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Make tst-ungetc use libsupport

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Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit 3f7df7e757)
(cherry picked from commit 87a1968a72)
This commit is contained in:
Siddhesh Poyarekar 2024-08-14 19:20:04 -04:00
parent 6484b76fa3
commit 5a9f74b6f4
1 changed files with 57 additions and 55 deletions
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112
stdio-common/tst-ungetc.c
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@ -1,70 +1,72 @@
/* Test for ungetc bugs. */
/* Test for ungetc bugs.
Copyright (C) 1996-2024 Free Software Foundation, Inc.
Copyright The GNU Toolchain Authors.
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 <unistd.h>
#include <support/check.h>
#include <support/support.h>
#include <support/temp_file.h>
#include <support/xstdio.h>
#include <support/xunistd.h>
#undef assert
#define assert(x) \
if (!(x)) \
{ \
fputs ("test failed: " #x "\n", stderr); \
retval = 1; \
goto the_end; \
}
int
main (int argc, char *argv[])
static int
do_test (void)
{
char name[] = "/tmp/tst-ungetc.XXXXXX";
char *name = NULL;
FILE *fp = NULL;
int retval = 0;
int c;
char buffer[64];
int fd = mkstemp (name);
int fd = create_temp_file ("tst-ungetc.", &name);
if (fd == -1)
{
printf ("mkstemp failed: %m\n");
return 1;
}
close (fd);
fp = fopen (name, "w");
assert (fp != NULL)
FAIL_EXIT1 ("cannot create temporary file: %m");
xclose (fd);
fp = xfopen (name, "w");
fputs ("bla", fp);
fclose (fp);
fp = NULL;
xfclose (fp);
fp = fopen (name, "r");
assert (fp != NULL);
assert (ungetc ('z', fp) == 'z');
assert (getc (fp) == 'z');
assert (getc (fp) == 'b');
assert (getc (fp) == 'l');
assert (ungetc ('m', fp) == 'm');
assert (getc (fp) == 'm');
assert ((c = getc (fp)) == 'a');
assert (getc (fp) == EOF);
assert (ungetc (c, fp) == c);
assert (feof (fp) == 0);
assert (getc (fp) == c);
assert (getc (fp) == EOF);
fclose (fp);
fp = NULL;
fp = xfopen (name, "r");
TEST_VERIFY_EXIT (ungetc ('z', fp) == 'z');
TEST_VERIFY_EXIT (getc (fp) == 'z');
TEST_VERIFY_EXIT (getc (fp) == 'b');
TEST_VERIFY_EXIT (getc (fp) == 'l');
TEST_VERIFY_EXIT (ungetc ('m', fp) == 'm');
TEST_VERIFY_EXIT (getc (fp) == 'm');
TEST_VERIFY_EXIT ((c = getc (fp)) == 'a');
TEST_VERIFY_EXIT (getc (fp) == EOF);
TEST_VERIFY_EXIT (ungetc (c, fp) == c);
TEST_VERIFY_EXIT (feof (fp) == 0);
TEST_VERIFY_EXIT (getc (fp) == c);
TEST_VERIFY_EXIT (getc (fp) == EOF);
xfclose (fp);
fp = fopen (name, "r");
assert (fp != NULL);
assert (getc (fp) == 'b');
assert (getc (fp) == 'l');
assert (ungetc ('b', fp) == 'b');
assert (fread (buffer, 1, 64, fp) == 2);
assert (buffer[0] == 'b');
assert (buffer[1] == 'a');
fp = xfopen (name, "r");
TEST_VERIFY_EXIT (getc (fp) == 'b');
TEST_VERIFY_EXIT (getc (fp) == 'l');
TEST_VERIFY_EXIT (ungetc ('b', fp) == 'b');
TEST_VERIFY_EXIT (fread (buffer, 1, 64, fp) == 2);
TEST_VERIFY_EXIT (buffer[0] == 'b');
TEST_VERIFY_EXIT (buffer[1] == 'a');
xfclose (fp);
the_end:
if (fp != NULL)
fclose (fp);
unlink (name);
return retval;
return 0;
}
#include <support/test-driver.c>