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OpenStack Study: test_mlnx_plugin_config.py

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# Copyright (c) 2014 OpenStack Foundation

#

# 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

from oslo.config import cfg

#NOTE this import loads tests required options

from neutron.plugins.mlnx.common import config # noqa

from neutron.plugins.mlnx.common import constants

from neutron.plugins.mlnx.mlnx_plugin import MellanoxEswitchPlugin

from neutron.tests import base

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class TestMlnxPluginConfig(base.BaseTestCase):

expected_vlan_mappings = {'physnet1': [(1, 1000)],

'physnet2': [(1, 1000)]}

expected_network_types = {'physnet1': constants.TYPE_ETH,

'physnet2': constants.TYPE_IB}

config_vlan_ranges = ['physnet1:1:1000', 'physnet2:1:1000']

config_network_types = ['physnet1:eth', 'physnet2:ib']

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    def setUp(self):

        super(TestMlnxPluginConfig, self).setUp()

        cfg.CONF.set_override('rpc_backend',

                              'neutron.openstack.common.rpc.impl_fake')

        cfg.CONF.set_override(group='MLNX',

                              name='network_vlan_ranges',

                              override=self.config_vlan_ranges)

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    def _create_mlnx_plugin(self):

        with mock.patch('neutron.plugins.mlnx.db.mlnx_db_v2'):

            return MellanoxEswitchPlugin()

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    def _assert_expected_config(self):

        plugin = self._create_mlnx_plugin()

        self.assertEqual(plugin.network_vlan_ranges,

                         self.expected_vlan_mappings)

        self.assertEqual(plugin.phys_network_type_maps,

                         self.expected_network_types)

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    def test_vlan_ranges_with_network_type(self):

        cfg.CONF.set_override(group='MLNX',

                              name='physical_network_type_mappings',

                              override=self.config_network_types)

        self._assert_expected_config()

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    def test_vlan_ranges_partial_network_type(self):

        cfg.CONF.set_override(group='MLNX',

                              name='physical_network_type_mappings',

                              override=self.config_network_types[:1])

        cfg.CONF.set_override(group='MLNX',

                              name='physical_network_type',

                              override=constants.TYPE_IB)

        self._assert_expected_config()

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    def test_vlan_ranges_no_network_type(self):

        cfg.CONF.set_override(group='MLNX',

                              name='physical_network_type',

                              override=constants.TYPE_IB)

        cfg.CONF.set_override(group='MLNX',

                              name='physical_network_type_mappings',

                              override=[])

        self.expected_network_types.update({'physnet1': constants.TYPE_IB})

        self._assert_expected_config()

        self.expected_network_types.update({'physnet1': constants.TYPE_ETH})

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    def test_parse_physical_network_mappings_invalid_type(self):

        cfg.CONF.set_override(group='MLNX',

                              name='physical_network_type_mappings',

                              override=['physnet:invalid-type'])

        self.assertRaises(SystemExit, self._create_mlnx_plugin)

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    def test_invalid_network_type(self):

        cfg.CONF.set_override(group='MLNX',

                              name='physical_network_type',

                              override='invalid-type')

        self.assertRaises(SystemExit, self._create_mlnx_plugin)