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glibc/support/tst-timespec.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights 
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

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/* Test for support_timespec_check_in_range function.
Copyright (C) 2020-2021 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 <support/timespec.h>
#include <support/check.h>
#include <limits.h>
#include <intprops.h>
#define TIMESPEC_HZ 1000000000
struct timespec_ns_test_case
{
struct timespec time;
time_t time_ns;
};
struct timespec_norm_test_case
{
struct timespec time;
struct timespec norm;
};
struct timespec_test_case
{
struct timespec expected;
struct timespec observed;
double upper_bound;
double lower_bound;
int result;
};
#define TIME_T_MIN TYPE_MINIMUM (time_t)
#define TIME_T_MAX TYPE_MAXIMUM (time_t)
/* Test cases for timespec_ns */
struct timespec_ns_test_case ns_cases[] = {
{.time = {.tv_sec = 0, .tv_nsec = 0},
.time_ns = 0,
},
{.time = {.tv_sec = 0, .tv_nsec = 1},
.time_ns = 1,
},
{.time = {.tv_sec = 1, .tv_nsec = 0},
.time_ns = TIMESPEC_HZ,
},
{.time = {.tv_sec = 1, .tv_nsec = 1},
.time_ns = TIMESPEC_HZ + 1,
},
{.time = {.tv_sec = 0, .tv_nsec = -1},
.time_ns = -1,
},
{.time = {.tv_sec = -1, .tv_nsec = 0},
.time_ns = -TIMESPEC_HZ,
},
{.time = {.tv_sec = -1, .tv_nsec = -1},
.time_ns = -TIMESPEC_HZ - 1,
},
{.time = {.tv_sec = 1, .tv_nsec = -1},
.time_ns = TIMESPEC_HZ - 1,
},
{.time = {.tv_sec = -1, .tv_nsec = 1},
.time_ns = -TIMESPEC_HZ + 1,
},
/* Overflow bondary by 2 */
{.time = {.tv_sec = TIME_T_MAX / TIMESPEC_HZ,
.tv_nsec = TIME_T_MAX % TIMESPEC_HZ - 1},
.time_ns = TIME_T_MAX - 1,
},
/* Overflow bondary */
{.time = {.tv_sec = TIME_T_MAX / TIMESPEC_HZ,
.tv_nsec = TIME_T_MAX % TIMESPEC_HZ},
.time_ns = TIME_T_MAX,
},
/* Underflow bondary by 1 */
{.time = {.tv_sec = TIME_T_MIN / TIMESPEC_HZ,
.tv_nsec = TIME_T_MIN % TIMESPEC_HZ + 1},
.time_ns = TIME_T_MIN + 1,
},
/* Underflow bondary */
{.time = {.tv_sec = TIME_T_MIN / TIMESPEC_HZ,
.tv_nsec = TIME_T_MIN % TIMESPEC_HZ},
.time_ns = TIME_T_MIN,
},
/* Multiplication overflow */
{.time = {.tv_sec = TIME_T_MAX / TIMESPEC_HZ + 1, .tv_nsec = 1},
.time_ns = TIME_T_MAX,
},
/* Multiplication underflow */
{.time = {.tv_sec = TIME_T_MIN / TIMESPEC_HZ - 1, .tv_nsec = -1},
.time_ns = TIME_T_MIN,
},
/* Sum overflows */
{.time = {.tv_sec = TIME_T_MAX / TIMESPEC_HZ,
.tv_nsec = TIME_T_MAX % TIMESPEC_HZ + 1},
.time_ns = TIME_T_MAX,
},
/* Sum underflow */
{.time = {.tv_sec = TIME_T_MIN / TIMESPEC_HZ,
.tv_nsec = TIME_T_MIN % TIMESPEC_HZ - 1},
.time_ns = TIME_T_MIN,
}
};
/* Test cases for timespec_norm */
struct timespec_norm_test_case norm_cases[] = {
/* Positive cases */
{.time = {.tv_sec = 0, .tv_nsec = 0},
.norm = {.tv_sec = 0, .tv_nsec = 0}
},
{.time = {.tv_sec = 1, .tv_nsec = 0},
.norm = {.tv_sec = 1, .tv_nsec = 0}
},
{.time = {.tv_sec = 0, .tv_nsec = 1},
.norm = {.tv_sec = 0, .tv_nsec = 1}
},
{.time = {.tv_sec = 0, .tv_nsec = TIMESPEC_HZ},
.norm = {.tv_sec = 1, .tv_nsec = 0}
},
{.time = {.tv_sec = 0, .tv_nsec = TIMESPEC_HZ + 1},
.norm = {.tv_sec = 1, .tv_nsec = 1}
},
{.time = {.tv_sec = 1, .tv_nsec = TIMESPEC_HZ},
.norm = {.tv_sec = 2, .tv_nsec = 0}
},
{.time = {.tv_sec = 1, .tv_nsec = TIMESPEC_HZ + 1},
.norm = {.tv_sec = 2, .tv_nsec = 1}
},
/* Negative cases */
{.time = {.tv_sec = 0, .tv_nsec = -TIMESPEC_HZ},
.norm = {.tv_sec = -1, .tv_nsec = 0}
},
{.time = {.tv_sec = 0, .tv_nsec = -TIMESPEC_HZ - 1},
.norm = {.tv_sec = -1, .tv_nsec = -1}
},
{.time = {.tv_sec = -1, .tv_nsec = -TIMESPEC_HZ},
.norm = {.tv_sec = -2, .tv_nsec = 0}
},
{.time = {.tv_sec = -1, .tv_nsec = -TIMESPEC_HZ - 1},
.norm = {.tv_sec = -2, .tv_nsec = -1}
},
/* Overflow bondary by 2 */
{.time = {.tv_sec = TIME_T_MAX - 2, .tv_nsec = TIMESPEC_HZ + 1},
.norm = {.tv_sec = TIME_T_MAX - 1, 1},
},
/* Overflow bondary by 1 */
{.time = {.tv_sec = TIME_T_MAX - 1, .tv_nsec = TIMESPEC_HZ + 1},
.norm = {.tv_sec = TIME_T_MAX, .tv_nsec = 1},
},
/* Underflow bondary by 2 */
{.time = {.tv_sec = TIME_T_MIN + 2, .tv_nsec = -TIMESPEC_HZ - 1},
.norm = {.tv_sec = TIME_T_MIN + 1, -1},
},
/* Underflow bondary by 1 */
{.time = {.tv_sec = TIME_T_MIN + 1, .tv_nsec = -TIMESPEC_HZ - 1},
.norm = {.tv_sec = TIME_T_MIN, .tv_nsec = -1},
},
/* SUM overflow */
{.time = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ},
.norm = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ - 1},
},
/* SUM underflow */
{.time = {.tv_sec = TIME_T_MIN, .tv_nsec = -TIMESPEC_HZ},
.norm = {.tv_sec = TIME_T_MIN, .tv_nsec = -1 * (TIMESPEC_HZ - 1)},
}
};
/* Test cases for timespec_check_in_range */
struct timespec_test_case check_cases[] = {
/* 0 - In range */
{.expected = {.tv_sec = 1, .tv_nsec = 0},
.observed = {.tv_sec = 1, .tv_nsec = 0},
.upper_bound = 1, .lower_bound = 1, .result = 1,
},
/* 1 - Out of range */
{.expected = {.tv_sec = 1, .tv_nsec = 0},
.observed = {.tv_sec = 2, .tv_nsec = 0},
.upper_bound = 1, .lower_bound = 1, .result = 0,
},
/* 2 - Upper Bound */
{.expected = {.tv_sec = 1, .tv_nsec = 0},
.observed = {.tv_sec = 2, .tv_nsec = 0},
.upper_bound = 2, .lower_bound = 1, .result = 1,
},
/* 3 - Lower Bound */
{.expected = {.tv_sec = 1, .tv_nsec = 0},
.observed = {.tv_sec = 0, .tv_nsec = 0},
.upper_bound = 1, .lower_bound = 0, .result = 1,
},
/* 4 - Out of range by nanosecs */
{.expected = {.tv_sec = 1, .tv_nsec = 0},
.observed = {.tv_sec = 1, .tv_nsec = 500},
.upper_bound = 1, .lower_bound = 1, .result = 0,
},
/* 5 - In range by nanosecs */
{.expected = {.tv_sec = 1, .tv_nsec = 0},
.observed = {.tv_sec = 1, .tv_nsec = 50000},
.upper_bound = 1.3, .lower_bound = 1, .result = 1,
},
/* 6 - Big nanosecs */
{.expected = {.tv_sec = 1, .tv_nsec = 0},
.observed = {.tv_sec = 0, .tv_nsec = 4000000},
.upper_bound = 1, .lower_bound = .001, .result = 1,
},
/* 7 - In range Negative values */
{.expected = {.tv_sec = -1, .tv_nsec = 0},
.observed = {.tv_sec = -1, .tv_nsec = 0},
.upper_bound = 1, .lower_bound = 1, .result = 1,
},
/* 8 - Out of range Negative values */
{.expected = {.tv_sec = -1, .tv_nsec = 0},
.observed = {.tv_sec = -1, .tv_nsec = 0},
.upper_bound = -1, .lower_bound = -1, .result = 0,
},
/* 9 - Negative values with negative nanosecs */
{.expected = {.tv_sec = -1, .tv_nsec = 0},
.observed = {.tv_sec = -1, .tv_nsec = -2000},
.upper_bound = 1, .lower_bound = 1, .result = 0,
},
/* 10 - Strict bounds */
{.expected = {.tv_sec = -1, .tv_nsec = 0},
.observed = {.tv_sec = -1, .tv_nsec = -20000},
.upper_bound = 1.00002, .lower_bound = 1.0000191, .result = 1,
},
/* 11 - Strict bounds with loose upper bound */
{.expected = {.tv_sec = 1, .tv_nsec = 20000},
.observed = {.tv_sec = 1, .tv_nsec = 30000},
.upper_bound = 1.0000100000, .lower_bound = 1.0000099998, .result = 1,
},
/* 12 - Strict bounds with loose lower bound */
{.expected = {.tv_sec = 1, .tv_nsec = 20000},
.observed = {.tv_sec = 1, .tv_nsec = 30000},
.upper_bound = 1.0000099999, .lower_bound = 1.00000999979, .result = 1,
},
/* 13 - Strict bounds highest precision */
{.expected = {.tv_sec = 1, .tv_nsec = 20000},
.observed = {.tv_sec = 1, .tv_nsec = 30000},
.upper_bound = 1.00000999980001, .lower_bound = 1.00000999979999, .result = 1,
},
/* Maximum/Minimum long values */
/* 14 */
{.expected = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ - 1},
.observed = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ - 2},
.upper_bound = 1, .lower_bound = .9, .result = 1,
},
/* 15 - support_timespec_ns overflow */
{.expected = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ},
.observed = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ},
.upper_bound = 1, .lower_bound = 1, .result = 1,
},
/* 16 - support_timespec_ns overflow + underflow */
{.expected = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ},
.observed = {.tv_sec = TIME_T_MIN, .tv_nsec = -TIMESPEC_HZ},
.upper_bound = 1, .lower_bound = 1, .result = 0,
},
/* 17 - support_timespec_ns underflow */
{.expected = {.tv_sec = TIME_T_MIN, .tv_nsec = -TIMESPEC_HZ},
.observed = {.tv_sec = TIME_T_MIN, .tv_nsec = -TIMESPEC_HZ},
.upper_bound = 1, .lower_bound = 1, .result = 1,
},
/* 18 - support_timespec_ns underflow + overflow */
{.expected = {.tv_sec = TIME_T_MIN, .tv_nsec = -TIMESPEC_HZ},
.observed = {.tv_sec = TIME_T_MAX, .tv_nsec = TIMESPEC_HZ},
.upper_bound = 1, .lower_bound = 1, .result = 0,
},
/* 19 - Biggest division */
{.expected = {.tv_sec = TIME_T_MAX / TIMESPEC_HZ,
.tv_nsec = TIMESPEC_HZ - 1},
.observed = {.tv_sec = 0, .tv_nsec = 1},
.upper_bound = 1, .lower_bound = 1.0842021724855044e-19, .result = 1,
},
/* 20 - Lowest division */
{.expected = {.tv_sec = 0, .tv_nsec = 1},
.observed = {.tv_sec = TIME_T_MAX / TIMESPEC_HZ,
.tv_nsec = TIMESPEC_HZ - 1},
.upper_bound = TIME_T_MAX, .lower_bound = 1, .result = 1,
},
};
static int
do_test (void)
{
int i = 0;
int ntests = sizeof (ns_cases) / sizeof (ns_cases[0]);
printf("Testing support_timespec_ns\n");
for (i = 0; i < ntests; i++)
{
printf("Test case %d\n", i);
TEST_COMPARE (support_timespec_ns (ns_cases[i].time),
ns_cases[i].time_ns);
}
ntests = sizeof (norm_cases) / sizeof (norm_cases[0]);
struct timespec result;
printf("Testing support_timespec_normalize\n");
for (i = 0; i < ntests; i++)
{
printf("Test case %d\n", i);
result = support_timespec_normalize (norm_cases[i].time);
TEST_COMPARE (norm_cases[i].norm.tv_sec, result.tv_sec);
TEST_COMPARE (norm_cases[i].norm.tv_nsec, result.tv_nsec);
}
ntests = sizeof (check_cases) / sizeof (check_cases[0]);
printf("Testing support_timespec_check_in_range\n");
for (i = 0; i < ntests; i++)
{
/* Its hard to find which test failed with just the TEST_COMPARE report.
So here we print every running testcase as well. */
printf("Test case %d\n", i);
TEST_COMPARE (support_timespec_check_in_range
(check_cases[i].expected, check_cases[i].observed,
check_cases[i].lower_bound,
check_cases[i].upper_bound), check_cases[i].result);
}
return 0;
}
#include <support/test-driver.c>
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