1 | /* Basic tests for timegm. |
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 void |
24 | do_test_func (time_t (*func)(struct tm *)) |
25 | { |
26 | { |
27 | struct tm tmg = |
28 | { |
29 | .tm_sec = 0, |
30 | .tm_min = 0, |
31 | .tm_hour = 0, |
32 | .tm_mday = 1, |
33 | .tm_mon = 0, |
34 | .tm_year = 70, |
35 | .tm_wday = 4, |
36 | .tm_yday = 0, |
37 | .tm_isdst = 0 |
38 | }; |
39 | time_t t = func (&tmg); |
40 | TEST_COMPARE (t, 0); |
41 | } |
42 | |
43 | { |
44 | struct tm tmg = |
45 | { |
46 | .tm_sec = 7, |
47 | .tm_min = 14, |
48 | .tm_hour = 3, |
49 | .tm_mday = 19, |
50 | .tm_mon = 0, |
51 | .tm_year = 138, |
52 | .tm_wday = 2, |
53 | .tm_yday = 18, |
54 | .tm_isdst = 0 |
55 | }; |
56 | time_t t = func (&tmg); |
57 | TEST_COMPARE (t, 0x7fffffff); |
58 | } |
59 | |
60 | if (sizeof (time_t) < 8) |
61 | return; |
62 | |
63 | { |
64 | struct tm tmg = |
65 | { |
66 | .tm_sec = 8, |
67 | .tm_min = 14, |
68 | .tm_hour = 3, |
69 | .tm_mday = 19, |
70 | .tm_mon = 0, |
71 | .tm_year = 138, |
72 | .tm_wday = 2, |
73 | .tm_yday = 18, |
74 | .tm_isdst = 0 |
75 | }; |
76 | time_t t = func (&tmg); |
77 | TEST_COMPARE (t, (time_t) 0x80000000ull); |
78 | } |
79 | } |
80 | |
81 | static int |
82 | do_test (void) |
83 | { |
84 | do_test_func (func: timegm); |
85 | |
86 | /* timelocal is an alias to mktime and behaves like timegm with the |
87 | difference that it takes timezone into account. */ |
88 | TEST_VERIFY_EXIT (setenv ("TZ" , ":" , 1) == 0); |
89 | tzset (); |
90 | do_test_func (func: timelocal); |
91 | |
92 | return 0; |
93 | } |
94 | |
95 | #include <support/test-driver.c> |
96 | |