1939, 11, 20), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, 89 {CASABLANCA, LocalDate.of(2018, 6, 18), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 90 {CASABLANCA, LocalDate.of(2019, 1, 1), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 91 {CASABLANCA, LocalDate.of(2019, 5, 6), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, 92 {CASABLANCA, LocalDate.of(2037, 10, 5), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false}, 93 {CASABLANCA, LocalDate.of(2037, 11, 16), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 94 {CASABLANCA, LocalDate.of(2038, 11, 1), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true}, 95 }; 96 } 97 98 @DataProvider 99 private Object[][] transitionBeyondDay() { 100 return new Object[][] { 101 // ZoneId, LocalDateTime, beforeOffset, afterOffset 102 103 // Asserts that the rule: 104 // Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S 105 // translates to the next day. 106 {TOKYO, LocalDateTime.of(LocalDate.of(1948, 9, 12), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, 107 {TOKYO, LocalDateTime.of(LocalDate.of(1949, 9, 11), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, 108 {TOKYO, LocalDateTime.of(LocalDate.of(1950, 9, 10), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, 109 {TOKYO, LocalDateTime.of(LocalDate.of(1951, 9, 9), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)}, 110 }; 111 } 112 113 @DataProvider 114 private Object[][] emptyTransitionList() { 115 return new Object[][] { 116 // days, offset, std offset, savings, isDST 117 {7, 1, 2, -1, true}, 118 {-7, 1, 1, 0, false}, 119 }; 120 } 121 122 /** 123 * Test ZoneRules whether the savings are positive in time zones that have 124 * negative savings in the source TZ files. 125 * @bug 8212970 126 */ 127 @Test(dataProvider="negativeDST") 128 public void test_NegativeDST(ZoneId zid, LocalDate ld, ZoneOffset offset, ZoneOffset stdOffset, boolean isDST) { 129 Instant i = Instant.from(ZonedDateTime.of(ld, LocalTime.MIN, zid)); 130 ZoneRules zr = zid.getRules(); 131 assertEquals(zr.getOffset(i), offset); 132 assertEquals(zr.getStandardOffset(i), stdOffset); 133 assertEquals(zr.isDaylightSavings(i), isDST); 134 } 135 136 /** 137 * Check the transition cutover time beyond 24:00, which should translate into the next day. 138 * @bug 8212970 139 */ 140 @Test(dataProvider="transitionBeyondDay") 141 public void test_TransitionBeyondDay(ZoneId zid, LocalDateTime ldt, ZoneOffset before, ZoneOffset after) { 142 ZoneOffsetTransition zot = ZoneOffsetTransition.of(ldt, before, after); 143 ZoneRules zr = zid.getRules(); 144 assertTrue(zr.getTransitions().contains(zot)); 145 } 146 147 /** 148 * Make sure ZoneRules.findYear() won't throw out-of-range DateTimeException for 149 * year calculation. 150 * @bug 8236903 151 */ 152 @Test 153 public void test_TransitionLastRuleYear() { 154 Instant maxLocalDateTime = LocalDateTime.of(Year.MAX_VALUE, 155 12, 156 31, 157 23, 158 59, 159 59, 160 999999999).toInstant(ZoneOffset.UTC); 161 ZoneOffset offsetZero = ZoneOffset.ofHours(0); 162 ZoneOffset offsetPlusOneHour = ZoneOffset.ofHours(1); 163 ZoneRules zoneRulesA = ZoneRules.of(offsetPlusOneHour); 164 ZoneOffsetTransition transition = ZoneOffsetTransition.of(LocalDateTime.ofEpochSecond(0, 0, offsetZero), 165 offsetZero, 166 offsetPlusOneHour); 167 ZoneOffsetTransitionRule transitionRule = ZoneOffsetTransitionRule.of(Month.JANUARY, 168 1, 169 DayOfWeek.SUNDAY, 170 LocalTime.MIDNIGHT, 171 true, 172 ZoneOffsetTransitionRule.TimeDefinition.STANDARD, 173 offsetZero, 174 offsetZero, 175 offsetPlusOneHour); 176 ZoneRules zoneRulesB = ZoneRules.of(offsetZero, 177 offsetZero, 178 Collections.singletonList(transition), 179 Collections.singletonList(transition), 180 Collections.singletonList(transitionRule)); 181 ZoneOffset offsetA = zoneRulesA.getOffset(maxLocalDateTime); 182 ZoneOffset offsetB = zoneRulesB.getOffset(maxLocalDateTime); 183 assertEquals(offsetA, offsetB); 184 } 185 186 /** 187 * Tests whether empty "transitionList" is correctly interpreted. 188 * @bug 8239836 189 */ 190 @Test(dataProvider="emptyTransitionList") 191 public void test_EmptyTransitionList(int days, int offset, int stdOffset, int savings, boolean isDST) { 192 LocalDateTime transitionDay = LocalDateTime.of(2020, 1, 1, 2, 0); 193 Instant testDay = transitionDay.plusDays(days).toInstant(ZoneOffset.UTC); 194 ZoneOffsetTransition trans = ZoneOffsetTransition.of( 195 transitionDay, 196 ZoneOffset.ofHours(1), 197 ZoneOffset.ofHours(2)); 198 ZoneRules rules = ZoneRules.of(ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), 199 Arrays.asList(trans), 200 Collections.emptyList(), Collections.emptyList()); 201 202 assertEquals(rules.getOffset(testDay), ZoneOffset.ofHours(offset)); 203 assertEquals(rules.getStandardOffset(testDay), ZoneOffset.ofHours(stdOffset)); 204 assertEquals(rules.getDaylightSavings(testDay), Duration.ofHours(savings)); 205 assertEquals(rules.isDaylightSavings(testDay), isDST); 206 assertTrue(!rules.isFixedOffset()); 207 } 208 }