tests/test-binary-io.c

   1 /* Test of binary mode I/O.
   2    Copyright (C) 2005, 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>, 2005.  */
  18
  19 #include <config.h>
  20
  21 #include "binary-io.h"
  22
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <fcntl.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <unistd.h>
  29
  30 #include "macros.h"
  31
  32 int
  33 main (_GL_UNUSED int argc, char *argv[])
  34 {
  35   /* Test the O_BINARY macro.  */
  36   {
  37     int fd =
  38       open ("t-bin-out0.tmp", O_CREAT | O_TRUNC | O_RDWR | O_BINARY, 0600);
  39     if (write (fd, "Hello\n", 6) < 0)
  40       exit (1);
  41     close (fd);
  42   }
  43   {
  44     struct stat statbuf;
  45     if (stat ("t-bin-out0.tmp", &statbuf) < 0)
  46       exit (1);
  47     ASSERT (statbuf.st_size == 6);
  48   }
  49
  50   switch (argv[1][0])
  51     {
  52     case '1':
  53       /* Test the set_binary_mode() function.  */
  54       set_binary_mode (1, O_BINARY);
  55       fputs ("Hello\n", stdout);
  56       break;
  57
  58     default:
  59       break;
  60     }
  61
  62   return test_exit_status;
  63 }