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-rw-r--r--contrib/ntp/tests/libntp/calendar.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/contrib/ntp/tests/libntp/calendar.c b/contrib/ntp/tests/libntp/calendar.c
index 9d25c41b1688..b631565c0c8f 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
+}