tests/test-vasprintf.c

   1 /* Test of vasprintf() and asprintf() functions.
   2    Copyright (C) 2007-2024 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 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  18
  19 #include <config.h>
  20
  21 #include <stdio.h>
  22
  23 #include "signature.h"
  24 SIGNATURE_CHECK (asprintf, int, (char **, char const *, ...));
  25 SIGNATURE_CHECK (vasprintf, int, (char **, char const *, va_list));
  26
  27 #include <stdarg.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include "macros.h"
  32
  33 static int
  34 my_asprintf (char **result, const char *format, ...)
  35 {
  36   va_list args;
  37   int ret;
  38
  39   va_start (args, format);
  40   ret = vasprintf (result, format, args);
  41   va_end (args);
  42   return ret;
  43 }
  44
  45 static void
  46 test_vasprintf ()
  47 {
  48   int repeat;
  49
  50   for (repeat = 0; repeat <= 8; repeat++)
  51     {
  52       char *result;
  53       int retval = my_asprintf (&result, "%d", 12345);
  54       ASSERT (retval == 5);
  55       ASSERT (result != NULL);
  56       ASSERT (strcmp (result, "12345") == 0);
  57       free (result);
  58     }
  59
  60   for (repeat = 0; repeat <= 8; repeat++)
  61     {
  62       char *result;
  63       int retval = my_asprintf (&result, "%08lx", 12345UL);
  64       ASSERT (retval == 8);
  65       ASSERT (result != NULL);
  66       ASSERT (strcmp (result, "00003039") == 0);
  67       free (result);
  68     }
  69 }
  70
  71 static void
  72 test_asprintf ()
  73 {
  74   int repeat;
  75
  76   for (repeat = 0; repeat <= 8; repeat++)
  77     {
  78       char *result;
  79       int retval = asprintf (&result, "%d", 12345);
  80       ASSERT (retval == 5);
  81       ASSERT (result != NULL);
  82       ASSERT (strcmp (result, "12345") == 0);
  83       free (result);
  84     }
  85
  86   for (repeat = 0; repeat <= 8; repeat++)
  87     {
  88       char *result;
  89       int retval = asprintf (&result, "%08lx", 12345UL);
  90       ASSERT (retval == 8);
  91       ASSERT (result != NULL);
  92       ASSERT (strcmp (result, "00003039") == 0);
  93       free (result);
  94     }
  95 }
  96
  97 int
  98 main (int argc, char *argv[])
  99 {
 100   test_vasprintf ();
 101   test_asprintf ();
 102   return test_exit_status;
 103 }