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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 script_executor.py module."""
import stat
from google_compute_engine.metadata_scripts import script_executor
from google_compute_engine.test_compat import mock
from google_compute_engine.test_compat import unittest
class ScriptExecutorTest(unittest.TestCase):
def setUp(self):
self.script_type = 'test'
self.metadata_script = '/tmp/script'
self.mock_logger = mock.Mock()
self.executor = script_executor.ScriptExecutor(
self.mock_logger, self.script_type)
@mock.patch('google_compute_engine.metadata_scripts.script_executor.os')
def testMakeExecutable(self, mock_os):
st_mode = 1
chmod_mode = st_mode + stat.S_IEXEC
mock_os_stat = mock.Mock()
mock_os_stat.st_mode = st_mode
mock_os.stat.return_value = mock_os_stat
self.executor._MakeExecutable(self.metadata_script)
mock_os.chmod.assert_called_once_with(self.metadata_script, chmod_mode)
@mock.patch('google_compute_engine.metadata_scripts.script_executor.subprocess')
def testRunScript(self, mock_subprocess):
mock_readline = mock.Mock()
mock_readline.side_effect = [bytes(b'a\n'), bytes(b'b\n'), bytes(b'')]
mock_stdout = mock.Mock()
mock_stdout.readline = mock_readline
mock_process = mock.Mock()
mock_process.poll.return_value = 0
mock_process.stdout = mock_stdout
mock_process.returncode = 1
mock_subprocess.Popen.return_value = mock_process
metadata_key = '%s-script' % self.script_type
self.executor._RunScript(metadata_key, self.metadata_script)
expected_calls = [
mock.call('%s: %s', metadata_key, 'a'),
mock.call('%s: %s', metadata_key, 'b'),
mock.call('%s: Return code %s.', metadata_key, 1),
]
self.assertEqual(self.mock_logger.info.mock_calls, expected_calls)
mock_subprocess.Popen.assert_called_once_with(
self.metadata_script, shell=True, executable='/bin/bash',
stderr=mock_subprocess.STDOUT, stdout=mock_subprocess.PIPE)
mock_process.poll.assert_called_once_with()
def testRunScripts(self):
self.executor._MakeExecutable = mock.Mock()
self.executor._RunScript = mock.Mock()
mocks = mock.Mock()
mocks.attach_mock(self.executor._MakeExecutable, 'make_executable')
mocks.attach_mock(self.executor._RunScript, 'run_script')
mocks.attach_mock(self.mock_logger, 'logger')
script_dict = {
'%s-script' % self.script_type: 'a',
'%s-script-key' % self.script_type: 'b',
'%s-script-url' % self.script_type: 'c',
}
self.executor.RunScripts(script_dict)
expected_calls = [
mock.call.make_executable('c'),
mock.call.run_script('%s-script-url' % self.script_type, 'c'),
mock.call.make_executable('a'),
mock.call.run_script('%s-script' % self.script_type, 'a'),
]
self.assertEqual(mocks.mock_calls, expected_calls)
def testRunScriptsEmpty(self):
self.executor._MakeExecutable = mock.Mock()
self.executor._RunScript = mock.Mock()
mocks = mock.Mock()
mocks.attach_mock(self.executor._MakeExecutable, 'make_executable')
mocks.attach_mock(self.executor._RunScript, 'run_script')
mocks.attach_mock(self.mock_logger, 'logger')
script_dict = {
'%s-invalid' % self.script_type: 'script',
}
self.executor.RunScripts(script_dict)
expected_calls = [
mock.call.logger.info(mock.ANY, self.script_type),
]
self.assertEqual(mocks.mock_calls, expected_calls)
if __name__ == '__main__':
unittest.main()
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