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96f98cef | 1 | /* Basic tests for gmtime. |
6d7e8eda | 2 | Copyright (C) 2021-2023 Free Software Foundation, Inc. |
96f98cef AZ |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <https://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <time.h> | |
20 | #include <stdlib.h> | |
21 | #include <support/check.h> | |
22 | ||
23 | static int | |
24 | do_test (void) | |
25 | { | |
26 | /* Check if the epoch time can be converted. */ | |
27 | { | |
28 | time_t t = 0; | |
29 | struct tm *tmg = gmtime (&t); | |
30 | TEST_COMPARE (tmg->tm_sec, 0); | |
31 | TEST_COMPARE (tmg->tm_min, 0); | |
32 | TEST_COMPARE (tmg->tm_hour, 0); | |
33 | TEST_COMPARE (tmg->tm_mday, 1); | |
34 | TEST_COMPARE (tmg->tm_mon, 0); | |
35 | TEST_COMPARE (tmg->tm_year, 70); | |
36 | TEST_COMPARE (tmg->tm_wday, 4); | |
37 | TEST_COMPARE (tmg->tm_yday, 0); | |
38 | TEST_COMPARE (tmg->tm_isdst, 0); | |
39 | } | |
40 | { | |
41 | /* Same as before but with gmtime_r. */ | |
42 | time_t t = 0; | |
43 | struct tm tms; | |
44 | struct tm *tmg = gmtime_r (&t, &tms); | |
45 | TEST_VERIFY (tmg == &tms); | |
46 | TEST_COMPARE (tmg->tm_sec, 0); | |
47 | TEST_COMPARE (tmg->tm_min, 0); | |
48 | TEST_COMPARE (tmg->tm_hour, 0); | |
49 | TEST_COMPARE (tmg->tm_mday, 1); | |
50 | TEST_COMPARE (tmg->tm_mon, 0); | |
51 | TEST_COMPARE (tmg->tm_year, 70); | |
52 | TEST_COMPARE (tmg->tm_wday, 4); | |
53 | TEST_COMPARE (tmg->tm_yday, 0); | |
54 | TEST_COMPARE (tmg->tm_isdst, 0); | |
55 | } | |
56 | ||
57 | /* Check if the max time value for 32 bit time_t can be converted. */ | |
58 | { | |
59 | time_t t = 0x7fffffff; | |
60 | struct tm *tmg = gmtime (&t); | |
61 | TEST_COMPARE (tmg->tm_sec, 7); | |
62 | TEST_COMPARE (tmg->tm_min, 14); | |
63 | TEST_COMPARE (tmg->tm_hour, 3); | |
64 | TEST_COMPARE (tmg->tm_mday, 19); | |
65 | TEST_COMPARE (tmg->tm_mon, 0); | |
66 | TEST_COMPARE (tmg->tm_year, 138); | |
67 | TEST_COMPARE (tmg->tm_wday, 2); | |
68 | TEST_COMPARE (tmg->tm_yday, 18); | |
69 | TEST_COMPARE (tmg->tm_isdst, 0); | |
70 | } | |
71 | { | |
72 | /* Same as before but with ctime_r. */ | |
73 | time_t t = 0x7fffffff; | |
74 | struct tm tms; | |
75 | struct tm *tmg = gmtime_r (&t, &tms); | |
76 | TEST_VERIFY (tmg == &tms); | |
77 | TEST_COMPARE (tmg->tm_sec, 7); | |
78 | TEST_COMPARE (tmg->tm_min, 14); | |
79 | TEST_COMPARE (tmg->tm_hour, 3); | |
80 | TEST_COMPARE (tmg->tm_mday, 19); | |
81 | TEST_COMPARE (tmg->tm_mon, 0); | |
82 | TEST_COMPARE (tmg->tm_year, 138); | |
83 | TEST_COMPARE (tmg->tm_wday, 2); | |
84 | TEST_COMPARE (tmg->tm_yday, 18); | |
85 | TEST_COMPARE (tmg->tm_isdst, 0); | |
86 | } | |
87 | ||
88 | if (sizeof (time_t) < 8) | |
89 | return 0; | |
90 | ||
91 | { | |
92 | time_t t = (time_t) 0x80000000ull; | |
93 | struct tm *tmg = gmtime (&t); | |
94 | TEST_COMPARE (tmg->tm_sec, 8); | |
95 | TEST_COMPARE (tmg->tm_min, 14); | |
96 | TEST_COMPARE (tmg->tm_hour, 3); | |
97 | TEST_COMPARE (tmg->tm_mday, 19); | |
98 | TEST_COMPARE (tmg->tm_mon, 0); | |
99 | TEST_COMPARE (tmg->tm_year, 138); | |
100 | TEST_COMPARE (tmg->tm_wday, 2); | |
101 | TEST_COMPARE (tmg->tm_yday, 18); | |
102 | TEST_COMPARE (tmg->tm_isdst, 0); | |
103 | } | |
104 | ||
105 | { | |
106 | time_t t = (time_t) 0x80000000ull; | |
107 | struct tm tms; | |
108 | struct tm *tmg = gmtime_r (&t, &tms); | |
109 | TEST_VERIFY (tmg == &tms); | |
110 | TEST_COMPARE (tmg->tm_sec, 8); | |
111 | TEST_COMPARE (tmg->tm_min, 14); | |
112 | TEST_COMPARE (tmg->tm_hour, 3); | |
113 | TEST_COMPARE (tmg->tm_mday, 19); | |
114 | TEST_COMPARE (tmg->tm_mon, 0); | |
115 | TEST_COMPARE (tmg->tm_year, 138); | |
116 | TEST_COMPARE (tmg->tm_wday, 2); | |
117 | TEST_COMPARE (tmg->tm_yday, 18); | |
118 | TEST_COMPARE (tmg->tm_isdst, 0); | |
119 | } | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | #include <support/test-driver.c> |