88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# Copyright 2013 Hewlett-Packard Development Company, L.P.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import fixtures
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# TODO(stephenfin): Make this configurable
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try:
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import mock
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except ImportError:
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import unittest.mock as mock
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class _Base(fixtures.Fixture):
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def _setUp(self):
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_p = self._get_p()
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self.addCleanup(_p.stop)
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self.mock = _p.start()
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class MockPatchObject(_Base):
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"""Deal with code around mock."""
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def __init__(self, obj, attr, new=None, **kwargs):
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super(MockPatchObject, self).__init__()
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if new is None:
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new = mock.DEFAULT
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self._get_p = lambda: mock.patch.object(obj, attr, new, **kwargs)
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class MockPatch(_Base):
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"""Deal with code around mock.patch."""
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def __init__(self, obj, new=None, **kwargs):
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super(MockPatch, self).__init__()
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if new is None:
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new = mock.DEFAULT
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self._get_p = lambda: mock.patch(obj, new, **kwargs)
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class _MockPatchMultipleMeta(type):
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"""Arrange for lazy loading of MockPatchMultiple.DEFAULT."""
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# For strict backward compatibility, ensure that DEFAULT also works as
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# an instance property.
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def __new__(cls, name, bases, namespace, **kwargs):
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namespace['DEFAULT'] = cls.DEFAULT
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return super().__new__(cls, name, bases, namespace, **kwargs)
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# Default value to trigger a MagicMock to be created for a named
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# attribute.
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@property
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def DEFAULT(self):
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return mock.DEFAULT
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class MockPatchMultiple(_Base, metaclass=_MockPatchMultipleMeta):
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"""Deal with code around mock.patch.multiple."""
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def __init__(self, obj, **kwargs):
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"""Initialize the mocks
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Pass name=value to replace obj.name with value.
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Pass name=Multiple.DEFAULT to replace obj.name with a
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MagicMock instance.
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:param obj: Object or name containing values being mocked.
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:type obj: str or object
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:param kwargs: names and values of attributes of obj to be mocked.
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"""
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super(MockPatchMultiple, self).__init__()
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self._get_p = lambda: mock.patch.multiple(obj, **kwargs)
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