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/* Test time function.
Copyright (C) 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 <unistd.h>
#include <support/check.h>
#include <support/test-driver.h>
int
do_test (void)
{
time_t t1, t2, t3, t4, t5, t6;
/* Verify that the calls to time succeed, that the value returned
directly equals that returned through the pointer passed, and
that the time does not decrease. */
t1 = time (&t2);
TEST_VERIFY_EXIT (t1 != (time_t) -1);
TEST_VERIFY (t1 == t2);
t3 = time (NULL);
TEST_VERIFY_EXIT (t3 != (time_t) -1);
TEST_VERIFY (t3 >= t1);
/* Also verify that after sleeping, the time returned has
increased. */
sleep (2);
t4 = time (&t5);
TEST_VERIFY_EXIT (t4 != (time_t) -1);
TEST_VERIFY (t4 == t5);
TEST_VERIFY (t4 > t3);
t6 = time (NULL);
TEST_VERIFY_EXIT (t6 != (time_t) -1);
TEST_VERIFY (t6 >= t4);
return 0;
}
#include <support/test-driver.c>
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