mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 14:00:30 +00:00
d14c977c65
There seem to be no glibc tests specifically for the fread function. Add basic tests of that function. Tested for x86_64.
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* Test fread.
|
|
Copyright (C) 2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <support/check.h>
|
|
#include <support/support.h>
|
|
#include <support/temp_file.h>
|
|
#include <support/test-driver.h>
|
|
#include <support/xstdio.h>
|
|
#include <support/xunistd.h>
|
|
|
|
int
|
|
do_test (void)
|
|
{
|
|
char *temp_dir = support_create_temp_directory ("tst-fread");
|
|
char *file1 = xasprintf ("%s/file1", temp_dir);
|
|
support_write_file_string (file1, "file1");
|
|
add_temp_file (file1);
|
|
FILE *fp;
|
|
size_t ret;
|
|
char buf[1024];
|
|
|
|
verbose_printf ("test single-byte reads\n");
|
|
fp = xfopen (file1, "r");
|
|
memset (buf, 0, sizeof buf);
|
|
ret = fread (buf, 1, 2, fp);
|
|
TEST_COMPARE (ret, 2);
|
|
TEST_COMPARE (buf[0], 'f');
|
|
TEST_COMPARE (buf[1], 'i');
|
|
TEST_COMPARE (feof (fp), 0);
|
|
TEST_COMPARE (ftell (fp), 2);
|
|
memset (buf, 0, sizeof buf);
|
|
ret = fread (buf, 1, 3, fp);
|
|
TEST_COMPARE (ret, 3);
|
|
TEST_COMPARE (buf[0], 'l');
|
|
TEST_COMPARE (buf[1], 'e');
|
|
TEST_COMPARE (buf[2], '1');
|
|
TEST_COMPARE (ftell (fp), 5);
|
|
TEST_COMPARE (feof (fp), 0);
|
|
memset (buf, 0, sizeof buf);
|
|
ret = fread (buf, 1, 1, fp);
|
|
TEST_COMPARE (ret, 0);
|
|
TEST_COMPARE (!!feof (fp), 1);
|
|
TEST_COMPARE (ferror (fp), 0);
|
|
TEST_COMPARE (ftell (fp), 5);
|
|
xfclose (fp);
|
|
|
|
verbose_printf ("test single-byte reads, EOF part way through\n");
|
|
fp = xfopen (file1, "r");
|
|
memset (buf, 0, sizeof buf);
|
|
ret = fread (buf, 1, sizeof buf, fp);
|
|
TEST_COMPARE (ret, 5);
|
|
TEST_COMPARE (buf[0], 'f');
|
|
TEST_COMPARE (buf[1], 'i');
|
|
TEST_COMPARE (buf[2], 'l');
|
|
TEST_COMPARE (buf[3], 'e');
|
|
TEST_COMPARE (buf[4], '1');
|
|
TEST_COMPARE (!!feof (fp), 1);
|
|
TEST_COMPARE (ferror (fp), 0);
|
|
TEST_COMPARE (ftell (fp), 5);
|
|
xfclose (fp);
|
|
|
|
verbose_printf ("test multi-byte reads\n");
|
|
fp = xfopen (file1, "r");
|
|
memset (buf, 0, sizeof buf);
|
|
ret = fread (buf, 2, 2, fp);
|
|
TEST_COMPARE (ret, 2);
|
|
TEST_COMPARE (buf[0], 'f');
|
|
TEST_COMPARE (buf[1], 'i');
|
|
TEST_COMPARE (buf[2], 'l');
|
|
TEST_COMPARE (buf[3], 'e');
|
|
TEST_COMPARE (feof (fp), 0);
|
|
TEST_COMPARE (ftell (fp), 4);
|
|
memset (buf, 0, sizeof buf);
|
|
ret = fread (buf, 3, 3, fp);
|
|
TEST_COMPARE (ret, 0);
|
|
/* The bytes written for a partial element read are unspecified. */
|
|
TEST_COMPARE (!!feof (fp), 1);
|
|
TEST_COMPARE (ferror (fp), 0);
|
|
TEST_COMPARE (ftell (fp), 5);
|
|
xfclose (fp);
|
|
|
|
verbose_printf ("test read error\n");
|
|
fp = xfopen (file1, "r");
|
|
xclose (fileno (fp));
|
|
memset (buf, 0, sizeof buf);
|
|
ret = fread (buf, 1, sizeof buf, fp);
|
|
TEST_COMPARE (ret, 0);
|
|
TEST_COMPARE (feof (fp), 0);
|
|
TEST_COMPARE (!!ferror (fp), 1);
|
|
fclose (fp);
|
|
|
|
verbose_printf ("test zero size\n");
|
|
fp = xfopen (file1, "r");
|
|
ret = fread (buf, 0, SIZE_MAX, fp);
|
|
TEST_COMPARE (ret, 0);
|
|
TEST_COMPARE (feof (fp), 0);
|
|
TEST_COMPARE (ferror (fp), 0);
|
|
TEST_COMPARE (ftell (fp), 0);
|
|
xfclose (fp);
|
|
|
|
verbose_printf ("test zero items\n");
|
|
fp = xfopen (file1, "r");
|
|
ret = fread (buf, SIZE_MAX, 0, fp);
|
|
TEST_COMPARE (ret, 0);
|
|
TEST_COMPARE (feof (fp), 0);
|
|
TEST_COMPARE (ferror (fp), 0);
|
|
TEST_COMPARE (ftell (fp), 0);
|
|
xfclose (fp);
|
|
|
|
free (temp_dir);
|
|
free (file1);
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|