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/* Test of fbufmode() function.
Copyright (C) 2007 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include "fbufmode.h"
#include <stdio.h>
#include <stdlib.h>
#define ASSERT(expr) \
do \
{ \
if (!(expr)) \
{ \
fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
abort (); \
} \
} \
while (0)
#define TESTFILE "t-fbufmode.tmp"
int
main ()
{
FILE *fp;
char buf[5];
/* Create a file with some contents. */
fp = fopen (TESTFILE, "w");
if (fp == NULL)
goto skip;
if (fwrite ("foobarsh", 1, 8, fp) < 8)
goto skip;
if (fclose (fp))
goto skip;
/* Open it for reading. */
fp = fopen (TESTFILE, "r");
if (setvbuf (fp, NULL, _IONBF, 0))
goto skip;
ASSERT (fbufmode (fp) == _IONBF);
/* This setvbuf call can fail, e.g. on HP-UX 11. */
if (setvbuf (fp, buf, _IOLBF, 5) == 0)
{
/* mingw's setvbuf implements _IOLBF the same way as _IOFBF. */
ASSERT (fbufmode (fp) == _IOLBF
|| fbufmode (fp) == _IOFBF);
}
/* This setvbuf call can fail, e.g. on HP-UX 11. */
if (setvbuf (fp, buf, _IOFBF, 5) == 0)
{
ASSERT (fbufmode (fp) == _IOFBF);
}
fclose (fp);
return 0;
skip:
fprintf (stderr, "Skipping test: file operations failed.\n");
return 77;
}
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