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lib: Fix some issues in timeutils 

In particular, dates prior to Mar 1, 2000 are screwed up.

The easiest way to see this is to do:

>>> import time
>>> time.localtime(0)
(2000, 1, 1, 0, 0, 0, 5, 1)
>>> time.localtime(1)
(2000, 1, 2, 233, 197, 197, 6, 2)

With this patch, we instead get:
>>> import time
>>> time.localtime(1)
(2000, 1, 1, 0, 0, 1, 5, 1)

Doh - In C % is NOT a modulo operator, it's a remainder operator.
This commit is contained in:
Dave Hylands 2015-05-18 08:26:58 -07:00 committed by Paul Sokolovsky
parent 6f1cffeb28
commit a3a14b9db7
3 changed files with 37 additions and 0 deletions
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4
lib/timeutils/timeutils.c
View File

@ -73,6 +73,10 @@ void timeutils_seconds_since_2000_to_struct_time(mp_uint_t t, timeutils_struct_t
mp_int_t days = seconds / 86400;
seconds %= 86400;
if (seconds < 0) {
seconds += 86400;
days -= 1;
}
tm->tm_hour = seconds / 3600;
tm->tm_min = seconds / 60 % 60;
tm->tm_sec = seconds % 60;

21
tests/pyb/modtime.py
View File

@ -35,4 +35,25 @@ def test():
yday += 1
wday = (wday + 1) % 7
def spot_test(seconds, expected_time):
actual_time = time.localtime(seconds)
for i in range(len(actual_time)):
if actual_time[i] != expected_time[i]:
print("time.localtime(", seconds, ") returned", actual_time, "expecting", expected_time)
return
print("time.localtime(", seconds, ") returned", actual_time, "(pass)")
test()
spot_test( 0, (2000, 1, 1, 0, 0, 0, 5, 1))
spot_test( 1, (2000, 1, 1, 0, 0, 1, 5, 1))
spot_test( 59, (2000, 1, 1, 0, 0, 59, 5, 1))
spot_test( 60, (2000, 1, 1, 0, 1, 0, 5, 1))
spot_test( 3599, (2000, 1, 1, 0, 59, 59, 5, 1))
spot_test( 3600, (2000, 1, 1, 1, 0, 0, 5, 1))
spot_test( -1, (1999, 12, 31, 23, 59, 59, 4, 365))
spot_test( 447549467, (2014, 3, 7, 23, 17, 47, 4, 66))
spot_test( -940984933, (1970, 3, 7, 23, 17, 47, 5, 66))
spot_test(-1072915199, (1966, 1, 1, 0, 0, 1, 5, 1))
spot_test(-1072915200, (1966, 1, 1, 0, 0, 0, 5, 1))
spot_test(-1072915201, (1965, 12, 31, 23, 59, 59, 4, 365))

12
tests/pyb/modtime.py.exp
View File

@ -32,3 +32,15 @@ Testing 2030
Testing 2031
Testing 2032
Testing 2033
time.localtime( 0 ) returned (2000, 1, 1, 0, 0, 0, 5, 1) (pass)
time.localtime( 1 ) returned (2000, 1, 1, 0, 0, 1, 5, 1) (pass)
time.localtime( 59 ) returned (2000, 1, 1, 0, 0, 59, 5, 1) (pass)
time.localtime( 60 ) returned (2000, 1, 1, 0, 1, 0, 5, 1) (pass)
time.localtime( 3599 ) returned (2000, 1, 1, 0, 59, 59, 5, 1) (pass)
time.localtime( 3600 ) returned (2000, 1, 1, 1, 0, 0, 5, 1) (pass)
time.localtime( -1 ) returned (1999, 12, 31, 23, 59, 59, 4, 365) (pass)
time.localtime( 447549467 ) returned (2014, 3, 7, 23, 17, 47, 4, 66) (pass)
time.localtime( -940984933 ) returned (1970, 3, 7, 23, 17, 47, 5, 66) (pass)
time.localtime( -1072915199 ) returned (1966, 1, 1, 0, 0, 1, 5, 1) (pass)
time.localtime( -1072915200 ) returned (1966, 1, 1, 0, 0, 0, 5, 1) (pass)
time.localtime( -1072915201 ) returned (1965, 12, 31, 23, 59, 59, 4, 365) (pass)