tests/test-c-xvasprintf.c

   1 /* Test of c_xasprintf() and c_xvasprintf() functions.
   2    Copyright (C) 2011-2020 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 #include <config.h>
  18
  19 #include "c-xvasprintf.h"
  20
  21 #include <locale.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25 #include "macros.h"
  26
  27 static char *
  28 my_c_xasprintf (const char *format, ...)
  29 {
  30   va_list args;
  31   char *s;
  32
  33   va_start (args, format);
  34   s = c_xvasprintf (format, args);
  35   va_end (args);
  36
  37   return s;
  38 }
  39
  40 int
  41 main (int argc, char *argv[])
  42 {
  43   /* configure should already have checked that the locale is supported.  */
  44   if (setlocale (LC_ALL, "") == NULL)
  45     return 1;
  46
  47   /* Test behaviour of snprintf() as a "control group".
  48      (We should be running in a locale where ',' is the decimal point.) */
  49   {
  50     char s[16];
  51
  52     snprintf (s, sizeof s, "%#.0f", 1.0);
  53     if (!strcmp (s, "1."))
  54       {
  55         /* Skip the test, since we're not in a useful locale for testing. */
  56         return 77;
  57       }
  58     ASSERT (!strcmp (s, "1,"));
  59   }
  60
  61   /* Test behaviour of c_xasprintf() and c_xvasprintf().
  62      They should always use '.' as the decimal point. */
  63   {
  64     char *s;
  65
  66     s = c_xasprintf ("%#.0f", 1.0);
  67     ASSERT (s != NULL);
  68     ASSERT (!strcmp (s, "1."));
  69     free (s);
  70
  71     s = my_c_xasprintf ("%#.0f", 1.0);
  72     ASSERT (s != NULL);
  73     ASSERT (!strcmp (s, "1."));
  74     free (s);
  75   }
  76
  77   return 0;
  78 }