root/maint/gnulib/tests/unistdio/test-u16-asnprintf1.h

/* */

INCLUDED FROM

DEFINITIONS

1. test_function

   1 /* Test of u16_[v]asnprintf() function.
   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 (uint16_t * (*my_asnprintf) (uint16_t *, size_t *, const char *, ...))
     /*  */
  21 {
  22   uint16_t 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       uint16_t *result = my_asnprintf (NULL, &length, "%d", 12345);
  31       static const uint16_t expected[] =
  32         { '1', '2', '3', '4', '5', 0 };
  33       ASSERT (result != NULL);
  34       ASSERT (u16_strcmp (result, expected) == 0);
  35       ASSERT (length == 5);
  36       free (result);
  37     }
  38 
  39   for (size = 0; size <= 8; size++)
  40     {
  41       static const uint16_t initializer[] =
  42         { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F', 0 };
  43       static const uint16_t expected[] =
  44         { '1', '2', '3', '4', '5', 0 };
  45       size_t length;
  46       uint16_t *result;
  47 
  48       u16_cpy (buf, initializer, 8);
  49       length = size;
  50       result = my_asnprintf (buf, &length, "%d", 12345);
  51       ASSERT (result != NULL);
  52       ASSERT (u16_strcmp (result, expected) == 0);
  53       ASSERT (length == 5);
  54       if (size < 6)
  55         ASSERT (result != buf);
  56       ASSERT (u16_cmp (buf + size, initializer + size, 8 - size) == 0);
  57       if (result != buf)
  58         free (result);
  59     }
  60 }

/* */