def test_posixts_to_ndays():
jan_1_2015_t = packet.dt_to_time_t(dt.datetime(2015, 1, 1,
tzinfo=pytz.UTC))
eq_(packet.posixts_to_ndays(jan_1_2015_t), 0)
jan_1_2016_t = packet.dt_to_time_t(dt.datetime(2016, 1, 1,
tzinfo=pytz.UTC))
eq_(packet.posixts_to_ndays(jan_1_2016_t), 365)
def test_expiration_is_invertible():
# It can be surprising if the expiration date changes when you write
# it to the cartridge and read it back. So, let's at least make sure
# that the default expiration date can be read back without changing.
expiration_date = packet.v2_defaults(1)['expiration_date']
eq_(expiration_date,
packet.ndays_to_posixts(packet.posixts_to_ndays(expiration_date)))
def test_expiration_date_ndays():
'''Comprehensively test that dates are converted to ndays and back.'''
# Test every date from the first date that can be represented using ndays
# to an arbitrary date in the future.
earliest = packet.JAN_1_2015_UTC
until = FAR_FUTURE
# Generate every date in the range.
for a_dt in dur.rrule(du.rrule.DAILY, dtstart=earliest, until=until):
ts_in = packet.date_to_posixts(a_dt)
ndays = packet.posixts_to_ndays(ts_in)
ts_out = packet.ndays_to_posixts(ndays)
eq_(a_dt.date(), packet.posixts_to_date(ts_out))
def test_ndays_utc_round_trip():
# For a round-trip calculation to work, you must choose a number that
# is evenly divisible by (24 * 60 * 60)
utc_date = 3999974400
eq_(packet.ndays_to_posixts(packet.posixts_to_ndays(utc_date)), utc_date)
def test_posix_to_ndays_jan1():
jan_1_2014_t = packet.dt_to_time_t(dt.datetime(2014, 1, 1,
tzinfo=pytz.UTC))
eq_(packet.posixts_to_ndays(jan_1_2014_t), 0)