tests/test-c-vsnprintf.c

   1 /* Test of c_vsnprintf() function.
   2    Copyright (C) 2011-2024 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 #include <config.h>
  18
  19 #include "c-vsnprintf.h"
  20
  21 #include <locale.h>
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25
  26 #include "macros.h"
  27
  28 #include <string.h>
  29
  30 static int
  31 my_c_snprintf (char *buf, int size, const char *format, ...)
  32 {
  33   va_list args;
  34   int ret;
  35
  36   va_start (args, format);
  37   ret = c_vsnprintf (buf, size, format, args);
  38   va_end (args);
  39   return ret;
  40 }
  41
  42 int
  43 main (int argc, char *argv[])
  44 {
  45   /* configure should already have checked that the locale is supported.  */
  46   if (setlocale (LC_ALL, "") == NULL)
  47     return 1;
  48
  49   /* Test behaviour of snprintf() as a "control group".
  50      (We should be running in a locale where ',' is the decimal point.) */
  51   {
  52     char s[16];
  53
  54     snprintf (s, sizeof s, "%#.0f", 1.0);
  55     if (!strcmp (s, "1."))
  56       {
  57         /* Skip the test, since we're not in a useful locale for testing. */
  58         return 77;
  59       }
  60     ASSERT (!strcmp (s, "1,"));
  61   }
  62
  63   /* Test behaviour of c_vsnprintf().
  64      It should always use '.' as the decimal point. */
  65   {
  66     char s[16];
  67
  68     my_c_snprintf (s, sizeof s, "%#.0f", 1.0);
  69     ASSERT (!strcmp (s, "1."));
  70   }
  71
  72   return test_exit_status;
  73 }