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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_setup.py module."""
import subprocess
from google_compute_engine.network_setup import network_setup
from google_compute_engine.test_compat import mock
from google_compute_engine.test_compat import unittest
class NetworkSetupTest(unittest.TestCase):
def setUp(self):
self.mock_logger = mock.Mock()
self.mock_watcher = mock.Mock()
self.mock_ip_forwarding_utils = mock.Mock()
self.mock_network_utils = mock.Mock()
self.metadata_key = 'metadata_key'
self.dhcp_binary = 'binary'
self.mock_setup = mock.create_autospec(network_setup.NetworkSetup)
self.mock_setup.logger = self.mock_logger
self.mock_setup.watcher = self.mock_watcher
self.mock_setup.network_utils = self.mock_network_utils
self.mock_setup.network_interfaces = self.metadata_key
self.mock_setup.dhcp_binary = self.dhcp_binary
@mock.patch('google_compute_engine.network_setup.network_setup.network_utils')
@mock.patch('google_compute_engine.network_setup.network_setup.metadata_watcher')
@mock.patch('google_compute_engine.network_setup.network_setup.logger')
def testNetworkSetup(self, mock_logger, mock_watcher, mock_network_utils):
mock_logger_instance = mock.Mock()
mock_logger.Logger.return_value = mock_logger_instance
mocks = mock.Mock()
mocks.attach_mock(mock_logger, 'logger')
mocks.attach_mock(mock_watcher, 'watcher')
mocks.attach_mock(mock_network_utils, 'network')
with mock.patch.object(
network_setup.NetworkSetup, '_SetupNetworkInterfaces'):
network_setup.NetworkSetup(dhcp_binary='binary', debug=True)
expected_calls = [
mock.call.logger.Logger(name=mock.ANY, debug=True, facility=mock.ANY),
mock.call.watcher.MetadataWatcher(logger=mock_logger_instance),
mock.call.network.NetworkUtils(logger=mock_logger_instance),
]
self.assertEqual(mocks.mock_calls, expected_calls)
@mock.patch('google_compute_engine.network_setup.network_setup.subprocess.check_call')
def testEnableNetworkInterface(self, mock_call):
mocks = mock.Mock()
mocks.attach_mock(mock_call, 'call')
mocks.attach_mock(self.mock_logger, 'logger')
mocks.attach_mock(self.mock_watcher, 'watcher')
mocks.attach_mock(self.mock_network_utils, 'network')
mock_call.side_effect = [None, subprocess.CalledProcessError(1, 'Test')]
self.mock_network_utils.IsEnabled.side_effect = [True, False, False]
network_setup.NetworkSetup._EnableNetworkInterface(self.mock_setup, 'a')
network_setup.NetworkSetup._EnableNetworkInterface(self.mock_setup, 'b')
network_setup.NetworkSetup._EnableNetworkInterface(self.mock_setup, 'c')
expected_calls = [
# The network interface is already enabled.
mock.call.network.IsEnabled('a'),
# Successfully enable the network interface.
mock.call.network.IsEnabled('b'),
mock.call.logger.info(mock.ANY, 'b'),
mock.call.call([self.dhcp_binary, 'b']),
# Exception while enabling the network interface.
mock.call.network.IsEnabled('c'),
mock.call.logger.info(mock.ANY, 'c'),
mock.call.call([self.dhcp_binary, 'c']),
mock.call.logger.warning(mock.ANY, 'c'),
]
self.assertEqual(mocks.mock_calls, expected_calls)
def testSetupNetworkInterfaces(self):
mocks = mock.Mock()
mocks.attach_mock(self.mock_logger, 'logger')
mocks.attach_mock(self.mock_watcher, 'watcher')
mocks.attach_mock(self.mock_network_utils, 'network')
mocks.attach_mock(self.mock_setup, 'setup')
self.mock_watcher.GetMetadata.return_value = [
{'mac': '1'}, {'mac': '2'}, {}]
self.mock_network_utils.GetNetworkInterface.side_effect = [
'eth0', None, None]
with mock.patch.object(
network_setup.NetworkSetup, '_EnableNetworkInterface'):
network_setup.NetworkSetup._SetupNetworkInterfaces(self.mock_setup)
expected_calls = [
mock.call.watcher.GetMetadata(
metadata_key=self.metadata_key, recursive=True),
mock.call.network.GetNetworkInterface('1'),
mock.call.setup._EnableNetworkInterface('eth0'),
mock.call.network.GetNetworkInterface('2'),
mock.call.logger.warning(mock.ANY, '2'),
mock.call.network.GetNetworkInterface(None),
mock.call.logger.warning(mock.ANY, None),
]
self.assertEqual(mocks.mock_calls, expected_calls)
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