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a547c4ce10
Mark the time KUnit test, time64_to_tm_test_date_range, as slow using test attributes. This test ran relatively much slower than most other KUnit tests. By marking this test as slow, the test can now be filtered using the KUnit test attribute filtering feature. Example: --filter "speed>slow". This will run only the tests that have speeds faster than slow. The slow attribute will also be outputted in KTAP. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
99 lines
2 KiB
C
99 lines
2 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
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#include <kunit/test.h>
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#include <linux/time.h>
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/*
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* Traditional implementation of leap year evaluation.
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*/
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static bool is_leap(long year)
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{
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return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
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}
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/*
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* Gets the last day of a month.
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*/
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static int last_day_of_month(long year, int month)
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{
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if (month == 2)
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return 28 + is_leap(year);
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if (month == 4 || month == 6 || month == 9 || month == 11)
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return 30;
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return 31;
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}
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/*
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* Advances a date by one day.
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*/
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static void advance_date(long *year, int *month, int *mday, int *yday)
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{
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if (*mday != last_day_of_month(*year, *month)) {
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++*mday;
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++*yday;
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return;
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}
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*mday = 1;
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if (*month != 12) {
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++*month;
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++*yday;
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return;
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}
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*month = 1;
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*yday = 0;
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++*year;
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}
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/*
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* Checks every day in a 160000 years interval centered at 1970-01-01
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* against the expected result.
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*/
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static void time64_to_tm_test_date_range(struct kunit *test)
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{
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/*
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* 80000 years = (80000 / 400) * 400 years
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* = (80000 / 400) * 146097 days
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* = (80000 / 400) * 146097 * 86400 seconds
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*/
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time64_t total_secs = ((time64_t) 80000) / 400 * 146097 * 86400;
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long year = 1970 - 80000;
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int month = 1;
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int mdday = 1;
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int yday = 0;
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struct tm result;
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time64_t secs;
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s64 days;
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for (secs = -total_secs; secs <= total_secs; secs += 86400) {
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time64_to_tm(secs, 0, &result);
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days = div_s64(secs, 86400);
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#define FAIL_MSG "%05ld/%02d/%02d (%2d) : %ld", \
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year, month, mdday, yday, days
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KUNIT_ASSERT_EQ_MSG(test, year - 1900, result.tm_year, FAIL_MSG);
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KUNIT_ASSERT_EQ_MSG(test, month - 1, result.tm_mon, FAIL_MSG);
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KUNIT_ASSERT_EQ_MSG(test, mdday, result.tm_mday, FAIL_MSG);
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KUNIT_ASSERT_EQ_MSG(test, yday, result.tm_yday, FAIL_MSG);
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advance_date(&year, &month, &mdday, &yday);
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}
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}
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static struct kunit_case time_test_cases[] = {
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KUNIT_CASE_SLOW(time64_to_tm_test_date_range),
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{}
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};
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static struct kunit_suite time_test_suite = {
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.name = "time_test_cases",
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.test_cases = time_test_cases,
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};
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kunit_test_suite(time_test_suite);
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MODULE_LICENSE("GPL");
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