mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
5546e3dfb6
As the documentation states, "The exact license information can only be determined via the license information in the corresponding source files." and the SPDX identifier has the proper information. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210810212008.631359-1-alexandre.belloni@bootlin.com
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
|
|
|
|
#include <kunit/test.h>
|
|
#include <linux/rtc.h>
|
|
|
|
/*
|
|
* Advance a date by one day.
|
|
*/
|
|
static void advance_date(int *year, int *month, int *mday, int *yday)
|
|
{
|
|
if (*mday != rtc_month_days(*month - 1, *year)) {
|
|
++*mday;
|
|
++*yday;
|
|
return;
|
|
}
|
|
|
|
*mday = 1;
|
|
if (*month != 12) {
|
|
++*month;
|
|
++*yday;
|
|
return;
|
|
}
|
|
|
|
*month = 1;
|
|
*yday = 1;
|
|
++*year;
|
|
}
|
|
|
|
/*
|
|
* Checks every day in a 160000 years interval starting on 1970-01-01
|
|
* against the expected result.
|
|
*/
|
|
static void rtc_time64_to_tm_test_date_range(struct kunit *test)
|
|
{
|
|
/*
|
|
* 160000 years = (160000 / 400) * 400 years
|
|
* = (160000 / 400) * 146097 days
|
|
* = (160000 / 400) * 146097 * 86400 seconds
|
|
*/
|
|
time64_t total_secs = ((time64_t) 160000) / 400 * 146097 * 86400;
|
|
|
|
int year = 1970;
|
|
int month = 1;
|
|
int mday = 1;
|
|
int yday = 1;
|
|
|
|
struct rtc_time result;
|
|
time64_t secs;
|
|
s64 days;
|
|
|
|
for (secs = 0; secs <= total_secs; secs += 86400) {
|
|
|
|
rtc_time64_to_tm(secs, &result);
|
|
|
|
days = div_s64(secs, 86400);
|
|
|
|
#define FAIL_MSG "%d/%02d/%02d (%2d) : %ld", \
|
|
year, month, mday, yday, days
|
|
|
|
KUNIT_ASSERT_EQ_MSG(test, year - 1900, result.tm_year, FAIL_MSG);
|
|
KUNIT_ASSERT_EQ_MSG(test, month - 1, result.tm_mon, FAIL_MSG);
|
|
KUNIT_ASSERT_EQ_MSG(test, mday, result.tm_mday, FAIL_MSG);
|
|
KUNIT_ASSERT_EQ_MSG(test, yday, result.tm_yday, FAIL_MSG);
|
|
|
|
advance_date(&year, &month, &mday, &yday);
|
|
}
|
|
}
|
|
|
|
static struct kunit_case rtc_lib_test_cases[] = {
|
|
KUNIT_CASE(rtc_time64_to_tm_test_date_range),
|
|
{}
|
|
};
|
|
|
|
static struct kunit_suite rtc_lib_test_suite = {
|
|
.name = "rtc_lib_test_cases",
|
|
.test_cases = rtc_lib_test_cases,
|
|
};
|
|
|
|
kunit_test_suite(rtc_lib_test_suite);
|
|
|
|
MODULE_LICENSE("GPL");
|