| 1 | |
| 2 |
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| 3 | #include <kunit/test.h>
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| 4 | #include <linux/rtc.h>
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| 5 |
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| 6 | |
| 7 | * Advance a date by one day.
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| 8 |
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| 9 | static void advance_date(int *year, int *month, int *mday, int *yday, int *wday)
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| 10 | {
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| 11 | *wday = (*wday + 1) % 7;
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| 12 |
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| 13 | if (*mday != rtc_month_days(*month - 1, *year)) {
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| 14 | ++*mday;
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| 15 | ++*yday;
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| 16 | return;
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| 17 | }
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| 18 |
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| 19 | *mday = 1;
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| 20 | if (*month != 12) {
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| 21 | ++*month;
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| 22 | ++*yday;
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| 23 | return;
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| 24 | }
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| 25 |
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| 26 | *month = 1;
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| 27 | *yday = 1;
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| 28 | ++*year;
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| 29 | }
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| 30 |
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| 31 | |
| 32 | * Check every day in specified number of years interval starting on 1970-01-01
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| 33 | * against the expected result.
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| 34 |
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| 35 | static void rtc_time64_to_tm_test_date_range(struct kunit *test, int years)
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| 36 | {
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| 37 | |
| 38 | * years = (years / 400) * 400 years
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| 39 | * = (years / 400) * 146097 days
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| 40 | * = (years / 400) * 146097 * 86400 seconds
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| 41 |
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| 42 | time64_t total_secs = ((time64_t)years) / 400 * 146097 * 86400;
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| 43 |
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| 44 | int year = 1900;
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| 45 | int month = 1;
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| 46 | int mday = 1;
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| 47 | int yday = 1;
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| 48 | int wday = 1;
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| 49 |
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| 50 | struct rtc_time result;
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| 51 | time64_t secs;
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| 52 | const time64_t sec_offset = RTC_TIMESTAMP_BEGIN_1900 + ((1 * 60) + 2) * 60 + 3;
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| 53 |
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| 54 | for (secs = 0; secs <= total_secs; secs += 86400) {
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| 55 |
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| 56 | rtc_time64_to_tm(secs + sec_offset, &result);
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| 57 |
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| 58 | #define FAIL_MSG "%d/%02d/%02d (%2d, %d) : %lld", \
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| 59 | year, month, mday, yday, wday, secs + sec_offset
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| 60 |
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| 61 | KUNIT_ASSERT_EQ_MSG(test, year - 1900, result.tm_year, FAIL_MSG);
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| 62 | KUNIT_ASSERT_EQ_MSG(test, month - 1, result.tm_mon, FAIL_MSG);
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| 63 | KUNIT_ASSERT_EQ_MSG(test, mday, result.tm_mday, FAIL_MSG);
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| 64 | KUNIT_ASSERT_EQ_MSG(test, yday, result.tm_yday, FAIL_MSG);
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| 65 | KUNIT_ASSERT_EQ_MSG(test, 1, result.tm_hour, FAIL_MSG);
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| 66 | KUNIT_ASSERT_EQ_MSG(test, 2, result.tm_min, FAIL_MSG);
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| 67 | KUNIT_ASSERT_EQ_MSG(test, 3, result.tm_sec, FAIL_MSG);
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| 68 | KUNIT_ASSERT_EQ_MSG(test, wday, result.tm_wday, FAIL_MSG);
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| 69 |
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| 70 | advance_date(&year, &month, &mday, &yday, &wday);
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| 71 | }
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| 72 | }
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| 73 |
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| 74 | |
| 75 | * Checks every day in a 160000 years interval starting on 1900-01-01
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| 76 | * against the expected result.
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| 77 |
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| 78 | static void rtc_time64_to_tm_test_date_range_160000(struct kunit *test)
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| 79 | {
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| 80 | rtc_time64_to_tm_test_date_range(test, 160000);
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| 81 | }
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| 82 |
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| 83 | |
| 84 | * Checks every day in a 1000 years interval starting on 1900-01-01
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| 85 | * against the expected result.
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| 86 |
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| 87 | static void rtc_time64_to_tm_test_date_range_1000(struct kunit *test)
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| 88 | {
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| 89 | rtc_time64_to_tm_test_date_range(test, 1000);
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| 90 | }
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| 91 |
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| 92 | static struct kunit_case rtc_lib_test_cases[] = {
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| 93 | KUNIT_CASE(rtc_time64_to_tm_test_date_range_1000),
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| 94 | KUNIT_CASE_SLOW(rtc_time64_to_tm_test_date_range_160000),
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| 95 | {}
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| 96 | };
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| 97 |
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| 98 | static struct kunit_suite rtc_lib_test_suite = {
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| 99 | .name = "rtc_lib_test_cases",
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| 100 | .test_cases = rtc_lib_test_cases,
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| 101 | };
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| 102 |
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| 103 | kunit_test_suite(rtc_lib_test_suite);
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| 104 |
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| 105 | MODULE_DESCRIPTION("KUnit test for RTC lib functions");
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| 106 | MODULE_LICENSE("GPL");
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