def test_maxwidth_setter(self):
parser = AddressParser()
parser.maxwidth = 24
self.assertEqual(24, parser.maxwidth)
self.assertEqual(0xFFFFFF, parser._maxaddr)
def test_number_constrains_address_at_maxwidth_24(self):
parser = AddressParser()
parser.maxwidth = 24
parser.labels = {'foo': 0xFFFFFF}
self.assertRaises(OverflowError, parser.number, 'foo+5')