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/* Test the putenv function.
Copyright (C) 2024 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
This file 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Collin Funk <collin.funk1@gmail.com>, 2024. */
#include <config.h>
/* Specification. */
#include <stdlib.h>
#include "signature.h"
SIGNATURE_CHECK (putenv, int, (char *));
#include <string.h>
#include "macros.h"
int
main (void)
{
char *ptr;
/* Verify the environment is clean. */
unsetenv ("TEST_VAR");
ASSERT (getenv ("TEST_VAR") == NULL);
/* Use static on variables passed to the environment to pacify
-Wanalyzer-putenv-of-auto-var. */
/* Verify adding an environment variable. */
{
static char var[] = "TEST_VAR=abc";
ASSERT (putenv (var) == 0);
ptr = getenv ("TEST_VAR");
ASSERT (ptr != NULL);
ASSERT (STREQ (ptr, "abc"));
}
/* Verify removing an environment variable. */
{
static char var[] = "TEST_VAR";
ASSERT (putenv (var) == 0);
ASSERT (getenv ("TEST_VAR") == NULL);
}
/* Verify the behavior when removing a variable not in the environment. */
{
static char var[] = "TEST_VAR";
ASSERT (putenv (var) == 0);
ASSERT (getenv ("TEST_VAR") == NULL);
}
return test_exit_status;
}
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