diff options
Diffstat (limited to 'contrib/ntp/tests/libntp/calendar.c')
| -rw-r--r-- | contrib/ntp/tests/libntp/calendar.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/contrib/ntp/tests/libntp/calendar.c b/contrib/ntp/tests/libntp/calendar.c index 9d25c41..b631565 100644 --- a/contrib/ntp/tests/libntp/calendar.c +++ b/contrib/ntp/tests/libntp/calendar.c @@ -2,6 +2,7 @@ #include "ntp_stdlib.h" /* test fail without this include, for some reason */ #include "ntp_calendar.h" +#include "ntp_unixtime.h" #include "unity.h" #include <string.h> @@ -19,6 +20,7 @@ char * DateFromCalToString(const struct calendar *cal); char * DateFromIsoToString(const struct isodate *iso); int IsEqualDateCal(const struct calendar *expected, const struct calendar *actual); int IsEqualDateIso(const struct isodate *expected, const struct isodate *actual); + void test_DaySplitMerge(void); void test_SplitYearDays1(void); void test_SplitYearDays2(void); @@ -35,6 +37,8 @@ void test_IsoCalWeeksToYearStart(void); void test_IsoCalWeeksToYearEnd(void); void test_DaySecToDate(void); +void test_NtpToNtp(void); +void test_NtpToTime(void); void setUp(void) @@ -608,3 +612,126 @@ test_DaySecToDate(void) return; } + +/* -------------------------------------------------------------------- + * unfolding of (truncated) NTP time stamps to full 64bit values. + * + * Note: These tests need a 64bit time_t to be useful. + */ + +void +test_NtpToNtp(void) +{ +# if SIZEOF_TIME_T <= 4 + + TEST_IGNORE_MESSAGE("test only useful for sizeof(time_t) > 4, skipped"); + +# else + + static const uint32_t ntp_vals[6] = { + UINT32_C(0x00000000), + UINT32_C(0x00000001), + UINT32_C(0x7FFFFFFF), + UINT32_C(0x80000000), + UINT32_C(0x80000001), + UINT32_C(0xFFFFFFFF) + }; + + static char lbuf[128]; + vint64 hold; + time_t pivot, texp, diff; + int loops, iloop; + + pivot = 0; + for (loops = 0; loops < 16; ++loops) { + for (iloop = 0; iloop < 6; ++iloop) { + hold = ntpcal_ntp_to_ntp( + ntp_vals[iloop], &pivot); + texp = vint64_to_time(&hold); + + /* constraint 1: texp must be in the + * (right-open) intervall [p-(2^31), p+(2^31)[, + * but the pivot 'p' must be taken in full NTP + * time scale! + */ + diff = texp - (pivot + JAN_1970); + snprintf(lbuf, sizeof(lbuf), + "bounds check: piv=%lld exp=%lld dif=%lld", + (long long)pivot, + (long long)texp, + (long long)diff); + TEST_ASSERT_MESSAGE((diff >= INT32_MIN) && (diff <= INT32_MAX), + lbuf); + + /* constraint 2: low word must be equal to + * input + */ + snprintf(lbuf, sizeof(lbuf), + "low check: ntp(in)=$%08lu ntp(out[0:31])=$%08lu", + (unsigned long)ntp_vals[iloop], + (unsigned long)hold.D_s.lo); + TEST_ASSERT_EQUAL_MESSAGE(ntp_vals[iloop], hold.D_s.lo, lbuf); + } + pivot += 0x20000000; + } +# endif +} + +void +test_NtpToTime(void) +{ +# if SIZEOF_TIME_T <= 4 + + TEST_IGNORE_MESSAGE("test only useful for sizeof(time_t) > 4, skipped"); + +# else + + static const uint32_t ntp_vals[6] = { + UINT32_C(0x00000000), + UINT32_C(0x00000001), + UINT32_C(0x7FFFFFFF), + UINT32_C(0x80000000), + UINT32_C(0x80000001), + UINT32_C(0xFFFFFFFF) + }; + + static char lbuf[128]; + vint64 hold; + time_t pivot, texp, diff; + uint32_t back; + int loops, iloop; + + pivot = 0; + for (loops = 0; loops < 16; ++loops) { + for (iloop = 0; iloop < 6; ++iloop) { + hold = ntpcal_ntp_to_time( + ntp_vals[iloop], &pivot); + texp = vint64_to_time(&hold); + + /* constraint 1: texp must be in the + * (right-open) intervall [p-(2^31), p+(2^31)[ + */ + diff = texp - pivot; + snprintf(lbuf, sizeof(lbuf), + "bounds check: piv=%lld exp=%lld dif=%lld", + (long long)pivot, + (long long)texp, + (long long)diff); + TEST_ASSERT_MESSAGE((diff >= INT32_MIN) && (diff <= INT32_MAX), + lbuf); + + /* constraint 2: conversion from full time back + * to truncated NTP time must yield same result + * as input. + */ + back = (uint32_t)texp + JAN_1970; + snprintf(lbuf, sizeof(lbuf), + "modulo check: ntp(in)=$%08lu ntp(out)=$%08lu", + (unsigned long)ntp_vals[iloop], + (unsigned long)back); + TEST_ASSERT_EQUAL_MESSAGE(ntp_vals[iloop], back, lbuf); + } + pivot += 0x20000000; + } +# endif +} |
