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/* Basic tests for gmtime.
Copyright (C) 2021-2024 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/>. */
#include <time.h>
#include <stdlib.h>
#include <support/check.h>
static int
do_test (void)
{
/* Check if the epoch time can be converted. */
{
time_t t = 0;
struct tm *tmg = gmtime (&t);
TEST_COMPARE (tmg->tm_sec, 0);
TEST_COMPARE (tmg->tm_min, 0);
TEST_COMPARE (tmg->tm_hour, 0);
TEST_COMPARE (tmg->tm_mday, 1);
TEST_COMPARE (tmg->tm_mon, 0);
TEST_COMPARE (tmg->tm_year, 70);
TEST_COMPARE (tmg->tm_wday, 4);
TEST_COMPARE (tmg->tm_yday, 0);
TEST_COMPARE (tmg->tm_isdst, 0);
}
{
/* Same as before but with gmtime_r. */
time_t t = 0;
struct tm tms;
struct tm *tmg = gmtime_r (&t, &tms);
TEST_VERIFY (tmg == &tms);
TEST_COMPARE (tmg->tm_sec, 0);
TEST_COMPARE (tmg->tm_min, 0);
TEST_COMPARE (tmg->tm_hour, 0);
TEST_COMPARE (tmg->tm_mday, 1);
TEST_COMPARE (tmg->tm_mon, 0);
TEST_COMPARE (tmg->tm_year, 70);
TEST_COMPARE (tmg->tm_wday, 4);
TEST_COMPARE (tmg->tm_yday, 0);
TEST_COMPARE (tmg->tm_isdst, 0);
}
/* Check if the max time value for 32 bit time_t can be converted. */
{
time_t t = 0x7fffffff;
struct tm *tmg = gmtime (&t);
TEST_COMPARE (tmg->tm_sec, 7);
TEST_COMPARE (tmg->tm_min, 14);
TEST_COMPARE (tmg->tm_hour, 3);
TEST_COMPARE (tmg->tm_mday, 19);
TEST_COMPARE (tmg->tm_mon, 0);
TEST_COMPARE (tmg->tm_year, 138);
TEST_COMPARE (tmg->tm_wday, 2);
TEST_COMPARE (tmg->tm_yday, 18);
TEST_COMPARE (tmg->tm_isdst, 0);
}
{
/* Same as before but with ctime_r. */
time_t t = 0x7fffffff;
struct tm tms;
struct tm *tmg = gmtime_r (&t, &tms);
TEST_VERIFY (tmg == &tms);
TEST_COMPARE (tmg->tm_sec, 7);
TEST_COMPARE (tmg->tm_min, 14);
TEST_COMPARE (tmg->tm_hour, 3);
TEST_COMPARE (tmg->tm_mday, 19);
TEST_COMPARE (tmg->tm_mon, 0);
TEST_COMPARE (tmg->tm_year, 138);
TEST_COMPARE (tmg->tm_wday, 2);
TEST_COMPARE (tmg->tm_yday, 18);
TEST_COMPARE (tmg->tm_isdst, 0);
}
if (sizeof (time_t) < 8)
return 0;
{
time_t t = (time_t) 0x80000000ull;
struct tm *tmg = gmtime (&t);
TEST_COMPARE (tmg->tm_sec, 8);
TEST_COMPARE (tmg->tm_min, 14);
TEST_COMPARE (tmg->tm_hour, 3);
TEST_COMPARE (tmg->tm_mday, 19);
TEST_COMPARE (tmg->tm_mon, 0);
TEST_COMPARE (tmg->tm_year, 138);
TEST_COMPARE (tmg->tm_wday, 2);
TEST_COMPARE (tmg->tm_yday, 18);
TEST_COMPARE (tmg->tm_isdst, 0);
}
{
time_t t = (time_t) 0x80000000ull;
struct tm tms;
struct tm *tmg = gmtime_r (&t, &tms);
TEST_VERIFY (tmg == &tms);
TEST_COMPARE (tmg->tm_sec, 8);
TEST_COMPARE (tmg->tm_min, 14);
TEST_COMPARE (tmg->tm_hour, 3);
TEST_COMPARE (tmg->tm_mday, 19);
TEST_COMPARE (tmg->tm_mon, 0);
TEST_COMPARE (tmg->tm_year, 138);
TEST_COMPARE (tmg->tm_wday, 2);
TEST_COMPARE (tmg->tm_yday, 18);
TEST_COMPARE (tmg->tm_isdst, 0);
}
return 0;
}
#include <support/test-driver.c>
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