neutron/neutron/tests/unit/test_l3_dvr.py
Carl Baldwin d7c5306360 Move classes out of l3_agent.py
The file l3_agent.py has become too large.  This patch is a simple
pure refactor to move some of the functionality in to other files
where things aren't too tangled up.  There is no functional change
with this patch and I avoided gratuitous other fixups in this patch in
order to make it easier to review.

I plan to follow up on the new l3_dvr and l3_agent_router modules with
more restructuring in the near future.

Partially-Implements: bp restructure-l3-agent

Change-Id: I3529fe4146c50c940f41eb26d0b5efc5870b3af9
2014-12-10 15:19:28 -07:00

97 lines
3.8 KiB
Python

# Copyright 2014 Hewlett-Packard Development Company, L.P.
#
# 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.
import mock
import netaddr
from neutron.agent.l3 import link_local_allocator as lla
from neutron.tests import base
class TestLinkLocalAddrAllocator(base.BaseTestCase):
def setUp(self):
super(TestLinkLocalAddrAllocator, self).setUp()
self.subnet = netaddr.IPNetwork('169.254.31.0/24')
def test__init__(self):
a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
self.assertEqual('/file', a.state_file)
self.assertEqual({}, a.allocations)
def test__init__readfile(self):
with mock.patch.object(lla.LinkLocalAllocator, '_read') as read:
read.return_value = ["da873ca2,169.254.31.28/31\n"]
a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
self.assertTrue('da873ca2' in a.remembered)
self.assertEqual({}, a.allocations)
def test_allocate(self):
a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
subnet = a.allocate('deadbeef')
self.assertTrue('deadbeef' in a.allocations)
self.assertTrue(subnet not in a.pool)
self._check_allocations(a.allocations)
write.assert_called_once_with(['deadbeef,%s\n' % subnet.cidr])
def test_allocate_from_file(self):
with mock.patch.object(lla.LinkLocalAllocator, '_read') as read:
read.return_value = ["deadbeef,169.254.31.88/31\n"]
a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
subnet = a.allocate('deadbeef')
self.assertEqual(netaddr.IPNetwork('169.254.31.88/31'), subnet)
self.assertTrue(subnet not in a.pool)
self._check_allocations(a.allocations)
self.assertFalse(write.called)
def test_allocate_exhausted_pool(self):
subnet = netaddr.IPNetwork('169.254.31.0/31')
with mock.patch.object(lla.LinkLocalAllocator, '_read') as read:
read.return_value = ["deadbeef,169.254.31.0/31\n"]
a = lla.LinkLocalAllocator('/file', subnet.cidr)
with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
allocation = a.allocate('abcdef12')
self.assertEqual(subnet, allocation)
self.assertFalse('deadbeef' in a.allocations)
self.assertTrue('abcdef12' in a.allocations)
self.assertTrue(allocation not in a.pool)
self._check_allocations(a.allocations)
write.assert_called_once_with(['abcdef12,%s\n' % allocation.cidr])
self.assertRaises(RuntimeError, a.allocate, 'deadbeef')
def test_release(self):
with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
subnet = a.allocate('deadbeef')
write.reset_mock()
a.release('deadbeef')
self.assertTrue('deadbeef' not in a.allocations)
self.assertTrue(subnet in a.pool)
self.assertEqual({}, a.allocations)
write.assert_called_once_with([])
def _check_allocations(self, allocations):
for key, subnet in allocations.items():
self.assertTrue(subnet in self.subnet)
self.assertEqual(subnet.prefixlen, 31)