def test__format_display(self):
# (npa, nxx, xxxx, ext, expect, label)
tests = [
('519', '291', '5554', '123', '(519) 291-5554 x123', 'all parts'),
('', '291', '5554', '123', '291-5554 x123', 'no npa'),
('519', '291', '5554', '', '(519) 291-5554', 'no ext'),
('', '291', '5554', '', '291-5554', '7 digits'),
('', '', '', '', '', 'no parts'),
]
for t in tests:
phone = PhoneNumber('')
phone.npa = t[0]
phone.nxx = t[1]
phone.xxxx = t[2]
phone.ext = t[3]
self.assertEqual(phone.format_display(), t[4])
# Handle non-typical phone number
value = 'Not Available'
phone = PhoneNumber(value)
self.assertEqual(phone.format_display(), value)
