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-rw-r--r--tests/libntp/calendar.cpp337
1 files changed, 337 insertions, 0 deletions
diff --git a/tests/libntp/calendar.cpp b/tests/libntp/calendar.cpp
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--- /dev/null
+++ b/tests/libntp/calendar.cpp
@@ -0,0 +1,337 @@
+#include "libntptest.h"
+
+extern "C" {
+#include "ntp_calendar.h"
+}
+
+#include <string>
+#include <sstream>
+
+class calendarTest : public libntptest {
+protected:
+ static int leapdays(int year);
+
+ std::string CalendarToString(const calendar &cal);
+ std::string CalendarToString(const isodate &iso);
+ ::testing::AssertionResult IsEqual(const calendar &expected, const calendar &actual);
+ ::testing::AssertionResult IsEqual(const isodate &expected, const isodate &actual);
+
+ std::string DateToString(const calendar &cal);
+ std::string DateToString(const isodate &iso);
+ ::testing::AssertionResult IsEqualDate(const calendar &expected, const calendar &actual);
+ ::testing::AssertionResult IsEqualDate(const isodate &expected, const isodate &actual);
+};
+
+
+// ---------------------------------------------------------------------
+// test support stuff
+// ---------------------------------------------------------------------
+int
+calendarTest::leapdays(int year)
+{
+ if (year % 400 == 0)
+ return 1;
+ if (year % 100 == 0)
+ return 0;
+ if (year % 4 == 0)
+ return 1;
+ return 0;
+}
+
+std::string
+calendarTest::CalendarToString(const calendar &cal) {
+ std::ostringstream ss;
+ ss << cal.year << "-" << (u_int)cal.month << "-" << (u_int)cal.monthday
+ << " (" << cal.yearday << ") " << (u_int)cal.hour << ":"
+ << (u_int)cal.minute << ":" << (u_int)cal.second;
+ return ss.str();
+}
+
+std::string
+calendarTest:: CalendarToString(const isodate &iso) {
+ std::ostringstream ss;
+ ss << iso.year << "-" << (u_int)iso.week << "-" << (u_int)iso.weekday
+ << (u_int)iso.hour << ":" << (u_int)iso.minute << ":" << (u_int)iso.second;
+ return ss.str();
+}
+
+::testing::AssertionResult
+calendarTest:: IsEqual(const calendar &expected, const calendar &actual) {
+ if (expected.year == actual.year &&
+ (!expected.yearday || expected.yearday == actual.yearday) &&
+ expected.month == actual.month &&
+ expected.monthday == actual.monthday &&
+ expected.hour == actual.hour &&
+ expected.minute == actual.minute &&
+ expected.second == actual.second) {
+ return ::testing::AssertionSuccess();
+ } else {
+ return ::testing::AssertionFailure()
+ << "expected: " << CalendarToString(expected) << " but was "
+ << CalendarToString(actual);
+ }
+}
+
+::testing::AssertionResult
+calendarTest:: IsEqual(const isodate &expected, const isodate &actual) {
+ if (expected.year == actual.year &&
+ expected.week == actual.week &&
+ expected.weekday == actual.weekday &&
+ expected.hour == actual.hour &&
+ expected.minute == actual.minute &&
+ expected.second == actual.second) {
+ return ::testing::AssertionSuccess();
+ } else {
+ return ::testing::AssertionFailure()
+ << "expected: " << CalendarToString(expected) << " but was "
+ << CalendarToString(actual);
+ }
+}
+
+std::string
+calendarTest:: DateToString(const calendar &cal) {
+ std::ostringstream ss;
+ ss << cal.year << "-" << (u_int)cal.month << "-" << (u_int)cal.monthday
+ << " (" << cal.yearday << ")";
+ return ss.str();
+}
+
+std::string
+calendarTest:: DateToString(const isodate &iso) {
+ std::ostringstream ss;
+ ss << iso.year << "-" << (u_int)iso.week << "-" << (u_int)iso.weekday;
+ return ss.str();
+}
+
+::testing::AssertionResult
+calendarTest:: IsEqualDate(const calendar &expected, const calendar &actual) {
+ if (expected.year == actual.year &&
+ (!expected.yearday || expected.yearday == actual.yearday) &&
+ expected.month == actual.month &&
+ expected.monthday == actual.monthday) {
+ return ::testing::AssertionSuccess();
+ } else {
+ return ::testing::AssertionFailure()
+ << "expected: " << DateToString(expected) << " but was "
+ << DateToString(actual);
+ }
+}
+
+::testing::AssertionResult
+calendarTest:: IsEqualDate(const isodate &expected, const isodate &actual) {
+ if (expected.year == actual.year &&
+ expected.week == actual.week &&
+ expected.weekday == actual.weekday) {
+ return ::testing::AssertionSuccess();
+ } else {
+ return ::testing::AssertionFailure()
+ << "expected: " << DateToString(expected) << " but was "
+ << DateToString(actual);
+ }
+}
+
+
+// ---------------------------------------------------------------------
+// test cases
+// ---------------------------------------------------------------------
+static const u_short real_month_table[2][13] = {
+ /* -*- table for regular years -*- */
+ { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
+ /* -*- table for leap years -*- */
+ { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
+};
+
+// days in month, with one month wrap-around at both ends
+static const u_short real_month_days[2][14] = {
+ /* -*- table for regular years -*- */
+ { 31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 31 },
+ /* -*- table for leap years -*- */
+ { 31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 31 }
+};
+
+// test the day/sec join & split ops, making sure that 32bit
+// intermediate results would definitely overflow and the hi DWORD of
+// the 'vint64' is definitely needed.
+TEST_F(calendarTest, DaySplitMerge) {
+ for (int32 day = -1000000; day <= 1000000; day += 100) {
+ for (int32 sec = -100000; sec <= 186400; sec += 10000) {
+ vint64 merge = ntpcal_dayjoin(day, sec);
+ ntpcal_split split = ntpcal_daysplit(&merge);
+ int32 eday = day;
+ int32 esec = sec;
+
+ while (esec >= 86400) {
+ eday += 1;
+ esec -= 86400;
+ }
+ while (esec < 0) {
+ eday -= 1;
+ esec += 86400;
+ }
+
+ EXPECT_EQ(eday, split.hi);
+ EXPECT_EQ(esec, split.lo);
+ }
+ }
+}
+
+TEST_F(calendarTest, SplitYearDays1) {
+ for (int32 eyd = -1; eyd <= 365; eyd++) {
+ ntpcal_split split = ntpcal_split_yeardays(eyd, 0);
+ if (split.lo >= 0 && split.hi >= 0) {
+ EXPECT_GT(12, split.hi);
+ EXPECT_GT(real_month_days[0][split.hi+1], split.lo);
+ int32 tyd = real_month_table[0][split.hi] + split.lo;
+ EXPECT_EQ(eyd, tyd);
+ } else
+ EXPECT_TRUE(eyd < 0 || eyd > 364);
+ }
+}
+
+TEST_F(calendarTest, SplitYearDays2) {
+ for (int32 eyd = -1; eyd <= 366; eyd++) {
+ ntpcal_split split = ntpcal_split_yeardays(eyd, 1);
+ if (split.lo >= 0 && split.hi >= 0) {
+ EXPECT_GT(12, split.hi);
+ EXPECT_GT(real_month_days[1][split.hi+1], split.lo);
+ int32 tyd = real_month_table[1][split.hi] + split.lo;
+ EXPECT_EQ(eyd, tyd);
+ } else
+ EXPECT_TRUE(eyd < 0 || eyd > 365);
+ }
+}
+
+TEST_F(calendarTest, RataDie1) {
+ int32 testDate = 1; // 0001-01-01 (proleptic date)
+ calendar expected = { 1, 1, 1, 1 };
+ calendar actual;
+
+ ntpcal_rd_to_date(&actual, testDate);
+ EXPECT_TRUE(IsEqualDate(expected, actual));
+}
+
+// check last day of february for first 10000 years
+TEST_F(calendarTest, LeapYears1) {
+ calendar dateIn, dateOut;
+
+ for (dateIn.year = 1; dateIn.year < 10000; ++dateIn.year) {
+ dateIn.month = 2;
+ dateIn.monthday = 28 + leapdays(dateIn.year);
+ dateIn.yearday = 31 + dateIn.monthday;
+
+ ntpcal_rd_to_date(&dateOut, ntpcal_date_to_rd(&dateIn));
+
+ EXPECT_TRUE(IsEqualDate(dateIn, dateOut));
+ }
+}
+
+// check first day of march for first 10000 years
+TEST_F(calendarTest, LeapYears2) {
+ calendar dateIn, dateOut;
+
+ for (dateIn.year = 1; dateIn.year < 10000; ++dateIn.year) {
+ dateIn.month = 3;
+ dateIn.monthday = 1;
+ dateIn.yearday = 60 + leapdays(dateIn.year);
+
+ ntpcal_rd_to_date(&dateOut, ntpcal_date_to_rd(&dateIn));
+ EXPECT_TRUE(IsEqualDate(dateIn, dateOut));
+ }
+}
+
+// Full roundtrip for 1601-01-01 to 2400-12-31
+// checks sequence of rata die numbers and validates date output
+// (since the input is all nominal days of the calendar in that range
+// and the result of the inverse calculation must match the input no
+// invalid output can occur.)
+TEST_F(calendarTest, RoundTripDate) {
+ calendar truDate, expDate = { 1600, 0, 12, 31 };;
+ int32 truRdn, expRdn = ntpcal_date_to_rd(&expDate);
+ int leaps;
+
+ while (expDate.year < 2400) {
+ expDate.year++;
+ expDate.month = 0;
+ expDate.yearday = 0;
+ leaps = leapdays(expDate.year);
+ while (expDate.month < 12) {
+ expDate.month++;
+ expDate.monthday = 0;
+ while (expDate.monthday < real_month_days[leaps][expDate.month]) {
+ expDate.monthday++;
+ expDate.yearday++;
+ expRdn++;
+
+ truRdn = ntpcal_date_to_rd(&expDate);
+ EXPECT_EQ(expRdn, truRdn);
+
+ ntpcal_rd_to_date(&truDate, truRdn);
+ EXPECT_TRUE(IsEqualDate(expDate, truDate));
+ }
+ }
+ }
+}
+
+// Roundtrip testing on calyearstart
+TEST_F(calendarTest, RoundTripYearStart) {
+ static const time_t pivot = 0;
+ u_int32 ntp, expys, truys;
+ calendar date;
+
+ for (ntp = 0; ntp < 0xFFFFFFFFu - 30000000u; ntp += 30000000u) {
+ truys = calyearstart(ntp, &pivot);
+ ntpcal_ntp_to_date(&date, ntp, &pivot);
+ date.month = date.monthday = 1;
+ date.hour = date.minute = date.second = 0;
+ expys = ntpcal_date_to_ntp(&date);
+ EXPECT_EQ(expys, truys);
+ }
+}
+
+// Roundtrip testing on calymonthstart
+TEST_F(calendarTest, RoundTripMonthStart) {
+ static const time_t pivot = 0;
+ u_int32 ntp, expms, trums;
+ calendar date;
+
+ for (ntp = 0; ntp < 0xFFFFFFFFu - 2000000u; ntp += 2000000u) {
+ trums = calmonthstart(ntp, &pivot);
+ ntpcal_ntp_to_date(&date, ntp, &pivot);
+ date.monthday = 1;
+ date.hour = date.minute = date.second = 0;
+ expms = ntpcal_date_to_ntp(&date);
+ EXPECT_EQ(expms, trums);
+ }
+}
+
+// Roundtrip testing on calweekstart
+TEST_F(calendarTest, RoundTripWeekStart) {
+ static const time_t pivot = 0;
+ u_int32 ntp, expws, truws;
+ isodate date;
+
+ for (ntp = 0; ntp < 0xFFFFFFFFu - 600000u; ntp += 600000u) {
+ truws = calweekstart(ntp, &pivot);
+ isocal_ntp_to_date(&date, ntp, &pivot);
+ date.hour = date.minute = date.second = 0;
+ date.weekday = 1;
+ expws = isocal_date_to_ntp(&date);
+ EXPECT_EQ(expws, truws);
+ }
+}
+
+// Roundtrip testing on caldaystart
+TEST_F(calendarTest, RoundTripDayStart) {
+ static const time_t pivot = 0;
+ u_int32 ntp, expds, truds;
+ calendar date;
+
+ for (ntp = 0; ntp < 0xFFFFFFFFu - 80000u; ntp += 80000u) {
+ truds = caldaystart(ntp, &pivot);
+ ntpcal_ntp_to_date(&date, ntp, &pivot);
+ date.hour = date.minute = date.second = 0;
+ expds = ntpcal_date_to_ntp(&date);
+ EXPECT_EQ(expds, truds);
+ }
+}
+
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