1/*
2 * Copyright (c) 2005, 2016, 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/*
25 * @test
26 * @bug 6234795
27 * @summary Rolling of HOUR or HOUR_OF_SET must set the other hour field.
28 */
29
30import java.util.GregorianCalendar;
31import static java.util.Calendar.AM;
32import static java.util.Calendar.AM_PM;
33import static java.util.Calendar.HOUR;
34import static java.util.Calendar.HOUR_OF_DAY;
35import static java.util.Calendar.SEPTEMBER;
36import java.util.Locale;
37import java.util.TimeZone;
38
39public class Bug6234795 {
40    public static void main(String[] args) {
41        testRoll(HOUR);
42        testRoll(HOUR_OF_DAY);
43    }
44
45    static void testRoll(int field) {
46        GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT"), Locale.US);
47        cal.clear();
48        cal.set(2005, SEPTEMBER, 12);
49
50        int otherField = (field == HOUR) ? HOUR_OF_DAY : HOUR;
51        int unit = (field == HOUR) ? 12 : 24;
52        int h;
53        for (h = 0; h <= 72; h++) {
54            int hour = cal.get(otherField);
55            int expected = h % 12;
56            if (hour != expected) {
57                throw new RuntimeException((field == HOUR ? "HOUR" : "HOUR_OF_DAY")
58                                           + "+: h=" + h + ", got " + hour
59                                           + ", expected " + expected);
60            }
61            if (field == HOUR_OF_DAY) {
62                int ampm = cal.get(AM_PM);
63                expected = (h % unit) / 12;
64                if (ampm != expected) {
65                    throw new RuntimeException((field == HOUR ? "HOUR" : "HOUR_OF_DAY")
66                                               + "+: h=" + h + ", got "
67                                               + toString(ampm)
68                                               + ", expected " + toString(expected));
69                }
70            }
71            cal.roll(field, +1);
72        }
73        for (; h >= 0; h--) {
74            int hour = cal.get(otherField);
75            int expected = h % 12;
76            if (hour != expected) {
77                throw new RuntimeException((field == HOUR ? "HOUR" : "HOUR_OF_DAY")
78                                           + "-: h=" + h + ", got " + hour
79                                           + ", expected " + expected);
80            }
81            if (field == HOUR_OF_DAY) {
82                int ampm = cal.get(AM_PM);
83                expected = (h % unit) / 12;
84                if (ampm != expected) {
85                    throw new RuntimeException((field == HOUR ? "HOUR" : "HOUR_OF_DAY")
86                                               + "-: h=" + h + ", got " + toString(ampm)
87                                               + ", expected " + toString(expected));
88                }
89            }
90            cal.roll(field, -1);
91        }
92    }
93
94    static String toString(int ampm) {
95        return ampm == AM ? "AM" : "PM";
96    }
97}
98