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#!/usr/bin/python
# Copyright 2016 Google Inc. 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.
"""Unittest for network_utils.py module."""
from google_compute_engine import network_utils
from google_compute_engine.test_compat import builtin
from google_compute_engine.test_compat import mock
from google_compute_engine.test_compat import unittest
class NetworkUtilsTest(unittest.TestCase):
def setUp(self):
self.mock_logger = mock.Mock()
self.interfaces = {'address': 'interface'}
self.mock_utils = network_utils.NetworkUtils(self.mock_logger)
self.mock_utils.interfaces = self.interfaces
@mock.patch('google_compute_engine.network_utils.netifaces', False)
@mock.patch('google_compute_engine.network_utils.os.listdir')
def testCreateInterfaceMapSysfs(self, mock_listdir):
mock_open = mock.mock_open()
interface_map = {
'1': 'a',
'2': 'b',
'3': 'c',
}
mock_listdir.return_value = interface_map.values()
with mock.patch('%s.open' % builtin, mock_open, create=False):
addresses = interface_map.keys()
addresses = ['%s\n' % address for address in addresses]
mock_open().read.side_effect = interface_map.keys()
self.assertEqual(self.mock_utils._CreateInterfaceMap(), interface_map)
@mock.patch('google_compute_engine.network_utils.netifaces', False)
@mock.patch('google_compute_engine.network_utils.os.listdir')
def testCreateInterfaceMapSysfsError(self, mock_listdir):
mock_open = mock.mock_open()
mock_listdir.return_value = ['a', 'b', 'c']
with mock.patch('%s.open' % builtin, mock_open, create=False):
mock_open().read.side_effect = [
'1', OSError('OSError'), IOError('IOError')]
self.assertEqual(self.mock_utils._CreateInterfaceMap(), {'1': 'a'})
expected_calls = [
mock.call.warning(mock.ANY, 'b', 'OSError'),
mock.call.warning(mock.ANY, 'c', 'IOError'),
]
self.assertEqual(self.mock_logger.mock_calls, expected_calls)
@mock.patch('google_compute_engine.network_utils.netifaces.AF_LINK', 88)
@mock.patch('google_compute_engine.network_utils.netifaces')
def testCreateInterfaceMapNetifaces(self, mock_netifaces):
interface_map = {
'11:11:11:11:11:11': 'a',
'22:22:22:22:22:22': 'b',
'33:33:33:33:33:33': 'c',
}
ifaddress_map = {
'a': {mock_netifaces.AF_LINK: [{'addr': '11:11:11:11:11:11'}]},
'b': {mock_netifaces.AF_LINK: [{'addr': '22:22:22:22:22:22'}]},
'c': {mock_netifaces.AF_LINK: [{'addr': '33:33:33:33:33:33'}]},
}
mock_netifaces.interfaces.return_value = interface_map.values()
mock_netifaces.ifaddresses.side_effect = (
lambda interface: ifaddress_map[interface])
self.assertEqual(self.mock_utils._CreateInterfaceMap(), interface_map)
@mock.patch('google_compute_engine.network_utils.netifaces.AF_LINK', 88)
@mock.patch('google_compute_engine.network_utils.netifaces')
def testCreateInterfaceMapNetifacesError(self, mock_netifaces):
ifaddress_map = {
'a': {mock_netifaces.AF_LINK: [{'addr': '11:11:11:11:11:11'}]},
'b': {},
'c': {mock_netifaces.AF_LINK: [{'addr': ''}]},
}
mock_netifaces.interfaces.return_value = ['a', 'b', 'c']
mock_netifaces.ifaddresses.side_effect = (
lambda interface: ifaddress_map[interface])
self.assertEqual(
self.mock_utils._CreateInterfaceMap(), {'11:11:11:11:11:11': 'a'})
expected_calls = [
mock.call.warning(mock.ANY, 'b'),
mock.call.warning(mock.ANY, 'c'),
]
self.assertEqual(self.mock_logger.mock_calls, expected_calls)
def testGetNetworkInterface(self):
self.assertIsNone(self.mock_utils.GetNetworkInterface('invalid'))
self.assertEqual(
self.mock_utils.GetNetworkInterface('address'), 'interface')
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