def METHOD_NAME(self):
    input = "111.22.3.111"
    actual = ipv4_range_type(input)
    expected = input
    self.assertEqual(actual, expected)
    input = "111.22.3.111-222.11.44.111"
    actual = ipv4_range_type(input)
    expected = input
    self.assertEqual(actual, expected)
    input = "111.22"
    with self.assertRaises(ValueError):
        actual = ipv4_range_type(input)
    input = "111.22.33.44-"
    with self.assertRaises(ValueError):
        actual = ipv4_range_type(input)