def test_AB_area_must_have_double_digits(self):
with self.assertRaises(InvalidDoubleDigitDistrictValidationError):
validate_double_digit_district("AB1 1AA")
def test_single_digit_district_postcode_for_double_digit_district_area_is_invalid(self):
with self.assertRaises(InvalidDoubleDigitDistrictValidationError):
self.assertFalse(validate_double_digit_district("AB1 1TB"))
def test_no_restriction_for_non_double_digit_district_area(self):
self.assertIsNone(validate_double_digit_district("BR3 4TU"))
def test_area_with_double_digit_district(self):
self.assertIsNone(validate_double_digit_district("AB10 1TB"))