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/* Test program for dirname function a la XPG.
Copyright (C) 1996-2025 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/>. */
#define _GNU_SOURCE 1
#include <libgen.h>
#include <stdio.h>
#include <string.h>
static int
test (const char *input, const char *result)
{
int retval;
char *cp;
cp = strdupa (input);
cp = dirname (cp);
retval = strcmp (cp, result);
if (retval)
printf ("dirname(\"%s\") should be \"%s\", but is \"%s\"\n",
input, result, cp);
return retval;
}
static int
do_test (void)
{
int result = 0;
/* These are the examples given in XPG4.2. */
result |= test ("/usr/lib", "/usr");
result |= test ("/usr/", "/");
result |= test ("usr", ".");
result |= test ("/", "/");
result |= test (".", ".");
result |= test ("..", ".");
/* Some more tests. */
result |= test ("/usr/lib/", "/usr");
result |= test ("/usr", "/");
result |= test ("a//", ".");
result |= test ("a////", ".");
result |= test ("////usr", "/");
result |= test ("////usr//", "/");
result |= test ("//usr", "//");
result |= test ("//usr//", "//");
result |= test ("//", "//");
/* Other Unix implementations behave like this. */
result |= test ("x///y", "x");
result |= test ("x/////y", "x");
return result != 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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