test-fopen.h

   1 /* Test of opening a file stream.
   2    Copyright (C) 2007-2009 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 <http://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  18
  19 /* Include <config.h> and a form of <stdio.h> first.  */
  20
  21 #include <stdlib.h>
  22
  23 #define ASSERT(expr) \
  24   do                                                                         \
  25     {                                                                        \
  26       if (!(expr))                                                           \
  27         {                                                                    \
  28           fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
  29           fflush (stderr);                                                   \
  30           abort ();                                                          \
  31         }                                                                    \
  32     }                                                                        \
  33   while (0)
  34
  35 int
  36 main ()
  37 {
  38   ASSERT (fopen ("nonexist.ent/", "w") == NULL);
  39   ASSERT (fopen ("/dev/null/", "r") == NULL);
  40
  41   ASSERT (fopen ("/dev/null", "r") != NULL);
  42
  43   return 0;
  44 }