def test_localize_without_timezone_should_add_utc_timezone(self):
dt = datetime.datetime(1970, 1, 1, 0, 0, 0, 0, None)
result = utils.localize_to_utc(dt)
self.assertEqual(result, datetime.datetime(1970, 1, 1, 0, 0, 0, 0, utils.utc))
self.assertEqual(result.tzinfo, utils.utc)
def test_localize_with_cet_timezone_should_convert_to_utc_timezone(self):
dt = datetime.datetime(1970, 1, 1, 0, 0, 0, 0, utils.cet)
result = utils.localize_to_utc(dt)
self.assertEqual(result, datetime.datetime(1969, 12, 31, 23, 0, 0, 0, utils.utc))
self.assertEqual(result.tzinfo, utils.utc)
def test_localize_none(self):
dt = None
result = utils.localize_to_utc(dt)
self.assertIsNone(result)
