1 /*
2 * Copyright (c) 2019, 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 static org.testng.Assert.assertEquals;
27
28 import java.time.Instant;
29 import java.time.LocalDate;
30 import java.time.LocalDateTime;
31 import java.time.LocalTime;
32 import java.time.ZonedDateTime;
33 import java.time.ZoneId;
34 import java.time.ZoneOffset;
35 import java.time.zone.ZoneOffsetTransition;
36 import java.time.zone.ZoneRules;
37
38 import org.testng.annotations.Test;
39 import org.testng.annotations.DataProvider;
40 import static org.testng.Assert.assertEquals;
41 import static org.testng.Assert.assertTrue;
42
43 /**
44 * Test ZoneRules, wrt Negative DST.
45 *
46 * @bug 8212970
47 */
48 @Test
49 public class TestZoneRules {
50
51 private static final ZoneId DUBLIN = ZoneId.of("Europe/Dublin");
52 private static final ZoneId PRAGUE = ZoneId.of("Europe/Prague");
53 private static final ZoneId WINDHOEK = ZoneId.of("Africa/Windhoek");
54 private static final ZoneId CASABLANCA = ZoneId.of("Africa/Casablanca");
55
56 private static final ZoneId TOKYO = ZoneId.of("Asia/Tokyo");
57 private static final LocalTime ONE_AM = LocalTime.of(1, 0);
58
59 @DataProvider
60 private Object[][] negativeDST () {
61 return new Object[][] {
62 // ZoneId, localDate, offset, standard offset, isDaylightSavings
63 // Europe/Dublin for the Rule "Eire"
64 {DUBLIN, LocalDate.of(1970, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
65 {DUBLIN, LocalDate.of(1971, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
66 {DUBLIN, LocalDate.of(1971, 11, 1), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false},
67 {DUBLIN, LocalDate.of(2019, 6, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
68 {DUBLIN, LocalDate.of(2019, 12, 23), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false},
69
70 // Europe/Prague which contains fixed negative savings (not a named Rule)
71 {PRAGUE, LocalDate.of(1946, 9, 30), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true},
72 {PRAGUE, LocalDate.of(1946, 10, 10), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false},
73 {PRAGUE, LocalDate.of(1946, 12, 3), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false},
74 {PRAGUE, LocalDate.of(1947, 2, 25), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false},
75 {PRAGUE, LocalDate.of(1947, 4, 30), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true},
76
77 // Africa/Windhoek for the Rule "Namibia"
78 {WINDHOEK, LocalDate.of(1994, 3, 23), ZoneOffset.ofHours(1), ZoneOffset.ofHours(1), false},
79 {WINDHOEK, LocalDate.of(2016, 9, 23), ZoneOffset.ofHours(2), ZoneOffset.ofHours(1), true},
80
81 // Africa/Casablanca for the Rule "Morocco" Defines negative DST till 2037 as of 2019a.
82 {CASABLANCA, LocalDate.of(1939, 9, 13), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
83 {CASABLANCA, LocalDate.of(1939, 11, 20), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false},
84 {CASABLANCA, LocalDate.of(2018, 6, 18), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
85 {CASABLANCA, LocalDate.of(2019, 1, 1), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
86 {CASABLANCA, LocalDate.of(2019, 5, 6), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false},
87 {CASABLANCA, LocalDate.of(2037, 10, 5), ZoneOffset.ofHours(0), ZoneOffset.ofHours(0), false},
88 {CASABLANCA, LocalDate.of(2037, 11, 16), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
89 {CASABLANCA, LocalDate.of(2038, 11, 1), ZoneOffset.ofHours(1), ZoneOffset.ofHours(0), true},
90 };
91 }
92
93 @DataProvider
94 private Object[][] transitionBeyondDay() {
95 return new Object[][] {
96 // ZoneId, LocalDateTime, beforeOffset, afterOffset
97
98 // Asserts that the rule:
99 // Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S
100 // translates to the next day.
101 {TOKYO, LocalDateTime.of(LocalDate.of(1948, 9, 12), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)},
102 {TOKYO, LocalDateTime.of(LocalDate.of(1949, 9, 11), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)},
103 {TOKYO, LocalDateTime.of(LocalDate.of(1950, 9, 10), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)},
104 {TOKYO, LocalDateTime.of(LocalDate.of(1951, 9, 9), ONE_AM), ZoneOffset.ofHours(10), ZoneOffset.ofHours(9)},
105 };
106 }
107
108 @Test(dataProvider="negativeDST")
109 public void test_NegativeDST(ZoneId zid, LocalDate ld, ZoneOffset offset, ZoneOffset stdOffset, boolean isDST) {
110 Instant i = Instant.from(ZonedDateTime.of(ld, LocalTime.MIN, zid));
111 ZoneRules zr = zid.getRules();
112 assertEquals(zr.getOffset(i), offset);
113 assertEquals(zr.getStandardOffset(i), stdOffset);
114 assertEquals(zr.isDaylightSavings(i), isDST);
115 }
116
117 @Test(dataProvider="transitionBeyondDay")
118 public void test_TransitionBeyondDay(ZoneId zid, LocalDateTime ldt, ZoneOffset before, ZoneOffset after) {
119 ZoneOffsetTransition zot = ZoneOffsetTransition.of(ldt, before, after);
120 ZoneRules zr = zid.getRules();
121 assertTrue(zr.getTransitions().contains(zot));
122 }
123 }