tests/test-posixtm.c

   1 /* Test that posixtime works as required.
   2    Copyright (C) 2009-2020 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 Jim Meyering.  */
  18
  19 #include <config.h>
  20
  21 #include "posixtm.h"
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <stdint.h>
  27 #include <time.h>
  28
  29 #include "intprops.h"
  30 #include "macros.h"
  31
  32 struct posixtm_test
  33 {
  34   char const *in;
  35   unsigned int syntax_bits;
  36   bool valid;
  37   int_least64_t t_expected;
  38 };
  39
  40 /* Test mainly with syntax_bits == LY.  */
  41 enum { LY = PDS_CENTURY | PDS_SECONDS };
  42
  43 static struct posixtm_test const T[] =
  44   {
  45     /* no year specified; cross-check via another posixtime call */
  46     { "12131415.16",     LY, 1,            0}, /* ??? Dec 13 14:15:16 ???? */
  47     { "12131415",        LY, 1,            0}, /* ??? Dec 13 14:15:00 ???? */
  48
  49     /* These two tests fail on 64-bit Solaris up through at least
  50        Solaris 10, which is off by one day for timestamps before
  51        0001-01-01 00:00:00 UTC.  */
  52     { "000001010000.00", LY, 1,
  53                       - INT64_C (62167219200)},/* Sat Jan  1 00:00:00 0    */
  54     { "000012312359.59", LY, 1,
  55                       - INT64_C (62135596801)},/* Fri Dec 31 23:59:59 0    */
  56
  57     { "000101010000.00", LY, 1,
  58                       - INT64_C (62135596800)},/* Sat Jan  1 00:00:00 1    */
  59     { "190112132045.51", LY, 1,
  60                        - INT64_C (2147483649)},/* Fri Dec 13 20:45:51 1901 */
  61     { "190112132045.52", LY, 1,
  62                        - INT64_C (2147483648)},/* Fri Dec 13 20:45:52 1901 */
  63     { "190112132045.53", LY, 1,  -2147483647}, /* Fri Dec 13 20:45:53 1901 */
  64     { "190112132046.52", LY, 1,  -2147483588}, /* Fri Dec 13 20:46:52 1901 */
  65     { "190112132145.52", LY, 1,  -2147480048}, /* Fri Dec 13 21:45:52 1901 */
  66     { "190112142045.52", LY, 1,  -2147397248}, /* Sat Dec 14 20:45:52 1901 */
  67     { "190201132045.52", LY, 1,  -2144805248}, /* Mon Jan 13 20:45:52 1902 */
  68     { "196912312359.59", LY, 1,           -1}, /* Wed Dec 31 23:59:59 1969 */
  69     { "197001010000.00", LY, 1,            0}, /* Thu Jan  1 00:00:00 1970 */
  70     { "197001010000.01", LY, 1,            1}, /* Thu Jan  1 00:00:01 1970 */
  71     { "197001010001.00", LY, 1,           60}, /* Thu Jan  1 00:01:00 1970 */
  72     { "197001010000.60", LY, 1,           60}, /* Thu Jan  1 00:01:00 1970 */
  73     { "197001010100.00", LY, 1,         3600}, /* Thu Jan  1 01:00:00 1970 */
  74     { "197001020000.00", LY, 1,        86400}, /* Fri Jan  2 00:00:00 1970 */
  75     { "197002010000.00", LY, 1,      2678400}, /* Sun Feb  1 00:00:00 1970 */
  76     { "197101010000.00", LY, 1,     31536000}, /* Fri Jan  1 00:00:00 1971 */
  77     { "197001000000.00", LY, 0,            0}, /* -- */
  78     { "197000010000.00", LY, 0,            0}, /* -- */
  79     { "197001010060.00", LY, 0,            0}, /* -- */
  80     { "197001012400.00", LY, 0,            0}, /* -- */
  81     { "197001320000.00", LY, 0,            0}, /* -- */
  82     { "197013010000.00", LY, 0,            0}, /* -- */
  83     { "203801190314.06", LY, 1,   2147483646}, /* Tue Jan 19 03:14:06 2038 */
  84     { "203801190314.07", LY, 1,   2147483647}, /* Tue Jan 19 03:14:07 2038 */
  85     { "203801190314.08", LY, 1,
  86                        INT64_C (  2147483648)},/* Tue Jan 19 03:14:08 2038 */
  87     { "999912312359.59", LY, 1,
  88                        INT64_C (253402300799)},/* Fri Dec 31 23:59:59 9999 */
  89     { "1112131415",      LY, 1,   1323785700}, /* Tue Dec 13 14:15:00 2011 */
  90     { "1112131415.16",   LY, 1,   1323785716}, /* Tue Dec 13 14:15:16 2011 */
  91     { "201112131415.16", LY, 1,   1323785716}, /* Tue Dec 13 14:15:16 2011 */
  92     { "191112131415.16", LY, 1,  -1831974284}, /* Wed Dec 13 14:15:16 1911 */
  93     { "203712131415.16", LY, 1,   2144326516}, /* Sun Dec 13 14:15:16 2037 */
  94     { "3712131415.16",   LY, 1,   2144326516}, /* Sun Dec 13 14:15:16 2037 */
  95     { "6812131415.16",   LY, 1,
  96                        INT64_C (  3122633716)},/* Thu Dec 13 14:15:16 2068 */
  97     { "6912131415.16",   LY, 1,     -1590284}, /* Sat Dec 13 14:15:16 1969 */
  98     { "7012131415.16",   LY, 1,     29945716}, /* Sun Dec 13 14:15:16 1970 */
  99     { "1213141599",      PDS_TRAILING_YEAR,
 100                              1,    945094500}, /* Mon Dec 13 14:15:00 1999 */
 101     { "1213141500",      PDS_TRAILING_YEAR,
 102                              1,    976716900}, /* Wed Dec 13 14:15:00 2000 */
 103     { NULL,               0, 0,            0}
 104   };
 105
 106 int
 107 main (void)
 108 {
 109   unsigned int i;
 110   int fail = 0;
 111   char curr_year_str[30];
 112   struct tm *tm;
 113   time_t t_now;
 114   int err;
 115   size_t n_bytes;
 116
 117   /* The above test data requires Universal Time, e.g., TZ="UTC0".  */
 118   err = setenv ("TZ", "UTC0", 1);
 119   ASSERT (err == 0);
 120
 121   t_now = time (NULL);
 122   ASSERT (t_now != (time_t) -1);
 123   tm = localtime (&t_now);
 124   ASSERT (tm);
 125   n_bytes = strftime (curr_year_str, sizeof curr_year_str, "%Y", tm);
 126   ASSERT (0 < n_bytes);
 127
 128   for (i = 0; T[i].in; i++)
 129     {
 130       time_t t_out;
 131       time_t t_exp;
 132       bool ok;
 133
 134       /* Some tests assume that time_t is signed.
 135          If it is unsigned and the result is negative, skip the test. */
 136       if (T[i].t_expected < 0 && ! TYPE_SIGNED (time_t))
 137         {
 138           printf ("skipping %s: result is negative, "
 139                   "but your time_t is unsigned\n", T[i].in);
 140           continue;
 141         }
 142
 143       if (! (TYPE_MINIMUM (time_t) <= T[i].t_expected
 144              && T[i].t_expected <= TYPE_MAXIMUM (time_t)))
 145         {
 146           printf ("skipping %s: result is out of range of your time_t\n",
 147                   T[i].in);
 148           continue;
 149         }
 150
 151       t_exp = T[i].t_expected;
 152
 153       /* If an input string does not specify the year number, determine
 154          the expected output by calling posixtime with an otherwise
 155          equivalent string that starts with the current year.  */
 156       if (8 <= strlen (T[i].in)
 157           && (T[i].in[8] == '.' || T[i].in[8] == '\0'))
 158         {
 159           char tmp_buf[20];
 160           stpcpy (stpcpy (tmp_buf, curr_year_str), T[i].in);
 161           ASSERT (posixtime (&t_exp, tmp_buf, T[i].syntax_bits));
 162         }
 163
 164       ok = posixtime (&t_out, T[i].in, T[i].syntax_bits);
 165       if (ok != !!T[i].valid)
 166         {
 167           printf ("%s return value mismatch: got %d, expected %d\n",
 168                   T[i].in, !!ok, T[i].valid);
 169           fail = 1;
 170           continue;
 171         }
 172
 173       if (!ok)
 174         continue;
 175
 176       if (t_out != t_exp)
 177         {
 178           printf ("%s mismatch (-: actual; +:expected)\n-%12ld\n+%12ld\n",
 179                   T[i].in, t_out, t_exp);
 180           fail = 1;
 181         }
 182     }
 183
 184   return fail;
 185 }
 186
 187 /*
 188 Local Variables:
 189 indent-tabs-mode: nil
 190 End:
 191 */