root/maint/gnulib/tests/unistdio/test-ulc-asnprintf1.h

/* */

INCLUDED FROM

DEFINITIONS

1. test_function

   1 /* Test of ulc_[v]asnprintf() functions.
   2    Copyright (C) 2007, 2009-2021 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 static void
  20 test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     /*  */
  21 {
  22   char buf[8];
  23   int size;
  24 
  25   /* Test return value convention.  */
  26 
  27   for (size = 0; size <= 8; size++)
  28     {
  29       size_t length = size;
  30       char *result = my_asnprintf (NULL, &length, "%d", 12345);
  31       ASSERT (result != NULL);
  32       ASSERT (strcmp (result, "12345") == 0);
  33       ASSERT (length == 5);
  34       free (result);
  35     }
  36 
  37   for (size = 0; size <= 8; size++)
  38     {
  39       size_t length;
  40       char *result;
  41 
  42       memcpy (buf, "DEADBEEF", 8);
  43       length = size;
  44       result = my_asnprintf (buf, &length, "%d", 12345);
  45       ASSERT (result != NULL);
  46       ASSERT (strcmp (result, "12345") == 0);
  47       ASSERT (length == 5);
  48       if (size < 6)
  49         ASSERT (result != buf);
  50       ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
  51       if (result != buf)
  52         free (result);
  53     }
  54 }

/* */