def test_parse_date(self):
# Valid inputs
self.assertEqual(parse_date('2012-04-23'), date(2012, 4, 23))
self.assertEqual(parse_date('2012-4-9'), date(2012, 4, 9))
# Invalid inputs
self.assertEqual(parse_date('20120423'), None)
self.assertRaises(ValueError, parse_date, '2012-04-56')
def convert_values(self, value, field):
"""SQLite returns floats when it should be returning decimals,
and gets dates and datetimes wrong.
For consistency with other backends, coerce when required.
"""
internal_type = field.get_internal_type()
if internal_type == 'DecimalField':
return util.typecast_decimal(field.format_number(value))
elif internal_type and internal_type.endswith('IntegerField') or internal_type == 'AutoField':
return int(value)
elif internal_type == 'DateField':
return parse_date(value)
elif internal_type == 'DateTimeField':
return parse_datetime_with_timezone_support(value)
elif internal_type == 'TimeField':
return parse_time(value)
# No field, or the field isn't known to be a decimal or integer
return value
def to_python(self, value):
if value is None:
return value
if isinstance(value, datetime.datetime):
if settings.USE_TZ and timezone.is_aware(value):
# Convert aware datetimes to the default time zone
# before casting them to dates (#17742).
default_timezone = timezone.get_default_timezone()
value = timezone.make_naive(value, default_timezone)
return value.date()
if isinstance(value, datetime.date):
return value
try:
parsed = parse_date(value)
if parsed is not None:
return parsed
except ValueError:
msg = self.error_messages['invalid_date'] % value
raise exceptions.ValidationError(msg)
msg = self.error_messages['invalid'] % value
raise exceptions.ValidationError(msg)
def to_python(self, value):
if value is None:
return value
if isinstance(value, datetime.datetime):
return value
if isinstance(value, datetime.date):
value = datetime.datetime(value.year, value.month, value.day)
if settings.USE_TZ:
# For backwards compatibility, interpret naive datetimes in
# local time. This won't work during DST change, but we can't
# do much about it, so we let the exceptions percolate up the
# call stack.
warnings.warn("DateTimeField received a naive datetime (%s)"
" while time zone support is active." % value,
RuntimeWarning)
default_timezone = timezone.get_default_timezone()
value = timezone.make_aware(value, default_timezone)
return value
try:
parsed = parse_datetime(value)
if parsed is not None:
return parsed
except ValueError:
msg = self.error_messages['invalid_datetime'] % value
raise exceptions.ValidationError(msg)
try:
parsed = parse_date(value)
if parsed is not None:
return datetime.datetime(parsed.year, parsed.month, parsed.day)
except ValueError:
msg = self.error_messages['invalid_date'] % value
raise exceptions.ValidationError(msg)
msg = self.error_messages['invalid'] % value
raise exceptions.ValidationError(msg)
