114 lines
4.4 KiB
Python
114 lines
4.4 KiB
Python
# Copyright 2015 Intel Corporation.
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# Copyright 2015 Isaku Yamahata <isaku.yamahata at intel com>
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# <isaku.yamahata at gmail com>
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# All Rights Reserved.
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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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from neutron.agent.linux import bridge_lib
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from neutron.tests import base
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class BridgeLibTest(base.BaseTestCase):
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"""A test suite to exercise the bridge libraries """
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_NAMESPACE = 'test-namespace'
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_BR_NAME = 'test-br'
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_IF_NAME = 'test-if'
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def setUp(self):
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super(BridgeLibTest, self).setUp()
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mock.patch(
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'neutron.common.ipv6_utils.is_enabled_and_bind_by_default',
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return_value=True).start()
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ip_wrapper = mock.patch('neutron.agent.linux.ip_lib.IPWrapper').start()
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self.execute = ip_wrapper.return_value.netns.execute
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def _verify_bridge_mock(self, cmd):
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self.execute.assert_called_once_with(cmd, run_as_root=True)
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self.execute.reset_mock()
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def _verify_bridge_sysctl_mock(self, cmd):
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self.execute.assert_called_once_with(cmd, run_as_root=True,
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log_fail_as_error=True)
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self.execute.reset_mock()
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def test_is_bridged_interface(self):
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exists = lambda path: path == "/sys/class/net/tapOK/brport"
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with mock.patch('os.path.exists', side_effect=exists):
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self.assertTrue(bridge_lib.is_bridged_interface("tapOK"))
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self.assertFalse(bridge_lib.is_bridged_interface("tapKO"))
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def test_get_interface_bridge(self):
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with mock.patch('os.readlink', side_effect=["prefix/br0", OSError()]):
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br = bridge_lib.BridgeDevice.get_interface_bridge('tap0')
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self.assertIsInstance(br, bridge_lib.BridgeDevice)
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self.assertEqual("br0", br.name)
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br = bridge_lib.BridgeDevice.get_interface_bridge('tap0')
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self.assertIsNone(br)
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def _test_br(self, namespace=None):
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br = bridge_lib.BridgeDevice.addbr(self._BR_NAME, namespace)
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self.assertEqual(namespace, br.namespace)
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self._verify_bridge_mock(['brctl', 'addbr', self._BR_NAME])
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br.setfd(0)
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self._verify_bridge_mock(['brctl', 'setfd', self._BR_NAME, '0'])
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br.disable_stp()
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self._verify_bridge_mock(['brctl', 'stp', self._BR_NAME, 'off'])
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br.disable_ipv6()
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cmd = 'net.ipv6.conf.%s.disable_ipv6=1' % self._BR_NAME
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self._verify_bridge_sysctl_mock(['sysctl', '-w', cmd])
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br.addif(self._IF_NAME)
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self._verify_bridge_mock(
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['brctl', 'addif', self._BR_NAME, self._IF_NAME])
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br.delif(self._IF_NAME)
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self._verify_bridge_mock(
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['brctl', 'delif', self._BR_NAME, self._IF_NAME])
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br.delbr()
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self._verify_bridge_mock(['brctl', 'delbr', self._BR_NAME])
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def test_addbr_with_namespace(self):
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self._test_br(self._NAMESPACE)
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def test_addbr_without_namespace(self):
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self._test_br()
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def test_addbr_exists(self):
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self.execute.side_effect = RuntimeError()
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with mock.patch.object(bridge_lib.BridgeDevice, 'exists',
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return_value=True):
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bridge_lib.BridgeDevice.addbr(self._BR_NAME)
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bridge_lib.BridgeDevice.addbr(self._BR_NAME)
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def test_owns_interface(self):
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br = bridge_lib.BridgeDevice('br-int')
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exists = lambda path: path == "/sys/class/net/br-int/brif/abc"
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with mock.patch('os.path.exists', side_effect=exists):
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self.assertTrue(br.owns_interface("abc"))
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self.assertFalse(br.owns_interface("def"))
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def test_get_interfaces(self):
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br = bridge_lib.BridgeDevice('br-int')
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interfaces = ["tap1", "tap2"]
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with mock.patch('os.listdir', side_effect=[interfaces, OSError()]):
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self.assertEqual(interfaces, br.get_interfaces())
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self.assertEqual([], br.get_interfaces())
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