tests/test-nstrftime.c

   1 /* Test that nstrftime works as required.
   2    Copyright (C) 2011-2019 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 "strftime.h"
  22
  23 #include <errno.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <time.h>
  27 #include <unistd.h>
  28
  29 #include "macros.h"
  30 #define STREQ(a, b) (strcmp (a, b) == 0)
  31
  32 /* Support for settings like TZ='<+00>0' was added in IEEE Std 1003.1-2001.  */
  33 #define TZ_ANGLE_BRACKETS_SHOULD_WORK (200112 <= _POSIX_VERSION)
  34
  35 struct posixtm_test
  36 {
  37   time_t in;
  38   int in_ns;
  39   char const *fmt;
  40   char const *exp;
  41 };
  42
  43 static struct posixtm_test const T[] =
  44   {
  45     { 1300000000, 0,            "%F", "2011-03-13" },
  46     { 0,          10,           "%T.%N", "00:00:00.000000010" },
  47     { 0,          0,            NULL, NULL }
  48   };
  49
  50 static int
  51 posixtm_test (void)
  52 {
  53   int fail = 0;
  54   unsigned int i;
  55
  56   for (i = 0; T[i].fmt; i++)
  57     {
  58       char buf[1000];
  59       time_t t = T[i].in;
  60       struct tm *tm = gmtime (&t);
  61       size_t n;
  62
  63       ASSERT (tm);
  64
  65       n = nstrftime (buf, sizeof buf, T[i].fmt, tm, 0, T[i].in_ns);
  66       if (n == 0)
  67         {
  68           fail = 1;
  69           printf ("nstrftime failed with format %s\n", T[i].fmt);
  70         }
  71
  72       if (! STREQ (buf, T[i].exp))
  73         {
  74           fail = 1;
  75           printf ("%s: result mismatch: got %s, expected %s\n",
  76                   T[i].fmt, buf, T[i].exp);
  77         }
  78     }
  79
  80   return fail;
  81 }
  82
  83 struct tzalloc_test
  84 {
  85   timezone_t tz;
  86   char const *setting;
  87 };
  88
  89 static struct tzalloc_test TZ[] =
  90   {
  91 #define Pacific 0
  92     { 0, "PST8PDT,M3.2.0,M11.1.0"      },
  93 #define Arizona 1
  94     { 0, "MST7"                        },
  95 #define UTC 2
  96     { 0, 0                             },
  97 #define CentEur 3
  98     { 0, "CET-1CEST,M3.5.0,M10.5.0/3"  },
  99 #define Japan 4
 100     { 0, "JST-9"                       },
 101 #define NZ 5
 102     { 0, "NZST-12NZDT,M9.5.0,M4.1.0/3" },
 103 #define Unknown 6
 104     { 0, "<-00>0" },
 105     { 0 }
 106   };
 107
 108 struct localtime_rz_test
 109 {
 110   /* Input parameters.  */
 111   struct tzalloc_test *tza;
 112   time_t t;
 113
 114   /* Expected result.  */
 115   char const *exp;
 116
 117   /* Determines if an incorrectly unset tm_isdst
 118      results in failure or just a warning.  */
 119   int ahistorical;
 120 };
 121
 122 static struct localtime_rz_test LT[] =
 123   {
 124     { TZ+Pacific,          0, "1969-12-31 16:00:00 -0800 (PST)",  0 },
 125     { TZ+Arizona,          0, "1969-12-31 17:00:00 -0700 (MST)",  0 },
 126     { TZ+UTC    ,          0, "1970-01-01 00:00:00 +0000 (UTC)",  0 },
 127     { TZ+CentEur,          0, "1970-01-01 01:00:00 +0100 (CET)",  0 },
 128     { TZ+Japan  ,          0, "1970-01-01 09:00:00 +0900 (JST)",  0 },
 129     { TZ+NZ     ,          0, "1970-01-01 13:00:00 +1300 (NZDT)", 1 },
 130     { TZ+Pacific,  500000001, "1985-11-04 16:53:21 -0800 (PST)",  0 },
 131     { TZ+Arizona,  500000001, "1985-11-04 17:53:21 -0700 (MST)",  0 },
 132     { TZ+UTC    ,  500000001, "1985-11-05 00:53:21 +0000 (UTC)",  0 },
 133     { TZ+CentEur,  500000001, "1985-11-05 01:53:21 +0100 (CET)",  1 },
 134     { TZ+Japan  ,  500000001, "1985-11-05 09:53:21 +0900 (JST)",  0 },
 135     { TZ+NZ     ,  500000001, "1985-11-05 13:53:21 +1300 (NZDT)", 0 },
 136     { TZ+Pacific, 1000000002, "2001-09-08 18:46:42 -0700 (PDT)",  0 },
 137     { TZ+Arizona, 1000000002, "2001-09-08 18:46:42 -0700 (MST)",  0 },
 138     { TZ+UTC    , 1000000002, "2001-09-09 01:46:42 +0000 (UTC)",  0 },
 139     { TZ+CentEur, 1000000002, "2001-09-09 03:46:42 +0200 (CEST)", 0 },
 140     { TZ+Japan  , 1000000002, "2001-09-09 10:46:42 +0900 (JST)",  0 },
 141     { TZ+NZ     , 1000000002, "2001-09-09 13:46:42 +1200 (NZST)", 0 },
 142 #if TZ_ANGLE_BRACKETS_SHOULD_WORK
 143     { TZ+Unknown,          0, "1970-01-01 00:00:00 -0000 (-00)",  0 },
 144     { TZ+Unknown,  500000001, "1985-11-05 00:53:21 -0000 (-00)",  0 },
 145     { TZ+Unknown, 1000000002, "2001-09-09 01:46:42 -0000 (-00)",  0 },
 146 #endif
 147     { 0 }
 148   };
 149
 150 static int
 151 tzalloc_test (void)
 152 {
 153   int fail = 0;
 154   int i;
 155
 156   for (i = 0; LT[i].tza; i++)
 157     {
 158       struct tzalloc_test *tza = LT[i].tza;
 159       long lt = LT[i].t;
 160       timezone_t tz = tza->tz;
 161       char const *setting;
 162       static char const format[] = "%Y-%m-%d %H:%M:%S %z (%Z)";
 163       char buf[1000];
 164       struct tm tm;
 165       size_t n;
 166
 167       if (!tz && tza->setting)
 168         {
 169           tz = tzalloc (tza->setting);
 170           if (!tz)
 171             {
 172               fail = 1;
 173               printf ("%s: tzalloc: %s\n", TZ[i].setting, strerror (errno));
 174               continue;
 175             }
 176           tza->tz = tz;
 177         }
 178
 179       setting = tza->setting ? tza->setting : "UTC0";
 180
 181       if (!localtime_rz (tz, &LT[i].t, &tm))
 182         {
 183           fail = 1;
 184           printf ("%s: %ld: localtime_rz: %s\n", setting, lt,
 185                   strerror (errno));
 186           continue;
 187         }
 188
 189       n = nstrftime (buf, sizeof buf, format, &tm, tz, 0);
 190       if (n == 0)
 191         {
 192           fail = 1;
 193           printf ("%s: %ld: nstrftime failed\n", setting, lt);
 194           continue;
 195         }
 196
 197       if (! (STREQ (buf, LT[i].exp)
 198              || (!tz && n == strlen (LT[i].exp)
 199                  && memcmp (buf, LT[i].exp, n - sizeof "(GMT)" + 1) == 0
 200                  && STREQ (buf + n - sizeof "(GMT)" + 1, "(GMT)"))))
 201         {
 202           /* Don't fail for unhandled dst in ahistorical entries,
 203              as gnulib doesn't currently fix that issue, seen on Darwin 14.  */
 204           if (!LT[i].ahistorical || tm.tm_isdst)
 205             fail = 1;
 206           printf ("%s: expected \"%s\", got \"%s\"\n",
 207                   setting, LT[i].exp, buf);
 208         }
 209     }
 210
 211   return fail;
 212 }
 213
 214
 215 static int
 216 quarter_test (void)
 217 {
 218   int result = 0;
 219   size_t mon;
 220
 221   /* Check %q.  */
 222   for (mon = 1; mon <= 12; mon++)
 223     {
 224       char out[2];
 225       char exp[2] = {0,};
 226       struct tm qtm = { .tm_mon = mon - 1 };
 227       char fmt[3] = {'%','q','\0'};
 228
 229       size_t r = nstrftime (out, sizeof (out), fmt, &qtm, 0, 0);
 230       if (r == 0)
 231         {
 232           puts ("nstrftime(\"%q\") failed");
 233           result = 1;
 234           break;
 235         }
 236
 237       exp[0] = mon < 4 ? '1' : mon < 7 ? '2' : mon < 10 ? '3' : '4';
 238       if (strcmp (out, exp) != 0)
 239         {
 240           printf ("nstrftime %%q: expected \"%s\", got \"%s\"\n", exp, out);
 241           result = 1;
 242           break;
 243         }
 244     }
 245
 246   return result;
 247 }
 248
 249 int
 250 main (void)
 251 {
 252   int fail = 0;
 253   fail |= posixtm_test ();
 254   fail |= tzalloc_test ();
 255   fail |= quarter_test ();
 256   return fail;
 257 }
 258
 259 /*
 260 Local Variables:
 261 indent-tabs-mode: nil
 262 End:
 263 */