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| | #! /usr/bin/env avocado-runner-avocado-classless
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Copyright Red Hat
# Author: David Gibson <david@gibson.dropbear.id.au>
"""
Test A Simple Socket Transport
address.py - Address allocation helpers
"""
import ipaddress
from avocado_classless.test import assert_eq, test
# Loopback addresses, for convenience
LOOPBACK4 = ipaddress.ip_address('127.0.0.1')
LOOPBACK6 = ipaddress.ip_address('::1')
# Documentation test networks defined by RFC 5737
TEST_NET_1 = ipaddress.ip_network('192.0.2.0/24')
TEST_NET_2 = ipaddress.ip_network('198.51.100.0/24')
TEST_NET_3 = ipaddress.ip_network('203.0.113.0/24')
# Documentation test network defined by RFC 3849
TEST_NET6 = ipaddress.ip_network('2001:db8::/32')
# Some subnets of that for our usage
TEST_NET6_TASST_A = ipaddress.ip_network('2001:db8:9a55:aaaa::/64')
TEST_NET6_TASST_B = ipaddress.ip_network('2001:db8:9a55:bbbb::/64')
TEST_NET6_TASST_C = ipaddress.ip_network('2001:db8:9a55:cccc::/64')
class IpiAllocator: # pylint: disable=R0903
"""IP address allocator"""
DEFAULT_NETS = [TEST_NET_1, TEST_NET6_TASST_A]
def __init__(self, *nets):
if not nets:
nets = self.DEFAULT_NETS
self.nets = [ipaddress.ip_network(n) for n in nets]
self.hostses = [n.hosts() for n in self.nets]
def next_ipis(self):
addrs = [next(h) for h in self.hostses]
return [ipaddress.ip_interface(f'{a}/{n.prefixlen}')
for a, n in zip(addrs, self.nets)]
@test
def ipa_test(nets=None, count=12):
if nets is None:
ipa = IpiAllocator()
nets = IpiAllocator.DEFAULT_NETS
else:
ipa = IpiAllocator(*nets)
addrsets = [set() for i in range(len(nets))]
for i in range(count):
addrs = ipa.next_ipis()
# Check we got as many addresses as expected
assert_eq(len(addrs), len(nets))
for s, a, n in zip(addrsets, addrs, nets):
# Check the addresses belong to the right network
assert_eq(a.network, ipaddress.ip_network(n))
s.add(a)
print(addrsets)
# Check the addresses are unique
for s in addrsets:
assert_eq(len(s), count)
@test
def ipa_test_custom():
ipa_test(nets=['10.55.0.0/16', '192.168.55.0/24', 'fd00:9a57:a000::/48'])
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