OpenStack Networking (Neutron)
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neutron/neutron/tests/unit/agent/linux/test_bridge_lib.py

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3.5 KiB

# Copyright 2015 Intel Corporation.
# Copyright 2015 Isaku Yamahata <isaku.yamahata at intel com>
# <isaku.yamahata at gmail com>
# 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 unittest import mock
from oslo_utils import netutils
from neutron.agent.linux import bridge_lib
from neutron.privileged.agent.linux import ip_lib as priv_lib
from neutron.tests import base
class BridgeLibTest(base.BaseTestCase):
"""A test suite to exercise the bridge libraries """
_NAMESPACE = 'test-namespace'
_BR_NAME = 'test-br'
_IF_NAME = 'test-if'
def setUp(self):
super(BridgeLibTest, self).setUp()
mock.patch.object(netutils, 'is_ipv6_enabled',
return_value=True).start()
ip_wrapper = mock.patch('neutron.agent.linux.ip_lib.IPWrapper').start()
self.execute = ip_wrapper.return_value.netns.execute
self.create_p = mock.patch.object(priv_lib, 'create_interface')
self.create = self.create_p.start()
self.delete_p = mock.patch.object(priv_lib, 'delete_interface')
self.delete = self.delete_p.start()
def _verify_bridge_mock(self, cmd):
self.execute.assert_called_once_with(cmd, run_as_root=True)
self.execute.reset_mock()
def _verify_bridge_sysctl_mock(self, cmd):
self.execute.assert_called_once_with(cmd, run_as_root=True,
log_fail_as_error=True)
self.execute.reset_mock()
def test_is_bridged_interface(self):
exists = lambda path: path == "/sys/class/net/tapOK/brport"
with mock.patch('os.path.exists', side_effect=exists):
self.assertTrue(bridge_lib.is_bridged_interface("tapOK"))
self.assertFalse(bridge_lib.is_bridged_interface("tapKO"))
def test_get_interface_bridge(self):
with mock.patch('os.readlink', side_effect=["prefix/br0", OSError()]):
br = bridge_lib.BridgeDevice.get_interface_bridge('tap0')
self.assertIsInstance(br, bridge_lib.BridgeDevice)
self.assertEqual("br0", br.name)
br = bridge_lib.BridgeDevice.get_interface_bridge('tap0')
self.assertIsNone(br)
def test_addbr_exists(self):
self.create.side_effect = priv_lib.InterfaceAlreadyExists
bridge_lib.BridgeDevice.addbr(self._BR_NAME)
bridge_lib.BridgeDevice.addbr(self._BR_NAME)
def test_owns_interface(self):
br = bridge_lib.BridgeDevice('br-int')
exists = lambda path: path == "/sys/class/net/br-int/brif/abc"
with mock.patch('os.path.exists', side_effect=exists):
self.assertTrue(br.owns_interface("abc"))
self.assertFalse(br.owns_interface("def"))
def test_get_interfaces(self):
br = bridge_lib.BridgeDevice('br-int')
interfaces = ["tap1", "tap2"]
with mock.patch('os.listdir', side_effect=[interfaces, OSError()]):
self.assertEqual(interfaces, br.get_interfaces())
self.assertEqual([], br.get_interfaces())