/* Test of fpurge() function.
- Copyright (C) 2007-2009 Free Software Foundation, Inc.
+ Copyright (C) 2007-2013 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
#include <config.h>
+/* None of the files accessed by this test are large, so disable the
+ fseek link warning if we are not using the gnulib fseek module. */
+#define _GL_NO_LARGE_FILES
#include <stdio.h>
-#include <stdlib.h>
#include <string.h>
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- fflush (stderr); \
- abort (); \
- } \
- } \
- while (0)
+#include "macros.h"
#define TESTFILE "t-fpurge.tmp"
/* Create a file with some contents. */
fp = fopen (TESTFILE, "w");
if (fp == NULL)
- goto skip;
+ goto skip;
if (fwrite ("foobarsh", 1, 8, fp) < 8)
- goto skip;
+ goto skip;
if (fclose (fp))
- goto skip;
+ goto skip;
/* The file's contents is now "foobarsh". */
/* Open it in read-write mode. */
fp = fopen (TESTFILE, "r+");
if (fp == NULL)
- goto skip;
+ goto skip;
if (fseek (fp, 3, SEEK_CUR))
- goto skip;
+ goto skip;
if (fwrite ("g", 1, 1, fp) < 1)
- goto skip;
+ goto skip;
if (fflush (fp))
- goto skip;
+ goto skip;
if (fwrite ("bz", 1, 2, fp) < 2)
- goto skip;
+ goto skip;
/* Discard pending write. */
ASSERT (fpurge (fp) == 0);
/* Verify that when discarding pending output, the file position is set
- back to where it was before the write calls. */
+ back to where it was before the write calls. */
if (check_filepos)
- ASSERT (ftell (fp) == 4);
+ ASSERT (ftell (fp) == 4);
ASSERT (fclose (fp) == 0);
/* Open it in read-only mode. */
fp = fopen (TESTFILE, "r");
if (fp == NULL)
- goto skip;
+ goto skip;
/* Verify that the pending writes before the fpurge were really
- discarded. */
+ discarded. */
{
- char buf[8];
- if (fread (buf, 1, 7, fp) < 7)
- goto skip;
- ASSERT (memcmp (buf, "foogars", 7) == 0);
+ char buf[8];
+ if (fread (buf, 1, 7, fp) < 7)
+ goto skip;
+ ASSERT (memcmp (buf, "foogars", 7) == 0);
}
/* Discard the buffered 'h'. */
if (check_filepos)
- ASSERT (ftell (fp) == 7);
+ ASSERT (ftell (fp) == 7);
ASSERT (fpurge (fp) == 0);
/* Verify that when discarding pending input, the file position is
- advanced to match the end of the previously read input. */
+ advanced to match the end of the previously read input. */
if (check_filepos)
- ASSERT (ftell (fp) == 8);
+ ASSERT (ftell (fp) == 8);
ASSERT (getc (fp) == EOF);
ASSERT (fclose (fp) == 0);
/* Ensure that purging a read does not corrupt subsequent writes. */
fp = fopen (TESTFILE, "r+");
if (fp == NULL)
- goto skip;
+ goto skip;
if (fseek (fp, -1, SEEK_END))
- goto skip;
+ goto skip;
ASSERT (getc (fp) == 'h');
ASSERT (getc (fp) == EOF);
if (check_filepos)
- ASSERT (ftell (fp) == 8);
+ ASSERT (ftell (fp) == 8);
ASSERT (fpurge (fp) == 0);
if (check_filepos)
- ASSERT (ftell (fp) == 8);
+ ASSERT (ftell (fp) == 8);
ASSERT (putc ('!', fp) == '!');
+ if (check_filepos)
+ ASSERT (ftell (fp) == 9);
ASSERT (fclose (fp) == 0);
fp = fopen (TESTFILE, "r");
if (fp == NULL)
- goto skip;
+ goto skip;
{
- char buf[10];
- ASSERT (fread (buf, 1, 10, fp) == 9);
- ASSERT (memcmp (buf, "foogarsh!", 9) == 0);
+ char buf[10];
+ ASSERT (fread (buf, 1, 10, fp) == 9);
+ ASSERT (memcmp (buf, "foogarsh!", 9) == 0);
}
ASSERT (fclose (fp) == 0);