/usr/share/pyshared/tests/unit/test_config.py is in python-openstack-common 0.1+git20111130-0ubuntu2.
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# Copyright 2011 OpenStack LLC.
# 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.
import optparse
import unittest
from openstack.common import config
class TestConfig(unittest.TestCase):
def test_common_options(self):
parser = optparse.OptionParser()
self.assertEquals(0, len(parser.option_groups))
config.add_common_options(parser)
self.assertEquals(1, len(parser.option_groups))
expected_options = ['--verbose', '--debug', '--config-file']
for e in expected_options:
self.assertTrue(parser.option_groups[0].get_option(e),
"Missing required common option: %s" % e)
def test_parse_options(self):
# test empty args and that parse_options() returns a mapping
# of typed values
parser = optparse.OptionParser()
config.add_common_options(parser)
parsed_options, args = config.parse_options(parser, [])
expected_options = {'verbose': False, 'debug': False,
'config_file': None}
self.assertEquals(expected_options, parsed_options)
# test non-empty args and that parse_options() returns a mapping
# of typed values matching supplied args
parser = optparse.OptionParser()
config.add_common_options(parser)
parsed_options, args = config.parse_options(parser, ['--verbose'])
expected_options = {'verbose': True, 'debug': False,
'config_file': None}
self.assertEquals(expected_options, parsed_options)
# test non-empty args that contain unknown options raises
# a SystemExit exception. Not ideal, but unfortunately optparse
# raises a sys.exit() when it runs into an error instead of raising
# something a bit more useful for libraries. optparse must have been
# written by the same group that wrote unittest ;)
parser = optparse.OptionParser()
config.add_common_options(parser)
self.assertRaises(SystemExit, config.parse_options,
parser, ['--unknown'])
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