2812f9f664
The mock third party library was needed for mock support in py2 runtimes. Since we now only support py36 and later, we can use the standard lib unittest.mock module instead. Change-Id: I491ca9f482a00b7ca3fa44aa8c26ef73559c178f
83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Note that the unit_tests/__init__.py also mocks out two charmhelpers imports
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# that have side effects that try to apt install modules:
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# sys.modules['charmhelpers.contrib.openstack.utils'] = mock.MagicMock()
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# sys.modules['charmhelpers.contrib.network.ip'] = mock.MagicMock()
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import contextlib
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import io
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from unittest import mock
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import unittest
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@contextlib.contextmanager
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def patch_open():
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'''Patch open() to allow mocking both open() itself and the file that is
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yielded.
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Yields the mock for "open" and "file", respectively.'''
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mock_open = mock.MagicMock(spec=open)
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mock_file = mock.MagicMock(spec=io.FileIO)
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@contextlib.contextmanager
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def stub_open(*args, **kwargs):
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mock_open(*args, **kwargs)
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yield mock_file
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with mock.patch('builtins.open', stub_open):
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yield mock_open, mock_file
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class BaseTestCase(unittest.TestCase):
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def setUp(self):
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self._patches = {}
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self._patches_start = {}
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def tearDown(self):
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for k, v in self._patches.items():
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v.stop()
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setattr(self, k, None)
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self._patches = None
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self._patches_start = None
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def patch_object(self, obj, attr, return_value=None, name=None, new=None,
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**kwargs):
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if name is None:
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name = attr
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if new is not None:
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mocked = mock.patch.object(obj, attr, new=new, **kwargs)
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else:
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mocked = mock.patch.object(obj, attr, **kwargs)
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self._patches[name] = mocked
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started = mocked.start()
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if new is None:
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started.return_value = return_value
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self._patches_start[name] = started
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setattr(self, name, started)
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def patch(self, item, return_value=None, name=None, new=None, **kwargs):
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if name is None:
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raise RuntimeError("Must pass 'name' to .patch()")
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if new is not None:
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mocked = mock.patch(item, new=new, **kwargs)
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else:
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mocked = mock.patch(item, **kwargs)
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self._patches[name] = mocked
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started = mocked.start()
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if new is None:
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started.return_value = return_value
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self._patches_start[name] = started
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setattr(self, name, started)
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