106 lines
4.4 KiB
Python
106 lines
4.4 KiB
Python
# Copyright 2016 Red Hat, Inc
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# Copyright 2017 Rackspace Australia
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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 oslo_concurrency import processutils
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import nova.privsep.linux_net
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from nova import test
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class LinuxNetTestCase(test.NoDBTestCase):
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"""Test networking helpers."""
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@mock.patch('oslo_concurrency.processutils.execute',
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return_value=('', ''))
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def test_set_device_mtu_default(self, mock_exec):
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calls = []
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nova.privsep.linux_net._set_device_mtu_inner('fake-dev', None)
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mock_exec.assert_has_calls(calls)
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@mock.patch('oslo_concurrency.processutils.execute')
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@mock.patch('nova.privsep.linux_net._set_device_enabled_inner')
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def test_create_tap_dev(self, mock_enabled, mock_execute):
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nova.privsep.linux_net._create_tap_dev_inner('tap42')
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mock_execute.assert_has_calls([
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mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
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check_exit_code=[0, 2, 254])
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])
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mock_enabled.assert_called_once_with('tap42')
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@mock.patch('os.path.exists', return_value=True)
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@mock.patch('oslo_concurrency.processutils.execute')
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def test_create_tap_skipped_when_exists(self, mock_execute, mock_exists):
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nova.privsep.linux_net._create_tap_dev_inner('tap42')
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mock_exists.assert_called_once_with('/sys/class/net/tap42')
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mock_execute.assert_not_called()
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@mock.patch('oslo_concurrency.processutils.execute')
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@mock.patch('nova.privsep.linux_net._set_device_enabled_inner')
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@mock.patch('nova.privsep.linux_net._set_device_macaddr_inner')
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def test_create_tap_dev_mac(self, mock_set_macaddr, mock_enabled,
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mock_execute):
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nova.privsep.linux_net._create_tap_dev_inner(
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'tap42', '00:11:22:33:44:55')
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mock_execute.assert_has_calls([
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mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
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check_exit_code=[0, 2, 254])
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])
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mock_enabled.assert_called_once_with('tap42')
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mock_set_macaddr.assert_has_calls([
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mock.call('tap42', '00:11:22:33:44:55')])
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@mock.patch('oslo_concurrency.processutils.execute')
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@mock.patch('nova.privsep.linux_net._set_device_enabled_inner')
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def test_create_tap_dev_fallback_to_tunctl(self, mock_enabled,
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mock_execute):
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# ip failed, fall back to tunctl
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mock_execute.side_effect = [processutils.ProcessExecutionError, 0, 0]
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nova.privsep.linux_net._create_tap_dev_inner('tap42')
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mock_execute.assert_has_calls([
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mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
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check_exit_code=[0, 2, 254]),
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mock.call('tunctl', '-b', '-t', 'tap42')
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])
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mock_enabled.assert_called_once_with('tap42')
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@mock.patch('oslo_concurrency.processutils.execute')
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@mock.patch('nova.privsep.linux_net._set_device_enabled_inner')
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def test_create_tap_dev_multiqueue(self, mock_enabled, mock_execute):
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nova.privsep.linux_net._create_tap_dev_inner(
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'tap42', multiqueue=True)
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mock_execute.assert_has_calls([
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mock.call('ip', 'tuntap', 'add', 'tap42', 'mode', 'tap',
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'multi_queue', check_exit_code=[0, 2, 254])
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])
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mock_enabled.assert_called_once_with('tap42')
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@mock.patch('oslo_concurrency.processutils.execute')
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def test_create_tap_dev_multiqueue_tunctl_raises(self, mock_execute):
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# if creation of a tap by the means of ip command fails,
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# create_tap_dev() will try to do that by the means of tunctl
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mock_execute.side_effect = processutils.ProcessExecutionError
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# but tunctl can't create multiqueue taps, so the failure is expected
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self.assertRaises(processutils.ProcessExecutionError,
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nova.privsep.linux_net._create_tap_dev_inner,
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'tap42', multiqueue=True)
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