/usr/share/pyshared/melange/tests/unit/test_rfc2462_ipv6_generator.py is in python-melange 2012.1~e4~20120126.11502-0ubuntu1.
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# Copyright 2011 OpenStack LLC.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from netaddr import IPAddress
from netaddr import IPNetwork
from melange.ipv6 import rfc2462_generator
from melange.tests import BaseTest
class TestRFC2462IpV6Generator(BaseTest):
def test_next_ip_generates_last_4_segments_for_slash_64_block(self):
generator = rfc2462_generator.RFC2462IpV6Generator(cidr="fe::/64",
mac_address="12:ff:12:89:67:34")
ip = generator.next_ip()
self.assertEqual(ip, "fe::10ff:12ff:fe89:6734")
self.assertIn(IPAddress(ip), IPNetwork("fe::/64"))
def test_next_ip_increments_address_in_subsequent_calls(self):
generator = rfc2462_generator.RFC2462IpV6Generator(cidr="fe::/64",
mac_address="12:ff:12:89:67:34")
ip_1 = generator.next_ip()
ip_2 = generator.next_ip()
self.assertEqual(ip_1, "fe::10ff:12ff:fe89:6734")
self.assertEqual(ip_2, "fe::10ff:12ff:fe89:6735")
def test_next_ip_generates_ip_for_block_smaller_than_slash_64(self):
generator = rfc2462_generator.RFC2462IpV6Generator(cidr="fe::/72",
mac_address="12:ff:12:89:67:34")
ip = generator.next_ip()
self.assertEqual(ip, "fe::ff:12ff:fe89:6734")
self.assertIn(IPAddress(ip), IPNetwork("fe::/72"))
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