tests/test-gmtime_r.c

   1 /* Test gmtime_r().
   2    Copyright (C) 2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2024.  */
  18
  19 #include <config.h>
  20
  21 /* Specification.  */
  22 #include <time.h>
  23
  24 #include <string.h>
  25
  26 #include "macros.h"
  27
  28 int
  29 main (void)
  30 {
  31   {
  32     time_t t = 1509000003; /* 2017-10-26 06:40:03 */
  33     struct tm tm;
  34     struct tm *result = gmtime_r (&t, &tm);
  35     ASSERT (result == &tm);
  36     ASSERT (result->tm_sec == 3);
  37     ASSERT (result->tm_min == 40);
  38     ASSERT (result->tm_hour == 6);
  39     ASSERT (result->tm_mday == 26);
  40     ASSERT (result->tm_mon == 10 - 1);
  41     ASSERT (result->tm_year == 2017 - 1900);
  42     ASSERT (result->tm_wday == 4);
  43     ASSERT (result->tm_yday == 298);
  44     ASSERT (result->tm_isdst == 0);
  45 #if HAVE_STRUCT_TM_TM_GMTOFF /* glibc, musl, macOS, FreeBSD, NetBSD, OpenBSD, Minix, Cygwin, Android */
  46     ASSERT (result->tm_gmtoff == 0);
  47 #endif
  48 #if HAVE_STRUCT_TM_TM_ZONE /* glibc, musl, macOS, FreeBSD, NetBSD, OpenBSD, Minix, Cygwin, Android */
  49     printf ("tm_zone = %s\n", result->tm_zone == NULL ? "(null)" : result->tm_zone);
  50     ASSERT (strcmp (result->tm_zone, "GMT") == 0 /* glibc, NetBSD, OpenBSD, Minix, Cygwin, Android */
  51             || strcmp (result->tm_zone, "UTC") == 0 /* musl, macOS, FreeBSD */);
  52 #endif
  53   }
  54
  55   return test_exit_status;
  56 }