def _build_date_header_string(self, date_value):
"""Gets the date_value (may be None, basestring, float or
datetime.datetime instance) and returns a valid date string as per
RFC 2822."""
if isinstance(date_value, datetime):
date_value = time.mktime(date_value.timetuple())
if not isinstance(date_value, basestring):
date_value = formatdate(date_value, localtime=True)
return date_value
def test_date_can_be_set_as_float(self):
expected_date = datetime(2008, 12, 26, 12, 55)
expected_time = time.mktime(expected_date.timetuple())
self.message.date = expected_time
msg = email.message_from_string(str(self.message))
header_string = msg['Date']
header_date = self._date_header_to_utc_datetime(header_string)
self.assertEqual(self.localdate_to_utc(expected_date), header_date)
expected_datestring = formatdate(expected_time, localtime=True)
self.assertEqual(expected_datestring, header_string)
def localdate_to_utc(self, localdate):
local_epoch_seconds = time.mktime(localdate.timetuple())
date_string = formatdate(local_epoch_seconds, localtime=True)
return self._date_header_to_utc_datetime(date_string)
