timezone/tst-timezone.c

   1 /* Copyright (C) 1998 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <time.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 int failed = 0;
  27
  28 struct test_times
  29 {
  30   const char *name;
  31   int daylight;
  32   int timezone;
  33   const char *tzname[2];
  34 };
  35
  36 static const struct test_times tests[] =
  37 {
  38   { "Europe/Berlin", 1, -3600, { "CET", "CEST" }},
  39   { "Universal", 0, 0, {"UTC", "UTC" }},
  40   { "Australia/Melbourne", 1, -36000, { "EST", "EST" }},
  41   { "America/Sao_Paulo", 1, 10800, {"EST", "EDT" }},
  42   { "America/Los_Angeles", 1, 28800, {"PST", "PDT" }},
  43   { NULL, 0, 0 }
  44 };
  45
  46
  47 void
  48 print_tzvars (void)
  49 {
  50   printf ("tzname[0]: %s\n", tzname[0]);
  51   printf ("tzname[1]: %s\n", tzname[1]);
  52   printf ("daylight: %d\n", daylight);
  53   printf ("timezone: %ld\n", timezone);
  54 }
  55
  56
  57 void
  58 check_tzvars (const char *name, int dayl, int timez, const char *const tznam[])
  59 {
  60   int i;
  61
  62   if (daylight != dayl)
  63     {
  64       printf ("Timezone: %s, daylight is: %d but should be: %d\n",
  65               name, daylight, dayl);
  66       ++failed;
  67     }
  68   if (timezone != timez)
  69     {
  70       printf ("Timezone: %s, timezone is: %ld but should be: %d\n",
  71               name, timezone, timez);
  72       ++failed;
  73     }
  74   for (i = 0; i <= 1; ++i)
  75     if (strcmp (tzname[i], tznam[i]) != 0)
  76       {
  77         printf ("Timezone: %s, tzname[%d] is: %s but should be: %s\n",
  78                 name, i, tzname[i], tznam[i]);
  79         ++failed;
  80       }
  81 }
  82
  83
  84 int
  85 main (int argc, char ** argv)
  86 {
  87   time_t t;
  88   const struct test_times *pt;
  89   char buf[BUFSIZ];
  90
  91   /* This should be: Thu May 14 18:02:16 1998.  */
  92   t = 895194136;
  93   printf ("We use this date: %s\n", ctime (&t));
  94
  95   for (pt = tests; pt->name != NULL; ++pt)
  96     {
  97       /* Start with a known state */
  98       printf ("Checking timezone %s\n", pt->name);
  99       sprintf (buf, "TZ=%s", pt->name);
 100       if (putenv (buf))
 101         {
 102           puts ("putenv failed.");
 103           failed = 1;
 104         }
 105       tzset ();
 106       print_tzvars ();
 107       check_tzvars (pt->name, pt->daylight, pt->timezone, pt->tzname);
 108
 109       /* calling localtime shouldn't make a difference */
 110       localtime (&t);
 111       print_tzvars ();
 112       check_tzvars (pt->name, pt->daylight, pt->timezone, pt->tzname);
 113     }
 114
 115   return failed ? EXIT_FAILURE : EXIT_SUCCESS;
 116 }