97 lines
3.8 KiB
Python
97 lines
3.8 KiB
Python
# Copyright 2014 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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import netaddr
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from neutron.agent.l3 import link_local_allocator as lla
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from neutron.tests import base
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class TestLinkLocalAddrAllocator(base.BaseTestCase):
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def setUp(self):
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super(TestLinkLocalAddrAllocator, self).setUp()
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self.subnet = netaddr.IPNetwork('169.254.31.0/24')
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def test__init__(self):
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a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
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self.assertEqual('/file', a.state_file)
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self.assertEqual({}, a.allocations)
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def test__init__readfile(self):
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with mock.patch.object(lla.LinkLocalAllocator, '_read') as read:
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read.return_value = ["da873ca2,169.254.31.28/31\n"]
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a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
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self.assertTrue('da873ca2' in a.remembered)
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self.assertEqual({}, a.allocations)
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def test_allocate(self):
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a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
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with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
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subnet = a.allocate('deadbeef')
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self.assertTrue('deadbeef' in a.allocations)
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self.assertTrue(subnet not in a.pool)
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self._check_allocations(a.allocations)
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write.assert_called_once_with(['deadbeef,%s\n' % subnet.cidr])
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def test_allocate_from_file(self):
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with mock.patch.object(lla.LinkLocalAllocator, '_read') as read:
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read.return_value = ["deadbeef,169.254.31.88/31\n"]
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a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
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with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
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subnet = a.allocate('deadbeef')
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self.assertEqual(netaddr.IPNetwork('169.254.31.88/31'), subnet)
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self.assertTrue(subnet not in a.pool)
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self._check_allocations(a.allocations)
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self.assertFalse(write.called)
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def test_allocate_exhausted_pool(self):
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subnet = netaddr.IPNetwork('169.254.31.0/31')
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with mock.patch.object(lla.LinkLocalAllocator, '_read') as read:
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read.return_value = ["deadbeef,169.254.31.0/31\n"]
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a = lla.LinkLocalAllocator('/file', subnet.cidr)
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with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
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allocation = a.allocate('abcdef12')
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self.assertEqual(subnet, allocation)
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self.assertFalse('deadbeef' in a.allocations)
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self.assertTrue('abcdef12' in a.allocations)
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self.assertTrue(allocation not in a.pool)
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self._check_allocations(a.allocations)
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write.assert_called_once_with(['abcdef12,%s\n' % allocation.cidr])
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self.assertRaises(RuntimeError, a.allocate, 'deadbeef')
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def test_release(self):
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with mock.patch.object(lla.LinkLocalAllocator, '_write') as write:
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a = lla.LinkLocalAllocator('/file', self.subnet.cidr)
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subnet = a.allocate('deadbeef')
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write.reset_mock()
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a.release('deadbeef')
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self.assertTrue('deadbeef' not in a.allocations)
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self.assertTrue(subnet in a.pool)
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self.assertEqual({}, a.allocations)
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write.assert_called_once_with([])
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def _check_allocations(self, allocations):
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for key, subnet in allocations.items():
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self.assertTrue(subnet in self.subnet)
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self.assertEqual(subnet.prefixlen, 31)
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