49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
# 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 functools
|
|
import io
|
|
|
|
import mock
|
|
import six
|
|
|
|
|
|
class FakeConfigFile(object):
|
|
"""Contextmanager and decorator for mocking config files.
|
|
|
|
:param text_config: contents of configuration to parse by oslo.config
|
|
:type text_config: str
|
|
"""
|
|
def __init__(self, text_config):
|
|
self.text_config = text_config
|
|
|
|
def __enter__(self):
|
|
if six.PY3:
|
|
func = 'builtins.open'
|
|
return_val = io.StringIO(self.text_config)
|
|
else:
|
|
func = '__builtin__.open'
|
|
return_val = io.BytesIO(self.text_config)
|
|
|
|
self.patcher = mock.patch(func, return_value=return_val)
|
|
self.patcher.start()
|
|
|
|
def __exit__(self, *args, **kwargs):
|
|
self.patcher.stop()
|
|
|
|
def __call__(self, f):
|
|
@functools.wraps(f)
|
|
def wrapper(*args, **kwargs):
|
|
with self:
|
|
return f(*args, **kwargs)
|
|
return wrapper
|