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77 lines
2.4 KiB
77 lines
2.4 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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from unittest.mock import patch, MagicMock
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class _asyncio_patch:
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"""
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A wrapper around python patch supporting asyncio.
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Like the original patch you can use it as context
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manager (with)
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The original patch source code is the main source of
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inspiration:
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https://hg.python.org/cpython/file/3.4/Lib/unittest/mock.py
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"""
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def __init__(self, function, *args, **kwargs):
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self.function = function
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self.args = args
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self.kwargs = kwargs
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def __enter__(self):
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"""Used when enter in the with block"""
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self._patcher = patch(self.function, return_value=self._fake_anwser())
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mock_class = self._patcher.start()
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return mock_class
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def __exit__(self, *exc_info):
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"""Used when leaving the with block"""
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self._patcher.stop()
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def _fake_anwser(self):
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future = asyncio.Future()
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if "return_value" in self.kwargs:
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future.set_result(self.kwargs["return_value"])
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elif "side_effect" in self.kwargs:
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if isinstance(self.kwargs["side_effect"], Exception):
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future.set_exception(self.kwargs["side_effect"])
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else:
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raise NotImplementedError
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else:
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future.set_result(True)
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return future
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def asyncio_patch(function, *args, **kwargs):
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return _asyncio_patch(function, *args, **kwargs)
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class AsyncioMagicMock(MagicMock):
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"""
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Magic mock returning coroutine
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"""
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def __init__(self, return_value=None, **kwargs):
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if return_value:
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future = asyncio.Future()
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future.set_result(return_value)
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kwargs["return_value"] = future
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super().__init__(**kwargs)
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