def test_parse_brackets(self):
expected = IPRange('1.2.3.118', '1.2.3.121')
_input = '1.2.3.1[18-21]'
self.assertEqual(expected, cidrize.parse_brackets(_input))
def test_parse_brackets_fail(self):
expected = None
_input = '10.10.1[67].0/24'
self.assertEqual(expected, cidrize.parse_brackets(_input))