zulip/zerver/tests/test_timestamp.py

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2017-02-28 18:39:36 +01:00
from __future__ import absolute_import
from django.utils import timezone
from zerver.lib.test_classes import ZulipTestCase
from zerver.lib.timestamp import floor_to_hour, floor_to_day, ceiling_to_hour, \
ceiling_to_day, timestamp_to_datetime, datetime_to_timestamp, \
TimezoneNotUTCException
from datetime import datetime, timedelta
from dateutil import parser
import pytz
from six.moves import zip
class TestTimestamp(ZulipTestCase):
def test_datetime_and_timestamp_conversions(self):
# type: () -> None
timestamp = 1483228800
for dt in [
parser.parse('2017-01-01 00:00:00.123 UTC'),
parser.parse('2017-01-01 00:00:00.123').replace(tzinfo=timezone.utc),
parser.parse('2017-01-01 00:00:00.123').replace(tzinfo=pytz.utc)]:
self.assertEqual(timestamp_to_datetime(timestamp), dt-timedelta(microseconds=123000))
self.assertEqual(datetime_to_timestamp(dt), timestamp)
for dt in [
parser.parse('2017-01-01 00:00:00.123+01:00'),
parser.parse('2017-01-01 00:00:00.123')]:
with self.assertRaises(TimezoneNotUTCException):
datetime_to_timestamp(dt)