1 | /* Basic tests for gmtime. |
2 | Copyright (C) 2021-2022 Free Software Foundation, Inc. |
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 (timer: &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 (timer: &t, tp: &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 (timer: &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 (timer: &t, tp: &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 (timer: &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 (timer: &t, tp: &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> |
125 | |