timezone/test-tz.c

   1 #include <stdlib.h>
   2 #include <time.h>
   3 #include <string.h>
   4 #include <stdio.h>
   5
   6 struct {
   7   const char *  env;
   8   time_t        expected;
   9 } tests[] = {
  10   {"MST",       832935315},
  11   {"",          832910115},
  12   {":UTC",      832910115},
  13   {"UTC",       832910115},
  14   {"UTC0",      832910115}
  15 };
  16
  17
  18 int
  19 main (int argc, char ** argv)
  20 {
  21   int errors = 0;
  22   struct tm tm;
  23   time_t t;
  24   unsigned int i;
  25
  26   memset (&tm, 0, sizeof (tm));
  27   tm.tm_isdst = 0;
  28   tm.tm_year  = 96;     /* years since 1900 */
  29   tm.tm_mon   = 4;
  30   tm.tm_mday  = 24;
  31   tm.tm_hour  =  3;
  32   tm.tm_min   = 55;
  33   tm.tm_sec   = 15;
  34
  35   for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
  36     {
  37       setenv ("TZ", tests[i].env, 1);
  38       t = mktime (&tm);
  39       if (t != tests[i].expected)
  40         {
  41           printf ("%s: flunked test %u (expected %lu, got %lu)\n",
  42                   argv[0], i, (long) tests[i].expected, (long) t);
  43           ++errors;
  44         }
  45     }
  46   if (errors == 0)
  47     {
  48       puts ("No errors.");
  49       return EXIT_SUCCESS;
  50     }
  51   else
  52     {
  53       printf ("%d errors.\n", errors);
  54       return EXIT_FAILURE;
  55     }
  56 }