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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 ed9762fdbf
commit a3db6ce751
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 <stdio.h>
#include <stdlib.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 static int
#define assert(x) \ do_test (void)
if (!(x)) \
{ \
fputs ("test failed: " #x "\n", stderr); \
retval = 1; \
goto the_end; \
}
int
main (int argc, char *argv[])
{ {
char name[] = "/tmp/tst-ungetc.XXXXXX"; char *name = NULL;
FILE *fp = NULL; FILE *fp = NULL;
int retval = 0;
int c; int c;
char buffer[64]; char buffer[64];
int fd = mkstemp (name); int fd = create_temp_file ("tst-ungetc.", &name);
if (fd == -1) if (fd == -1)
{ FAIL_EXIT1 ("cannot create temporary file: %m");
printf ("mkstemp failed: %m\n"); xclose (fd);
return 1;
} fp = xfopen (name, "w");
close (fd);
fp = fopen (name, "w");
assert (fp != NULL)
fputs ("bla", fp); fputs ("bla", fp);
fclose (fp); xfclose (fp);
fp = NULL;
fp = fopen (name, "r"); fp = xfopen (name, "r");
assert (fp != NULL); TEST_VERIFY_EXIT (ungetc ('z', fp) == 'z');
assert (ungetc ('z', fp) == 'z'); TEST_VERIFY_EXIT (getc (fp) == 'z');
assert (getc (fp) == 'z'); TEST_VERIFY_EXIT (getc (fp) == 'b');
assert (getc (fp) == 'b'); TEST_VERIFY_EXIT (getc (fp) == 'l');
assert (getc (fp) == 'l'); TEST_VERIFY_EXIT (ungetc ('m', fp) == 'm');
assert (ungetc ('m', fp) == 'm'); TEST_VERIFY_EXIT (getc (fp) == 'm');
assert (getc (fp) == 'm'); TEST_VERIFY_EXIT ((c = getc (fp)) == 'a');
assert ((c = getc (fp)) == 'a'); TEST_VERIFY_EXIT (getc (fp) == EOF);
assert (getc (fp) == EOF); TEST_VERIFY_EXIT (ungetc (c, fp) == c);
assert (ungetc (c, fp) == c); TEST_VERIFY_EXIT (feof (fp) == 0);
assert (feof (fp) == 0); TEST_VERIFY_EXIT (getc (fp) == c);
assert (getc (fp) == c); TEST_VERIFY_EXIT (getc (fp) == EOF);
assert (getc (fp) == EOF); xfclose (fp);
fclose (fp);
fp = NULL;
fp = fopen (name, "r"); fp = xfopen (name, "r");
assert (fp != NULL); TEST_VERIFY_EXIT (getc (fp) == 'b');
assert (getc (fp) == 'b'); TEST_VERIFY_EXIT (getc (fp) == 'l');
assert (getc (fp) == 'l'); TEST_VERIFY_EXIT (ungetc ('b', fp) == 'b');
assert (ungetc ('b', fp) == 'b'); TEST_VERIFY_EXIT (fread (buffer, 1, 64, fp) == 2);
assert (fread (buffer, 1, 64, fp) == 2); TEST_VERIFY_EXIT (buffer[0] == 'b');
assert (buffer[0] == 'b'); TEST_VERIFY_EXIT (buffer[1] == 'a');
assert (buffer[1] == 'a'); xfclose (fp);
the_end: return 0;
if (fp != NULL)
fclose (fp);
unlink (name);
return retval;
} }
#include <support/test-driver.c>