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#!/usr/bin/python
# Copyright 2018 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 utils.py module."""
import os
import shutil
import tempfile
from google_compute_engine.distro_lib.el_7 import 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 UtilsTest(unittest.TestCase):
def setUp(self):
# Create a temporary directory.
self.test_dir = tempfile.mkdtemp()
self.mock_logger = mock.Mock()
self.mock_setup = mock.create_autospec(utils.Utils)
self.mock_setup.network_path = '/etc/sysconfig/network-scripts'
def tearDown(self):
# Remove the directory after the test.
shutil.rmtree(self.test_dir)
def testModifyInterface(self):
config_file = os.path.join(self.test_dir, 'config.cfg')
config_content = [
'# File comment.\n',
'A="apple"\n',
'B=banana\n',
'B=banana\n',
]
with open(config_file, 'w') as config:
for line in config_content:
config.write(line)
# Write a value for an existing config without overriding it.
utils.Utils._ModifyInterface(
self.mock_setup, config_file, 'A', 'aardvark', replace=False)
self.assertEquals(open(config_file).readlines(), config_content)
# Write a value for a config that is not already set.
utils.Utils._ModifyInterface(
self.mock_setup, config_file, 'C', 'none', replace=False)
config_content.append('C=none\n')
self.assertEquals(open(config_file).readlines(), config_content)
# Write a value for an existing config with replacement.
utils.Utils._ModifyInterface(
self.mock_setup, config_file, 'A', 'aardvark', replace=True)
config_content[1] = 'A=aardvark\n'
self.assertEquals(open(config_file).readlines(), config_content)
# Write a value for an existing config with multiple occurrences.
utils.Utils._ModifyInterface(
self.mock_setup, config_file, 'B', '"banana"', replace=True)
config_content[2] = config_content[3] = 'B="banana"\n'
self.assertEquals(open(config_file).readlines(), config_content)
@mock.patch('google_compute_engine.distro_lib.el_7.utils.os.path.exists')
def testDisableNetworkManager(self, mock_exists):
mock_open = mock.mock_open()
mocks = mock.Mock()
mocks.attach_mock(mock_exists, 'exists')
mocks.attach_mock(mock_open, 'open')
mocks.attach_mock(self.mock_logger, 'logger')
mocks.attach_mock(self.mock_setup._ModifyInterface, 'modify')
mock_exists.side_effect = [True, False]
with mock.patch('%s.open' % builtin, mock_open, create=False):
utils.Utils._DisableNetworkManager(
self.mock_setup, ['eth0', 'eth1'], self.mock_logger)
expected_calls = [
mock.call.exists('/etc/sysconfig/network-scripts/ifcfg-eth0'),
mock.call.modify(mock.ANY, 'DEVICE', 'eth0', replace=False),
mock.call.modify(mock.ANY, 'NM_CONTROLLED', 'no', replace=True),
mock.call.exists('/etc/sysconfig/network-scripts/ifcfg-eth1'),
mock.call.open('/etc/sysconfig/network-scripts/ifcfg-eth1', 'w'),
mock.call.open().__enter__(),
mock.call.open().write(mock.ANY),
mock.call.open().__exit__(None, None, None),
mock.call.logger.info(mock.ANY, 'eth1'),
]
self.assertEqual(mocks.mock_calls, expected_calls)
@mock.patch('google_compute_engine.distro_lib.el_7.utils.os.path.exists')
@mock.patch('google_compute_engine.distro_lib.helpers.CallDhclient')
def testEnableNetworkInterfaces(self, mock_call, mock_exists):
mocks = mock.Mock()
mocks.attach_mock(mock_exists, 'exists')
mocks.attach_mock(self.mock_logger, 'logger')
mocks.attach_mock(self.mock_setup._DisableNetworkManager, 'disable')
mocks.attach_mock(mock_call, 'call_dhclient')
mock_exists.side_effect = [True, False]
# Enable interfaces with network manager enabled.
utils.Utils.EnableNetworkInterfaces(
self.mock_setup, ['A', 'B'], self.mock_logger)
# Enable interfaces with network manager is not present.
utils.Utils.EnableNetworkInterfaces(
self.mock_setup, ['C', 'D'], self.mock_logger)
expected_calls = [
mock.call.exists('/etc/sysconfig/network-scripts'),
mock.call.disable(['A', 'B'], mock.ANY),
mock.call.call_dhclient(['A', 'B'], mock.ANY),
mock.call.exists('/etc/sysconfig/network-scripts'),
mock.call.call_dhclient(['C', 'D'], mock.ANY),
]
self.assertEqual(mocks.mock_calls, expected_calls)
@mock.patch('google_compute_engine.distro_lib.helpers.CallHwclock')
def testHandleClockSync(self, mock_call):
mocks = mock.Mock()
mocks.attach_mock(mock_call, 'call')
utils.Utils.HandleClockSync(self.mock_setup, self.mock_logger)
expected_calls = [mock.call.call(mock.ANY)]
self.assertEqual(mocks.mock_calls, expected_calls)
@mock.patch('google_compute_engine.distro_lib.ip_forwarding_utils.IpForwardingUtilsIproute')
def testIpForwardingUtils(self, mock_call):
mocks = mock.Mock()
mocks.attach_mock(mock_call, 'call')
utils.Utils.IpForwardingUtils(self.mock_setup, self.mock_logger, '66')
expected_calls = [mock.call.call(mock.ANY, '66')]
self.assertEqual(mocks.mock_calls, expected_calls)
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