glibc/time/tst-tzname.c

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/* Test that tzset sets tzname correctly (BZ #19253).
Copyright (C) 2015-2017 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
<http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
static int
do_test (void)
{
int result = 0;
setenv ("TZ", TZDEFRULES, 1);
tzset ();
const char *stdtz = strdup (tzname[0]);
setenv ("TZ", "STD-1DST", 1);
tzset ();
if (strcmp (tzname[0], "STD") != 0)
{
printf ("FAIL: TZ=STD-1DST, tzname[0] = %s\n", tzname[0]);
result = 1;
}
setenv ("TZ", TZDEFRULES, 1);
tzset ();
if (strcmp (tzname[0], stdtz) != 0)
{
printf ("FAIL: TZ=%s, tzname[0] = %s\n", TZDEFRULES, tzname[0]);
result = 1;
}
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"