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tests: Test dates outside of 32-bit Unix range

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Add tests outside the date range possible with 32-bit time calculation.

Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Signed-off-by: Andrew Hamilton <adhamilt@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Vladimir Serbinenko 2025-08-27 17:32:14 -05:00 committed by Daniel Kiper
parent 6837293b87
commit dfa3dbf61e
1 changed files with 66 additions and 9 deletions
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75
tests/date_unit_test.c
View File

@ -25,12 +25,13 @@
#include <grub/test.h>
static void
date_test (grub_int32_t v)
date_test (grub_int64_t v)
{
struct grub_datetime dt;
time_t t = v;
struct tm *g;
int w;
grub_int64_t back = 0;
g = gmtime (&t);
@ -38,28 +39,56 @@ date_test (grub_int32_t v)
w = grub_get_weekday (&dt);
grub_test_assert (g->tm_sec == dt.second, "time %d bad second: %d vs %d", v,
grub_datetime2unixtime (&dt, &back);
grub_test_assert (g->tm_sec == dt.second, "time %lld bad second: %d vs %d", (long long) v,
g->tm_sec, dt.second);
grub_test_assert (g->tm_min == dt.minute, "time %d bad minute: %d vs %d", v,
grub_test_assert (g->tm_min == dt.minute, "time %lld bad minute: %d vs %d", (long long) v,
g->tm_min, dt.minute);
grub_test_assert (g->tm_hour == dt.hour, "time %d bad hour: %d vs %d", v,
grub_test_assert (g->tm_hour == dt.hour, "time %lld bad hour: %d vs %d", (long long) v,
g->tm_hour, dt.hour);
grub_test_assert (g->tm_mday == dt.day, "time %d bad day: %d vs %d", v,
grub_test_assert (g->tm_mday == dt.day, "time %lld bad day: %d vs %d", (long long) v,
g->tm_mday, dt.day);
grub_test_assert (g->tm_mon + 1 == dt.month, "time %d bad month: %d vs %d", v,
grub_test_assert (g->tm_mon + 1 == dt.month, "time %lld bad month: %d vs %d",(long long) v,
g->tm_mon + 1, dt.month);
grub_test_assert (g->tm_year + 1900 == dt.year,
"time %d bad year: %d vs %d", v,
"time %lld bad year: %d vs %d", (long long) v,
g->tm_year + 1900, dt.year);
grub_test_assert (g->tm_wday == w, "time %d bad week day: %d vs %d", v,
grub_test_assert (g->tm_wday == w, "time %lld bad week day: %d vs %d", (long long) v,
g->tm_wday, w);
grub_test_assert (back == v, "time %lld bad back transform: %lld", (long long) v,
(long long) back);
}
static void
date_test_iter (void)
{
grub_int32_t tests[] = { -1, 0, +1, -2133156255, GRUB_INT32_MIN,
/*
* Test several interesting UNIX timestamps in 32-bit time:
* 1. -1: 1969-12-31 23:59:59 - Just before EPOCH
* 2. 0: 1970-01-01 00:00:00 - EPOCH
* 3. +1: 1970-01-01 00:00:01 - Just after EPOCH
* 4. 978224552: 2000-12-31 01:02:32 - Leap year, after Feb
* 5. -2133156255: 1902-05-28 16:35:45 - Nominal value
* 6. -2110094321: 1903-02-19 14:41:19 - Nominal value
* 7. GRUB_INT32_MIN: 1901-12-13 20:45:52 - 32-bit Min value
* 8. GRUB_INT32_MAX: 2038-01-19 03:14:07 - 32-bit Max value
*/
grub_int32_t tests[] = { -1, 0, +1, 978224552, -2133156255, -2110094321, GRUB_INT32_MIN,
GRUB_INT32_MAX };
/*
* Test several known UNIX timestamps outside 32-bit time:
* 1. 5774965200: 2152-12-31 21:00:00 - Leap year
* 2. 4108700725: 2100-03-14 09:45:25 - Not a leap year
* 3. -5029179792: 1810-08-19 21:36:48 - Not a leap year
* 4. -62135596799: 0001-01-01 00:00:00 - Minimum AD
* 5. 253402300799: 9999-12-31 23:59:59 - Maximum 4 digit year
*/
grub_int64_t tests64[] = { (grub_int64_t) 5774965200,
(grub_int64_t) 4108700725,
(grub_int64_t) -5029179792,
(grub_int64_t) -62135596799,
(grub_int64_t) 253402300799 };
unsigned i;
for (i = 0; i < ARRAY_SIZE (tests); i++)
@ -71,6 +100,34 @@ date_test_iter (void)
date_test (x);
date_test (-x);
}
if (sizeof (time_t) > 4)
{
for (i = 0; i < ARRAY_SIZE (tests64); i++)
date_test (tests64[i]);
for (i = 0; i < 5000000; i++)
{
/*
* Test some pseudo-random dates/times between 1970 and 9999
* "117" is used to scale the random 32-bit int from range
* 0..2147483648 to 0..251255586816. This is reasonably
* close to max 9999 date represented by 253402300799.
*/
grub_int64_t x = (grub_int64_t) rand () * (grub_int64_t) 117;
date_test (x);
}
for (i = 0; i < 5000000; i++)
{
/*
* Test some pseudo-random dates/times between 0001 and 1969
* "-28" is used to scale the random 32-bit int from range
* 0..2147483648 to -60129542144..0. This is reasonably
* close to min 0001 date represented by -62135596799.
*/
grub_int64_t x = (grub_int64_t) rand () * (grub_int64_t) -28;
date_test (x);
}
}
}
GRUB_UNIT_TEST ("date_unit_test", date_test_iter);