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GNU LESSER GENERAL PUBLIC LICENSE
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MIT License
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||||||
Version 3, 29 June 2007
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|
||||||
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||||||
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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Copyright (c) [2016] [Bruno Oliveira]
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Everyone is permitted to copy and distribute verbatim copies
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of this license document, but changing it is not allowed.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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This version of the GNU Lesser General Public License incorporates
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The above copyright notice and this permission notice shall be included in all
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the terms and conditions of version 3 of the GNU General Public
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copies or substantial portions of the Software.
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License, supplemented by the additional permissions listed below.
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0. Additional Definitions.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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As used herein, "this License" refers to version 3 of the GNU Lesser
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An "Application" is any work that makes use of an interface provided
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You may convey a covered work under sections 3 and 4 of this License
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If you modify a copy of the Library, and, in your modifications, a
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Application with a modified version of the Linked Version. (If
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you use option 4d0, the Installation Information must accompany
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the Minimal Corresponding Source and Corresponding Application
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Code. If you use option 4d1, you must provide the Installation
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Information in the manner specified by section 6 of the GNU GPL
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for conveying Corresponding Source.)
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5. Combined Libraries.
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Library side by side in a single library together with other library
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facilities that are not Applications and are not covered by this
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License, and convey such a combined library under terms of your
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choice, if you do both of the following:
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a) Accompany the combined library with a copy of the same work based
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on the Library, uncombined with any other library facilities,
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conveyed under the terms of this License.
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b) Give prominent notice with the combined library that part of it
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is a work based on the Library, and explaining where to find the
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6. Revised Versions of the GNU Lesser General Public License.
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applies to it, you have the option of following the terms and
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conditions either of that published version or of any later version
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published by the Free Software Foundation. If the Library as you
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received it does not specify a version number of the GNU Lesser
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General Public License, you may choose any version of the GNU Lesser
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General Public License ever published by the Free Software Foundation.
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apply, that proxy's public statement of acceptance of any version is
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permanent authorization for you to choose that version for the
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Library.
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|
346
PKG-INFO
346
PKG-INFO
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@ -1,55 +1,56 @@
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||||||
Metadata-Version: 1.1
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Metadata-Version: 1.1
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||||||
Name: pytest-mock
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Name: pytest-mock
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Version: 0.8.1
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Version: 1.1
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||||||
Summary: Thin-wrapper around the mock package for easier use with py.test
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Summary: Thin-wrapper around the mock package for easier use with py.test
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Home-page: https://github.com/pytest-dev/pytest-mock/
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Home-page: https://github.com/pytest-dev/pytest-mock/
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Author: Bruno Oliveira
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Author: Bruno Oliveira
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Author-email: nicoddemus@gmail.com
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Author-email: nicoddemus@gmail.com
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License: LGPL
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License: MIT
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||||||
Description: ===========
|
Description: ===========
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||||||
pytest-mock
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pytest-mock
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||||||
===========
|
===========
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||||||
|
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||||||
This plugin installs a ``mocker`` fixture which is a thin-wrapper around the patching API
|
This plugin installs a ``mocker`` fixture which is a thin-wrapper around the patching API
|
||||||
provided by the excellent `mock <http://pypi.python.org/pypi/mock>`_ package,
|
provided by the `mock package <http://pypi.python.org/pypi/mock>`_,
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but with the benefit of not having to worry about undoing patches at the end
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but with the benefit of not having to worry about undoing patches at the end
|
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of a test:
|
of a test:
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||||||
|
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.. code-block:: python
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.. code-block:: python
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def test_unix_fs(mocker):
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def test_unix_fs(mocker):
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mocker.patch('os.remove')
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mocker.patch('os.remove')
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UnixFS.rm('file')
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UnixFS.rm('file')
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os.remove.assert_called_once_with('file')
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os.remove.assert_called_once_with('file')
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.. Using PNG badges because PyPI doesn't support SVG
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.. Using PNG badges because PyPI doesn't support SVG
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||||||
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|
||||||
|python| |version| |downloads| |ci| |coverage|
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|python| |version| |downloads| |ci| |appveyor| |coverage|
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||||||
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.. |version| image:: http://img.shields.io/pypi/v/pytest-mock.png
|
.. |version| image:: http://img.shields.io/pypi/v/pytest-mock.png
|
||||||
:target: https://pypi.python.org/pypi/pytest-mock
|
:target: https://pypi.python.org/pypi/pytest-mock
|
||||||
|
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||||||
.. |downloads| image:: http://img.shields.io/pypi/dm/pytest-mock.png
|
.. |downloads| image:: http://img.shields.io/pypi/dm/pytest-mock.png
|
||||||
:target: https://pypi.python.org/pypi/pytest-mock
|
:target: https://pypi.python.org/pypi/pytest-mock
|
||||||
|
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||||||
.. |ci| image:: http://img.shields.io/travis/pytest-dev/pytest-mock.png
|
.. |ci| image:: http://img.shields.io/travis/pytest-dev/pytest-mock.png
|
||||||
:target: https://travis-ci.org/pytest-dev/pytest-mock
|
:target: https://travis-ci.org/pytest-dev/pytest-mock
|
||||||
|
|
||||||
|
.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/pid1t7iuwhkm9eh6/branch/master?svg=true
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:target: https://ci.appveyor.com/project/pytestbot/pytest-mock
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|
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.. |coverage| image:: http://img.shields.io/coveralls/pytest-dev/pytest-mock.png
|
.. |coverage| image:: http://img.shields.io/coveralls/pytest-dev/pytest-mock.png
|
||||||
:target: https://coveralls.io/r/pytest-dev/pytest-mock
|
:target: https://coveralls.io/r/pytest-dev/pytest-mock
|
||||||
|
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||||||
.. |python| image:: https://pypip.in/py_versions/pytest-mock/badge.png
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.. |python| image:: https://img.shields.io/pypi/pyversions/pytest-mock.svg
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||||||
:target: https://pypi.python.org/pypi/pytest-mock/
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:target: https://pypi.python.org/pypi/pytest-mock/
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||||||
:alt: Supported Python versions
|
|
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|
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||||||
|
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||||||
Usage
|
Usage
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=====
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=====
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|
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The ``mocker`` fixture has the same API as
|
The ``mocker`` fixture has the same API as
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`mock.patch <http://www.voidspace.org.uk/python/mock/patch.html#patch-decorators>`_,
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`mock.patch <http://www.voidspace.org.uk/python/mock/patch.html#patch-decorators>`_,
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supporting the same arguments:
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supporting the same arguments:
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.. code-block:: python
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.. code-block:: python
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@ -59,16 +60,187 @@ Description: ===========
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mocker.patch('os.remove')
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mocker.patch('os.remove')
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mocker.patch.object(os, 'listdir', autospec=True)
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mocker.patch.object(os, 'listdir', autospec=True)
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mocked_isfile = mocker.patch('os.path.isfile')
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mocked_isfile = mocker.patch('os.path.isfile')
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The supported methods are:
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The supported methods are:
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|
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* ``mocker.patch``: see http://www.voidspace.org.uk/python/mock/patch.html#patch.
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* ``mocker.patch``: see http://www.voidspace.org.uk/python/mock/patch.html#patch.
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* ``mocker.patch.object``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-object.
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* ``mocker.patch.object``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-object.
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* ``mocker.patch.multiple``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-multiple.
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* ``mocker.patch.multiple``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-multiple.
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* ``mocker.patch.dict``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-dict.
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* ``mocker.patch.dict``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-dict.
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* ``mocker.stopall()``: stops all active patches at this point.
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* ``mocker.stopall()``: stops all active patches up to this point.
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* ``mocker.resetall()``: calls ``reset_mock()`` in all mocked objects up to this point.
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|
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Note that, although mocker's API is intentionally the same as ``mock.patch``'s, its uses as context managers and function decorators are **not** supported. The purpose of this plugin is to make the use of context managers and function decorators for mocking unnecessary. Indeed, trying to use the functionality in ``mocker`` in this manner can lead to non-intuitive errors:
|
Some objects from the ``mock`` module are accessible directly from ``mocker`` for convenience:
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* `Mock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.Mock>`_
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* `MagicMock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.MagicMock>`_
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* `PropertyMock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.PropertyMock>`_
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* `ANY <https://docs.python.org/3/library/unittest.mock.html#any>`_
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* `call <https://docs.python.org/3/library/unittest.mock.html#call>`_ *(Version 1.1)*
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Spy
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---
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The spy acts exactly like the original method in all cases, except it allows use of `mock`
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features with it, like retrieving call count. It also works for class and static methods.
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.. code-block:: python
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def test_spy(mocker):
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class Foo(object):
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def bar(self):
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return 42
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foo = Foo()
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mocker.spy(foo, 'bar')
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assert foo.bar() == 42
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assert foo.bar.call_count == 1
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Stub
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----
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||||||
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The stub is a mock object that accepts any arguments and is useful to test callbacks, for instance.
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May be passed a name to be used by the constructed stub object in its repr (useful for debugging).
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.. code-block:: python
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def test_stub(mocker):
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def foo(on_something):
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on_something('foo', 'bar')
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stub = mocker.stub(name='on_something_stub')
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foo(stub)
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stub.assert_called_once_with('foo', 'bar')
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Improved reporting of mock call assertion errors
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------------------------------------------------
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||||||
|
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||||||
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|
||||||
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This plugin monkeypatches the mock library to improve pytest output for failures
|
||||||
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of mock call assertions like ``Mock.assert_called_with()`` by hiding internal traceback
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entries from the ``mock`` module.
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It also adds introspection information on differing call arguments when
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calling the helper methods. This features catches `AssertionError` raised in
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the method, and uses py.test's own `advanced assertions`_ to return a better
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|
diff::
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m = mocker.patch.object(DS, 'create_char')
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DS().create_char('Raistlin', class_='mag', gift=12)
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> m.assert_called_once_with('Raistlin', class_='mage', gift=12)
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E assert {'class_': 'mag', 'gift': 12} == {'class_': 'mage', 'gift': 12}
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E Omitting 1 identical items, use -v to show
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E Differing items:
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E {'class_': 'mag'} != {'class_': 'mage'}
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E Use -v to get the full diff
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This is useful when asserting mock calls with many/nested arguments and trying
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||||||
|
to quickly see the difference.
|
||||||
|
|
||||||
|
This feature is probably safe, but if you encounter any problems it can be disabled in
|
||||||
|
your ``pytest.ini`` file:
|
||||||
|
|
||||||
|
.. code-block:: ini
|
||||||
|
|
||||||
|
[pytest]
|
||||||
|
mock_traceback_monkeypatch = false
|
||||||
|
|
||||||
|
Note that this feature is automatically disabled with the ``--tb=native`` option. The underlying
|
||||||
|
mechanism used to suppress traceback entries from ``mock`` module does not work with that option
|
||||||
|
anyway plus it generates confusing messages on Python 3.5 due to exception chaining
|
||||||
|
|
||||||
|
.. _advanced assertions: https://pytest.org/latest/assert.html
|
||||||
|
|
||||||
|
|
||||||
|
Requirements
|
||||||
|
============
|
||||||
|
|
||||||
|
* Python 2.6+, Python 3.3+
|
||||||
|
* pytest
|
||||||
|
* mock (for Python 2)
|
||||||
|
|
||||||
|
|
||||||
|
Install
|
||||||
|
=======
|
||||||
|
|
||||||
|
Install using `pip <http://pip-installer.org/>`_:
|
||||||
|
|
||||||
|
.. code-block:: console
|
||||||
|
|
||||||
|
$ pip install pytest-mock
|
||||||
|
|
||||||
|
Changelog
|
||||||
|
=========
|
||||||
|
|
||||||
|
Please consult the `changelog page`_.
|
||||||
|
|
||||||
|
.. _changelog page: https://github.com/pytest-dev/pytest-mock/blob/master/CHANGELOG.rst
|
||||||
|
|
||||||
|
Why bother with a plugin?
|
||||||
|
=========================
|
||||||
|
|
||||||
|
There are a number of different ``patch`` usages in the standard ``mock`` API,
|
||||||
|
but IMHO they don't scale very well when you have more than one or two
|
||||||
|
patches to apply.
|
||||||
|
|
||||||
|
It may lead to an excessive nesting of ``with`` statements, breaking the flow
|
||||||
|
of the test:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
import mock
|
||||||
|
|
||||||
|
def test_unix_fs():
|
||||||
|
with mock.patch('os.remove'):
|
||||||
|
UnixFS.rm('file')
|
||||||
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
with mock.patch('os.listdir'):
|
||||||
|
assert UnixFS.ls('dir') == expected
|
||||||
|
# ...
|
||||||
|
|
||||||
|
with mock.patch('shutil.copy'):
|
||||||
|
UnixFS.cp('src', 'dst')
|
||||||
|
# ...
|
||||||
|
|
||||||
|
|
||||||
|
One can use ``patch`` as a decorator to improve the flow of the test:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
@mock.patch('os.remove')
|
||||||
|
@mock.patch('os.listdir')
|
||||||
|
@mock.patch('shutil.copy')
|
||||||
|
def test_unix_fs(mocked_copy, mocked_listdir, mocked_remove):
|
||||||
|
UnixFS.rm('file')
|
||||||
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
assert UnixFS.ls('dir') == expected
|
||||||
|
# ...
|
||||||
|
|
||||||
|
UnixFS.cp('src', 'dst')
|
||||||
|
# ...
|
||||||
|
|
||||||
|
But this poses a few disadvantages:
|
||||||
|
|
||||||
|
- test functions must receive the mock objects as parameter, even if you don't plan to
|
||||||
|
access them directly; also, order depends on the order of the decorated ``patch``
|
||||||
|
functions;
|
||||||
|
- receiving the mocks as parameters doesn't mix nicely with pytest's approach of
|
||||||
|
naming fixtures as parameters, or ``pytest.mark.parametrize``;
|
||||||
|
- you can't easily undo the mocking during the test execution;
|
||||||
|
|
||||||
|
|
||||||
|
**Note**
|
||||||
|
|
||||||
|
Although mocker's API is intentionally the same as ``mock.patch``'s, its uses as context managers and function decorators are **not** supported. The purpose of this plugin is to make the use of context managers and function decorators for mocking unnecessary. Indeed, trying to use the functionality in ``mocker`` in this manner can lead to non-intuitive errors:
|
||||||
|
|
||||||
.. code-block:: python
|
.. code-block:: python
|
||||||
|
|
||||||
|
@ -86,154 +258,24 @@ Description: ===========
|
||||||
E AttributeError: __exit__
|
E AttributeError: __exit__
|
||||||
|
|
||||||
|
|
||||||
You can also access ``Mock`` and ``MagicMock`` directly using from ``mocker``
|
License
|
||||||
fixture:
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
def test_feature(mocker):
|
|
||||||
ret = [mocker.Mock(return_value=True), mocker.Mock(return_value=True)]
|
|
||||||
mocker.patch('mylib.func', side_effect=ret)
|
|
||||||
|
|
||||||
*New in version 0.5*
|
|
||||||
|
|
||||||
Spy
|
|
||||||
---
|
|
||||||
|
|
||||||
*New in version 0.6*
|
|
||||||
|
|
||||||
The spy acts exactly like the original method in all cases, except it allows use of `mock`
|
|
||||||
features with it, like retrieving call count.
|
|
||||||
|
|
||||||
From version 0.7 onward it also works for class and static methods. Originally it was only safe to
|
|
||||||
use with instance methods.
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
def test_spy(mocker):
|
|
||||||
class Foo(object):
|
|
||||||
def bar(self):
|
|
||||||
return 42
|
|
||||||
|
|
||||||
foo = Foo()
|
|
||||||
mocker.spy(foo, 'bar')
|
|
||||||
assert foo.bar() == 42
|
|
||||||
assert foo.bar.call_count == 1
|
|
||||||
|
|
||||||
Stub
|
|
||||||
----
|
|
||||||
|
|
||||||
*New in version 0.6*
|
|
||||||
|
|
||||||
The stub is a mock object that accepts any arguments and is useful to test callbacks, for instance.
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
def test_stub(mocker):
|
|
||||||
def foo(on_something):
|
|
||||||
on_something('foo', 'bar')
|
|
||||||
|
|
||||||
stub = mocker.stub()
|
|
||||||
|
|
||||||
foo(stub)
|
|
||||||
stub.assert_called_once_with('foo', 'bar')
|
|
||||||
|
|
||||||
Note
|
|
||||||
----
|
|
||||||
|
|
||||||
Prior to version ``0.4.0``, the ``mocker`` fixture was named ``mock``.
|
|
||||||
This was changed because naming the fixture ``mock`` conflicts with the
|
|
||||||
actual ``mock`` module, which made using it awkward when access to both the
|
|
||||||
module and the plugin were required within a test.
|
|
||||||
|
|
||||||
The old fixture ``mock`` still works, but its use is discouraged and will be
|
|
||||||
removed in version ``1.0``.
|
|
||||||
|
|
||||||
Requirements
|
|
||||||
============
|
|
||||||
|
|
||||||
* Python 2.6+, Python 3.2+
|
|
||||||
* pytest
|
|
||||||
* mock (for Python < 3.3)
|
|
||||||
|
|
||||||
|
|
||||||
Install
|
|
||||||
=======
|
=======
|
||||||
|
|
||||||
Install using `pip <http://pip-installer.org/>`_:
|
Distributed under the terms of the `MIT`_ license.
|
||||||
|
|
||||||
.. code-block:: console
|
.. _MIT: https://github.com/pytest-dev/pytest-mock/blob/master/LICENSE
|
||||||
|
|
||||||
$ pip install pytest-mock
|
|
||||||
|
|
||||||
Changelog
|
|
||||||
=========
|
|
||||||
|
|
||||||
Please consult `releases <https://github.com/pytest-dev/pytest-mock/releases>`_.
|
|
||||||
|
|
||||||
Why bother with a plugin?
|
|
||||||
=========================
|
|
||||||
|
|
||||||
There are a number of different ``patch`` usages in the standard ``mock`` API,
|
|
||||||
but IMHO they don't scale very well when you have more than one or two
|
|
||||||
patches to apply.
|
|
||||||
|
|
||||||
It may lead to an excessive nesting of ``with`` statements, breaking the flow
|
|
||||||
of the test:
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
import mock
|
|
||||||
|
|
||||||
def test_unix_fs():
|
|
||||||
with mock.patch('os.remove'):
|
|
||||||
UnixFS.rm('file')
|
|
||||||
os.remove.assert_called_once_with('file')
|
|
||||||
|
|
||||||
with mock.patch('os.listdir'):
|
|
||||||
assert UnixFS.ls('dir') == expected
|
|
||||||
# ...
|
|
||||||
|
|
||||||
with mock.patch('shutil.copy'):
|
|
||||||
UnixFS.cp('src', 'dst')
|
|
||||||
# ...
|
|
||||||
|
|
||||||
|
|
||||||
One can use ``patch`` as a decorator to improve the flow of the test:
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
@mock.patch('os.remove')
|
|
||||||
@mock.patch('os.listdir')
|
|
||||||
@mock.patch('shutil.copy')
|
|
||||||
def test_unix_fs(mocked_copy, mocked_listdir, mocked_remove):
|
|
||||||
UnixFS.rm('file')
|
|
||||||
os.remove.assert_called_once_with('file')
|
|
||||||
|
|
||||||
assert UnixFS.ls('dir') == expected
|
|
||||||
# ...
|
|
||||||
|
|
||||||
UnixFS.cp('src', 'dst')
|
|
||||||
# ...
|
|
||||||
|
|
||||||
But this poses a few disadvantages:
|
|
||||||
|
|
||||||
- test functions must receive the mock objects as parameter, even if you don't plan to
|
|
||||||
access them directly; also, order depends on the order of the decorated ``patch``
|
|
||||||
functions;
|
|
||||||
- receiving the mocks as parameters doesn't mix nicely with pytest's approach of
|
|
||||||
naming fixtures as parameters, or ``pytest.mark.parametrize``;
|
|
||||||
- you can't easily undo the mocking during the test execution;
|
|
||||||
|
|
||||||
Keywords: pytest mock
|
Keywords: pytest mock
|
||||||
Platform: any
|
Platform: any
|
||||||
Classifier: Development Status :: 3 - Alpha
|
Classifier: Development Status :: 5 - Production/Stable
|
||||||
|
Classifier: Framework :: Pytest
|
||||||
Classifier: Intended Audience :: Developers
|
Classifier: Intended Audience :: Developers
|
||||||
Classifier: License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)
|
Classifier: License :: OSI Approved :: MIT License
|
||||||
Classifier: Operating System :: OS Independent
|
Classifier: Operating System :: OS Independent
|
||||||
Classifier: Programming Language :: Python :: 2.6
|
Classifier: Programming Language :: Python :: 2.6
|
||||||
Classifier: Programming Language :: Python :: 2.7
|
Classifier: Programming Language :: Python :: 2.7
|
||||||
Classifier: Programming Language :: Python :: 3
|
Classifier: Programming Language :: Python :: 3
|
||||||
|
Classifier: Programming Language :: Python :: 3.3
|
||||||
Classifier: Programming Language :: Python :: 3.4
|
Classifier: Programming Language :: Python :: 3.4
|
||||||
Classifier: Programming Language :: Python :: 3.5
|
Classifier: Programming Language :: Python :: 3.5
|
||||||
Classifier: Topic :: Software Development :: Testing
|
Classifier: Topic :: Software Development :: Testing
|
||||||
|
|
336
README.rst
336
README.rst
|
@ -3,45 +3,46 @@ pytest-mock
|
||||||
===========
|
===========
|
||||||
|
|
||||||
This plugin installs a ``mocker`` fixture which is a thin-wrapper around the patching API
|
This plugin installs a ``mocker`` fixture which is a thin-wrapper around the patching API
|
||||||
provided by the excellent `mock <http://pypi.python.org/pypi/mock>`_ package,
|
provided by the `mock package <http://pypi.python.org/pypi/mock>`_,
|
||||||
but with the benefit of not having to worry about undoing patches at the end
|
but with the benefit of not having to worry about undoing patches at the end
|
||||||
of a test:
|
of a test:
|
||||||
|
|
||||||
.. code-block:: python
|
.. code-block:: python
|
||||||
|
|
||||||
|
|
||||||
def test_unix_fs(mocker):
|
def test_unix_fs(mocker):
|
||||||
mocker.patch('os.remove')
|
mocker.patch('os.remove')
|
||||||
UnixFS.rm('file')
|
UnixFS.rm('file')
|
||||||
os.remove.assert_called_once_with('file')
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
|
||||||
.. Using PNG badges because PyPI doesn't support SVG
|
.. Using PNG badges because PyPI doesn't support SVG
|
||||||
|
|
||||||
|python| |version| |downloads| |ci| |coverage|
|
|python| |version| |downloads| |ci| |appveyor| |coverage|
|
||||||
|
|
||||||
.. |version| image:: http://img.shields.io/pypi/v/pytest-mock.png
|
.. |version| image:: http://img.shields.io/pypi/v/pytest-mock.png
|
||||||
:target: https://pypi.python.org/pypi/pytest-mock
|
:target: https://pypi.python.org/pypi/pytest-mock
|
||||||
|
|
||||||
.. |downloads| image:: http://img.shields.io/pypi/dm/pytest-mock.png
|
.. |downloads| image:: http://img.shields.io/pypi/dm/pytest-mock.png
|
||||||
:target: https://pypi.python.org/pypi/pytest-mock
|
:target: https://pypi.python.org/pypi/pytest-mock
|
||||||
|
|
||||||
.. |ci| image:: http://img.shields.io/travis/pytest-dev/pytest-mock.png
|
.. |ci| image:: http://img.shields.io/travis/pytest-dev/pytest-mock.png
|
||||||
:target: https://travis-ci.org/pytest-dev/pytest-mock
|
:target: https://travis-ci.org/pytest-dev/pytest-mock
|
||||||
|
|
||||||
|
.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/pid1t7iuwhkm9eh6/branch/master?svg=true
|
||||||
|
:target: https://ci.appveyor.com/project/pytestbot/pytest-mock
|
||||||
|
|
||||||
.. |coverage| image:: http://img.shields.io/coveralls/pytest-dev/pytest-mock.png
|
.. |coverage| image:: http://img.shields.io/coveralls/pytest-dev/pytest-mock.png
|
||||||
:target: https://coveralls.io/r/pytest-dev/pytest-mock
|
:target: https://coveralls.io/r/pytest-dev/pytest-mock
|
||||||
|
|
||||||
.. |python| image:: https://pypip.in/py_versions/pytest-mock/badge.png
|
.. |python| image:: https://img.shields.io/pypi/pyversions/pytest-mock.svg
|
||||||
:target: https://pypi.python.org/pypi/pytest-mock/
|
:target: https://pypi.python.org/pypi/pytest-mock/
|
||||||
:alt: Supported Python versions
|
|
||||||
|
|
||||||
|
|
||||||
Usage
|
Usage
|
||||||
=====
|
=====
|
||||||
|
|
||||||
The ``mocker`` fixture has the same API as
|
The ``mocker`` fixture has the same API as
|
||||||
`mock.patch <http://www.voidspace.org.uk/python/mock/patch.html#patch-decorators>`_,
|
`mock.patch <http://www.voidspace.org.uk/python/mock/patch.html#patch-decorators>`_,
|
||||||
supporting the same arguments:
|
supporting the same arguments:
|
||||||
|
|
||||||
.. code-block:: python
|
.. code-block:: python
|
||||||
|
@ -51,16 +52,187 @@ supporting the same arguments:
|
||||||
mocker.patch('os.remove')
|
mocker.patch('os.remove')
|
||||||
mocker.patch.object(os, 'listdir', autospec=True)
|
mocker.patch.object(os, 'listdir', autospec=True)
|
||||||
mocked_isfile = mocker.patch('os.path.isfile')
|
mocked_isfile = mocker.patch('os.path.isfile')
|
||||||
|
|
||||||
The supported methods are:
|
The supported methods are:
|
||||||
|
|
||||||
* ``mocker.patch``: see http://www.voidspace.org.uk/python/mock/patch.html#patch.
|
* ``mocker.patch``: see http://www.voidspace.org.uk/python/mock/patch.html#patch.
|
||||||
* ``mocker.patch.object``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-object.
|
* ``mocker.patch.object``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-object.
|
||||||
* ``mocker.patch.multiple``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-multiple.
|
* ``mocker.patch.multiple``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-multiple.
|
||||||
* ``mocker.patch.dict``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-dict.
|
* ``mocker.patch.dict``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-dict.
|
||||||
* ``mocker.stopall()``: stops all active patches at this point.
|
* ``mocker.stopall()``: stops all active patches up to this point.
|
||||||
|
* ``mocker.resetall()``: calls ``reset_mock()`` in all mocked objects up to this point.
|
||||||
|
|
||||||
Note that, although mocker's API is intentionally the same as ``mock.patch``'s, its uses as context managers and function decorators are **not** supported. The purpose of this plugin is to make the use of context managers and function decorators for mocking unnecessary. Indeed, trying to use the functionality in ``mocker`` in this manner can lead to non-intuitive errors:
|
Some objects from the ``mock`` module are accessible directly from ``mocker`` for convenience:
|
||||||
|
|
||||||
|
* `Mock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.Mock>`_
|
||||||
|
* `MagicMock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.MagicMock>`_
|
||||||
|
* `PropertyMock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.PropertyMock>`_
|
||||||
|
* `ANY <https://docs.python.org/3/library/unittest.mock.html#any>`_
|
||||||
|
* `call <https://docs.python.org/3/library/unittest.mock.html#call>`_ *(Version 1.1)*
|
||||||
|
|
||||||
|
|
||||||
|
Spy
|
||||||
|
---
|
||||||
|
|
||||||
|
The spy acts exactly like the original method in all cases, except it allows use of `mock`
|
||||||
|
features with it, like retrieving call count. It also works for class and static methods.
|
||||||
|
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
def test_spy(mocker):
|
||||||
|
class Foo(object):
|
||||||
|
def bar(self):
|
||||||
|
return 42
|
||||||
|
|
||||||
|
foo = Foo()
|
||||||
|
mocker.spy(foo, 'bar')
|
||||||
|
assert foo.bar() == 42
|
||||||
|
assert foo.bar.call_count == 1
|
||||||
|
|
||||||
|
Stub
|
||||||
|
----
|
||||||
|
|
||||||
|
|
||||||
|
The stub is a mock object that accepts any arguments and is useful to test callbacks, for instance.
|
||||||
|
May be passed a name to be used by the constructed stub object in its repr (useful for debugging).
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
def test_stub(mocker):
|
||||||
|
def foo(on_something):
|
||||||
|
on_something('foo', 'bar')
|
||||||
|
|
||||||
|
stub = mocker.stub(name='on_something_stub')
|
||||||
|
|
||||||
|
foo(stub)
|
||||||
|
stub.assert_called_once_with('foo', 'bar')
|
||||||
|
|
||||||
|
|
||||||
|
Improved reporting of mock call assertion errors
|
||||||
|
------------------------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
This plugin monkeypatches the mock library to improve pytest output for failures
|
||||||
|
of mock call assertions like ``Mock.assert_called_with()`` by hiding internal traceback
|
||||||
|
entries from the ``mock`` module.
|
||||||
|
|
||||||
|
It also adds introspection information on differing call arguments when
|
||||||
|
calling the helper methods. This features catches `AssertionError` raised in
|
||||||
|
the method, and uses py.test's own `advanced assertions`_ to return a better
|
||||||
|
diff::
|
||||||
|
|
||||||
|
|
||||||
|
m = mocker.patch.object(DS, 'create_char')
|
||||||
|
DS().create_char('Raistlin', class_='mag', gift=12)
|
||||||
|
> m.assert_called_once_with('Raistlin', class_='mage', gift=12)
|
||||||
|
E assert {'class_': 'mag', 'gift': 12} == {'class_': 'mage', 'gift': 12}
|
||||||
|
E Omitting 1 identical items, use -v to show
|
||||||
|
E Differing items:
|
||||||
|
E {'class_': 'mag'} != {'class_': 'mage'}
|
||||||
|
E Use -v to get the full diff
|
||||||
|
|
||||||
|
|
||||||
|
This is useful when asserting mock calls with many/nested arguments and trying
|
||||||
|
to quickly see the difference.
|
||||||
|
|
||||||
|
This feature is probably safe, but if you encounter any problems it can be disabled in
|
||||||
|
your ``pytest.ini`` file:
|
||||||
|
|
||||||
|
.. code-block:: ini
|
||||||
|
|
||||||
|
[pytest]
|
||||||
|
mock_traceback_monkeypatch = false
|
||||||
|
|
||||||
|
Note that this feature is automatically disabled with the ``--tb=native`` option. The underlying
|
||||||
|
mechanism used to suppress traceback entries from ``mock`` module does not work with that option
|
||||||
|
anyway plus it generates confusing messages on Python 3.5 due to exception chaining
|
||||||
|
|
||||||
|
.. _advanced assertions: https://pytest.org/latest/assert.html
|
||||||
|
|
||||||
|
|
||||||
|
Requirements
|
||||||
|
============
|
||||||
|
|
||||||
|
* Python 2.6+, Python 3.3+
|
||||||
|
* pytest
|
||||||
|
* mock (for Python 2)
|
||||||
|
|
||||||
|
|
||||||
|
Install
|
||||||
|
=======
|
||||||
|
|
||||||
|
Install using `pip <http://pip-installer.org/>`_:
|
||||||
|
|
||||||
|
.. code-block:: console
|
||||||
|
|
||||||
|
$ pip install pytest-mock
|
||||||
|
|
||||||
|
Changelog
|
||||||
|
=========
|
||||||
|
|
||||||
|
Please consult the `changelog page`_.
|
||||||
|
|
||||||
|
.. _changelog page: https://github.com/pytest-dev/pytest-mock/blob/master/CHANGELOG.rst
|
||||||
|
|
||||||
|
Why bother with a plugin?
|
||||||
|
=========================
|
||||||
|
|
||||||
|
There are a number of different ``patch`` usages in the standard ``mock`` API,
|
||||||
|
but IMHO they don't scale very well when you have more than one or two
|
||||||
|
patches to apply.
|
||||||
|
|
||||||
|
It may lead to an excessive nesting of ``with`` statements, breaking the flow
|
||||||
|
of the test:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
import mock
|
||||||
|
|
||||||
|
def test_unix_fs():
|
||||||
|
with mock.patch('os.remove'):
|
||||||
|
UnixFS.rm('file')
|
||||||
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
with mock.patch('os.listdir'):
|
||||||
|
assert UnixFS.ls('dir') == expected
|
||||||
|
# ...
|
||||||
|
|
||||||
|
with mock.patch('shutil.copy'):
|
||||||
|
UnixFS.cp('src', 'dst')
|
||||||
|
# ...
|
||||||
|
|
||||||
|
|
||||||
|
One can use ``patch`` as a decorator to improve the flow of the test:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
@mock.patch('os.remove')
|
||||||
|
@mock.patch('os.listdir')
|
||||||
|
@mock.patch('shutil.copy')
|
||||||
|
def test_unix_fs(mocked_copy, mocked_listdir, mocked_remove):
|
||||||
|
UnixFS.rm('file')
|
||||||
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
assert UnixFS.ls('dir') == expected
|
||||||
|
# ...
|
||||||
|
|
||||||
|
UnixFS.cp('src', 'dst')
|
||||||
|
# ...
|
||||||
|
|
||||||
|
But this poses a few disadvantages:
|
||||||
|
|
||||||
|
- test functions must receive the mock objects as parameter, even if you don't plan to
|
||||||
|
access them directly; also, order depends on the order of the decorated ``patch``
|
||||||
|
functions;
|
||||||
|
- receiving the mocks as parameters doesn't mix nicely with pytest's approach of
|
||||||
|
naming fixtures as parameters, or ``pytest.mark.parametrize``;
|
||||||
|
- you can't easily undo the mocking during the test execution;
|
||||||
|
|
||||||
|
|
||||||
|
**Note**
|
||||||
|
|
||||||
|
Although mocker's API is intentionally the same as ``mock.patch``'s, its uses as context managers and function decorators are **not** supported. The purpose of this plugin is to make the use of context managers and function decorators for mocking unnecessary. Indeed, trying to use the functionality in ``mocker`` in this manner can lead to non-intuitive errors:
|
||||||
|
|
||||||
.. code-block:: python
|
.. code-block:: python
|
||||||
|
|
||||||
|
@ -78,141 +250,9 @@ Note that, although mocker's API is intentionally the same as ``mock.patch``'s,
|
||||||
E AttributeError: __exit__
|
E AttributeError: __exit__
|
||||||
|
|
||||||
|
|
||||||
You can also access ``Mock`` and ``MagicMock`` directly using from ``mocker``
|
License
|
||||||
fixture:
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
def test_feature(mocker):
|
|
||||||
ret = [mocker.Mock(return_value=True), mocker.Mock(return_value=True)]
|
|
||||||
mocker.patch('mylib.func', side_effect=ret)
|
|
||||||
|
|
||||||
*New in version 0.5*
|
|
||||||
|
|
||||||
Spy
|
|
||||||
---
|
|
||||||
|
|
||||||
*New in version 0.6*
|
|
||||||
|
|
||||||
The spy acts exactly like the original method in all cases, except it allows use of `mock`
|
|
||||||
features with it, like retrieving call count.
|
|
||||||
|
|
||||||
From version 0.7 onward it also works for class and static methods. Originally it was only safe to
|
|
||||||
use with instance methods.
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
def test_spy(mocker):
|
|
||||||
class Foo(object):
|
|
||||||
def bar(self):
|
|
||||||
return 42
|
|
||||||
|
|
||||||
foo = Foo()
|
|
||||||
mocker.spy(foo, 'bar')
|
|
||||||
assert foo.bar() == 42
|
|
||||||
assert foo.bar.call_count == 1
|
|
||||||
|
|
||||||
Stub
|
|
||||||
----
|
|
||||||
|
|
||||||
*New in version 0.6*
|
|
||||||
|
|
||||||
The stub is a mock object that accepts any arguments and is useful to test callbacks, for instance.
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
def test_stub(mocker):
|
|
||||||
def foo(on_something):
|
|
||||||
on_something('foo', 'bar')
|
|
||||||
|
|
||||||
stub = mocker.stub()
|
|
||||||
|
|
||||||
foo(stub)
|
|
||||||
stub.assert_called_once_with('foo', 'bar')
|
|
||||||
|
|
||||||
Note
|
|
||||||
----
|
|
||||||
|
|
||||||
Prior to version ``0.4.0``, the ``mocker`` fixture was named ``mock``.
|
|
||||||
This was changed because naming the fixture ``mock`` conflicts with the
|
|
||||||
actual ``mock`` module, which made using it awkward when access to both the
|
|
||||||
module and the plugin were required within a test.
|
|
||||||
|
|
||||||
The old fixture ``mock`` still works, but its use is discouraged and will be
|
|
||||||
removed in version ``1.0``.
|
|
||||||
|
|
||||||
Requirements
|
|
||||||
============
|
|
||||||
|
|
||||||
* Python 2.6+, Python 3.2+
|
|
||||||
* pytest
|
|
||||||
* mock (for Python < 3.3)
|
|
||||||
|
|
||||||
|
|
||||||
Install
|
|
||||||
=======
|
=======
|
||||||
|
|
||||||
Install using `pip <http://pip-installer.org/>`_:
|
Distributed under the terms of the `MIT`_ license.
|
||||||
|
|
||||||
.. code-block:: console
|
.. _MIT: https://github.com/pytest-dev/pytest-mock/blob/master/LICENSE
|
||||||
|
|
||||||
$ pip install pytest-mock
|
|
||||||
|
|
||||||
Changelog
|
|
||||||
=========
|
|
||||||
|
|
||||||
Please consult `releases <https://github.com/pytest-dev/pytest-mock/releases>`_.
|
|
||||||
|
|
||||||
Why bother with a plugin?
|
|
||||||
=========================
|
|
||||||
|
|
||||||
There are a number of different ``patch`` usages in the standard ``mock`` API,
|
|
||||||
but IMHO they don't scale very well when you have more than one or two
|
|
||||||
patches to apply.
|
|
||||||
|
|
||||||
It may lead to an excessive nesting of ``with`` statements, breaking the flow
|
|
||||||
of the test:
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
import mock
|
|
||||||
|
|
||||||
def test_unix_fs():
|
|
||||||
with mock.patch('os.remove'):
|
|
||||||
UnixFS.rm('file')
|
|
||||||
os.remove.assert_called_once_with('file')
|
|
||||||
|
|
||||||
with mock.patch('os.listdir'):
|
|
||||||
assert UnixFS.ls('dir') == expected
|
|
||||||
# ...
|
|
||||||
|
|
||||||
with mock.patch('shutil.copy'):
|
|
||||||
UnixFS.cp('src', 'dst')
|
|
||||||
# ...
|
|
||||||
|
|
||||||
|
|
||||||
One can use ``patch`` as a decorator to improve the flow of the test:
|
|
||||||
|
|
||||||
.. code-block:: python
|
|
||||||
|
|
||||||
@mock.patch('os.remove')
|
|
||||||
@mock.patch('os.listdir')
|
|
||||||
@mock.patch('shutil.copy')
|
|
||||||
def test_unix_fs(mocked_copy, mocked_listdir, mocked_remove):
|
|
||||||
UnixFS.rm('file')
|
|
||||||
os.remove.assert_called_once_with('file')
|
|
||||||
|
|
||||||
assert UnixFS.ls('dir') == expected
|
|
||||||
# ...
|
|
||||||
|
|
||||||
UnixFS.cp('src', 'dst')
|
|
||||||
# ...
|
|
||||||
|
|
||||||
But this poses a few disadvantages:
|
|
||||||
|
|
||||||
- test functions must receive the mock objects as parameter, even if you don't plan to
|
|
||||||
access them directly; also, order depends on the order of the decorated ``patch``
|
|
||||||
functions;
|
|
||||||
- receiving the mocks as parameters doesn't mix nicely with pytest's approach of
|
|
||||||
naming fixtures as parameters, or ``pytest.mark.parametrize``;
|
|
||||||
- you can't easily undo the mocking during the test execution;
|
|
||||||
|
|
281
pytest_mock.egg-info/PKG-INFO
Normal file
281
pytest_mock.egg-info/PKG-INFO
Normal file
|
@ -0,0 +1,281 @@
|
||||||
|
Metadata-Version: 1.1
|
||||||
|
Name: pytest-mock
|
||||||
|
Version: 1.1
|
||||||
|
Summary: Thin-wrapper around the mock package for easier use with py.test
|
||||||
|
Home-page: https://github.com/pytest-dev/pytest-mock/
|
||||||
|
Author: Bruno Oliveira
|
||||||
|
Author-email: nicoddemus@gmail.com
|
||||||
|
License: MIT
|
||||||
|
Description: ===========
|
||||||
|
pytest-mock
|
||||||
|
===========
|
||||||
|
|
||||||
|
This plugin installs a ``mocker`` fixture which is a thin-wrapper around the patching API
|
||||||
|
provided by the `mock package <http://pypi.python.org/pypi/mock>`_,
|
||||||
|
but with the benefit of not having to worry about undoing patches at the end
|
||||||
|
of a test:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
|
||||||
|
def test_unix_fs(mocker):
|
||||||
|
mocker.patch('os.remove')
|
||||||
|
UnixFS.rm('file')
|
||||||
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
|
||||||
|
.. Using PNG badges because PyPI doesn't support SVG
|
||||||
|
|
||||||
|
|python| |version| |downloads| |ci| |appveyor| |coverage|
|
||||||
|
|
||||||
|
.. |version| image:: http://img.shields.io/pypi/v/pytest-mock.png
|
||||||
|
:target: https://pypi.python.org/pypi/pytest-mock
|
||||||
|
|
||||||
|
.. |downloads| image:: http://img.shields.io/pypi/dm/pytest-mock.png
|
||||||
|
:target: https://pypi.python.org/pypi/pytest-mock
|
||||||
|
|
||||||
|
.. |ci| image:: http://img.shields.io/travis/pytest-dev/pytest-mock.png
|
||||||
|
:target: https://travis-ci.org/pytest-dev/pytest-mock
|
||||||
|
|
||||||
|
.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/pid1t7iuwhkm9eh6/branch/master?svg=true
|
||||||
|
:target: https://ci.appveyor.com/project/pytestbot/pytest-mock
|
||||||
|
|
||||||
|
.. |coverage| image:: http://img.shields.io/coveralls/pytest-dev/pytest-mock.png
|
||||||
|
:target: https://coveralls.io/r/pytest-dev/pytest-mock
|
||||||
|
|
||||||
|
.. |python| image:: https://img.shields.io/pypi/pyversions/pytest-mock.svg
|
||||||
|
:target: https://pypi.python.org/pypi/pytest-mock/
|
||||||
|
|
||||||
|
Usage
|
||||||
|
=====
|
||||||
|
|
||||||
|
The ``mocker`` fixture has the same API as
|
||||||
|
`mock.patch <http://www.voidspace.org.uk/python/mock/patch.html#patch-decorators>`_,
|
||||||
|
supporting the same arguments:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
def test_foo(mocker):
|
||||||
|
# all valid calls
|
||||||
|
mocker.patch('os.remove')
|
||||||
|
mocker.patch.object(os, 'listdir', autospec=True)
|
||||||
|
mocked_isfile = mocker.patch('os.path.isfile')
|
||||||
|
|
||||||
|
The supported methods are:
|
||||||
|
|
||||||
|
* ``mocker.patch``: see http://www.voidspace.org.uk/python/mock/patch.html#patch.
|
||||||
|
* ``mocker.patch.object``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-object.
|
||||||
|
* ``mocker.patch.multiple``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-multiple.
|
||||||
|
* ``mocker.patch.dict``: see http://www.voidspace.org.uk/python/mock/patch.html#patch-dict.
|
||||||
|
* ``mocker.stopall()``: stops all active patches up to this point.
|
||||||
|
* ``mocker.resetall()``: calls ``reset_mock()`` in all mocked objects up to this point.
|
||||||
|
|
||||||
|
Some objects from the ``mock`` module are accessible directly from ``mocker`` for convenience:
|
||||||
|
|
||||||
|
* `Mock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.Mock>`_
|
||||||
|
* `MagicMock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.MagicMock>`_
|
||||||
|
* `PropertyMock <https://docs.python.org/3/library/unittest.mock.html#unittest.mock.PropertyMock>`_
|
||||||
|
* `ANY <https://docs.python.org/3/library/unittest.mock.html#any>`_
|
||||||
|
* `call <https://docs.python.org/3/library/unittest.mock.html#call>`_ *(Version 1.1)*
|
||||||
|
|
||||||
|
|
||||||
|
Spy
|
||||||
|
---
|
||||||
|
|
||||||
|
The spy acts exactly like the original method in all cases, except it allows use of `mock`
|
||||||
|
features with it, like retrieving call count. It also works for class and static methods.
|
||||||
|
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
def test_spy(mocker):
|
||||||
|
class Foo(object):
|
||||||
|
def bar(self):
|
||||||
|
return 42
|
||||||
|
|
||||||
|
foo = Foo()
|
||||||
|
mocker.spy(foo, 'bar')
|
||||||
|
assert foo.bar() == 42
|
||||||
|
assert foo.bar.call_count == 1
|
||||||
|
|
||||||
|
Stub
|
||||||
|
----
|
||||||
|
|
||||||
|
|
||||||
|
The stub is a mock object that accepts any arguments and is useful to test callbacks, for instance.
|
||||||
|
May be passed a name to be used by the constructed stub object in its repr (useful for debugging).
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
def test_stub(mocker):
|
||||||
|
def foo(on_something):
|
||||||
|
on_something('foo', 'bar')
|
||||||
|
|
||||||
|
stub = mocker.stub(name='on_something_stub')
|
||||||
|
|
||||||
|
foo(stub)
|
||||||
|
stub.assert_called_once_with('foo', 'bar')
|
||||||
|
|
||||||
|
|
||||||
|
Improved reporting of mock call assertion errors
|
||||||
|
------------------------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
This plugin monkeypatches the mock library to improve pytest output for failures
|
||||||
|
of mock call assertions like ``Mock.assert_called_with()`` by hiding internal traceback
|
||||||
|
entries from the ``mock`` module.
|
||||||
|
|
||||||
|
It also adds introspection information on differing call arguments when
|
||||||
|
calling the helper methods. This features catches `AssertionError` raised in
|
||||||
|
the method, and uses py.test's own `advanced assertions`_ to return a better
|
||||||
|
diff::
|
||||||
|
|
||||||
|
|
||||||
|
m = mocker.patch.object(DS, 'create_char')
|
||||||
|
DS().create_char('Raistlin', class_='mag', gift=12)
|
||||||
|
> m.assert_called_once_with('Raistlin', class_='mage', gift=12)
|
||||||
|
E assert {'class_': 'mag', 'gift': 12} == {'class_': 'mage', 'gift': 12}
|
||||||
|
E Omitting 1 identical items, use -v to show
|
||||||
|
E Differing items:
|
||||||
|
E {'class_': 'mag'} != {'class_': 'mage'}
|
||||||
|
E Use -v to get the full diff
|
||||||
|
|
||||||
|
|
||||||
|
This is useful when asserting mock calls with many/nested arguments and trying
|
||||||
|
to quickly see the difference.
|
||||||
|
|
||||||
|
This feature is probably safe, but if you encounter any problems it can be disabled in
|
||||||
|
your ``pytest.ini`` file:
|
||||||
|
|
||||||
|
.. code-block:: ini
|
||||||
|
|
||||||
|
[pytest]
|
||||||
|
mock_traceback_monkeypatch = false
|
||||||
|
|
||||||
|
Note that this feature is automatically disabled with the ``--tb=native`` option. The underlying
|
||||||
|
mechanism used to suppress traceback entries from ``mock`` module does not work with that option
|
||||||
|
anyway plus it generates confusing messages on Python 3.5 due to exception chaining
|
||||||
|
|
||||||
|
.. _advanced assertions: https://pytest.org/latest/assert.html
|
||||||
|
|
||||||
|
|
||||||
|
Requirements
|
||||||
|
============
|
||||||
|
|
||||||
|
* Python 2.6+, Python 3.3+
|
||||||
|
* pytest
|
||||||
|
* mock (for Python 2)
|
||||||
|
|
||||||
|
|
||||||
|
Install
|
||||||
|
=======
|
||||||
|
|
||||||
|
Install using `pip <http://pip-installer.org/>`_:
|
||||||
|
|
||||||
|
.. code-block:: console
|
||||||
|
|
||||||
|
$ pip install pytest-mock
|
||||||
|
|
||||||
|
Changelog
|
||||||
|
=========
|
||||||
|
|
||||||
|
Please consult the `changelog page`_.
|
||||||
|
|
||||||
|
.. _changelog page: https://github.com/pytest-dev/pytest-mock/blob/master/CHANGELOG.rst
|
||||||
|
|
||||||
|
Why bother with a plugin?
|
||||||
|
=========================
|
||||||
|
|
||||||
|
There are a number of different ``patch`` usages in the standard ``mock`` API,
|
||||||
|
but IMHO they don't scale very well when you have more than one or two
|
||||||
|
patches to apply.
|
||||||
|
|
||||||
|
It may lead to an excessive nesting of ``with`` statements, breaking the flow
|
||||||
|
of the test:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
import mock
|
||||||
|
|
||||||
|
def test_unix_fs():
|
||||||
|
with mock.patch('os.remove'):
|
||||||
|
UnixFS.rm('file')
|
||||||
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
with mock.patch('os.listdir'):
|
||||||
|
assert UnixFS.ls('dir') == expected
|
||||||
|
# ...
|
||||||
|
|
||||||
|
with mock.patch('shutil.copy'):
|
||||||
|
UnixFS.cp('src', 'dst')
|
||||||
|
# ...
|
||||||
|
|
||||||
|
|
||||||
|
One can use ``patch`` as a decorator to improve the flow of the test:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
@mock.patch('os.remove')
|
||||||
|
@mock.patch('os.listdir')
|
||||||
|
@mock.patch('shutil.copy')
|
||||||
|
def test_unix_fs(mocked_copy, mocked_listdir, mocked_remove):
|
||||||
|
UnixFS.rm('file')
|
||||||
|
os.remove.assert_called_once_with('file')
|
||||||
|
|
||||||
|
assert UnixFS.ls('dir') == expected
|
||||||
|
# ...
|
||||||
|
|
||||||
|
UnixFS.cp('src', 'dst')
|
||||||
|
# ...
|
||||||
|
|
||||||
|
But this poses a few disadvantages:
|
||||||
|
|
||||||
|
- test functions must receive the mock objects as parameter, even if you don't plan to
|
||||||
|
access them directly; also, order depends on the order of the decorated ``patch``
|
||||||
|
functions;
|
||||||
|
- receiving the mocks as parameters doesn't mix nicely with pytest's approach of
|
||||||
|
naming fixtures as parameters, or ``pytest.mark.parametrize``;
|
||||||
|
- you can't easily undo the mocking during the test execution;
|
||||||
|
|
||||||
|
|
||||||
|
**Note**
|
||||||
|
|
||||||
|
Although mocker's API is intentionally the same as ``mock.patch``'s, its uses as context managers and function decorators are **not** supported. The purpose of this plugin is to make the use of context managers and function decorators for mocking unnecessary. Indeed, trying to use the functionality in ``mocker`` in this manner can lead to non-intuitive errors:
|
||||||
|
|
||||||
|
.. code-block:: python
|
||||||
|
|
||||||
|
def test_context_manager(mocker):
|
||||||
|
a = A()
|
||||||
|
with mocker.patch.object(a, 'doIt', return_value=True, autospec=True):
|
||||||
|
assert a.doIt() == True
|
||||||
|
|
||||||
|
.. code-block:: console
|
||||||
|
|
||||||
|
================================== FAILURES ===================================
|
||||||
|
____________________________ test_context_manager _____________________________
|
||||||
|
in test_context_manager
|
||||||
|
with mocker.patch.object(a, 'doIt', return_value=True, autospec=True):
|
||||||
|
E AttributeError: __exit__
|
||||||
|
|
||||||
|
|
||||||
|
License
|
||||||
|
=======
|
||||||
|
|
||||||
|
Distributed under the terms of the `MIT`_ license.
|
||||||
|
|
||||||
|
.. _MIT: https://github.com/pytest-dev/pytest-mock/blob/master/LICENSE
|
||||||
|
|
||||||
|
Keywords: pytest mock
|
||||||
|
Platform: any
|
||||||
|
Classifier: Development Status :: 5 - Production/Stable
|
||||||
|
Classifier: Framework :: Pytest
|
||||||
|
Classifier: Intended Audience :: Developers
|
||||||
|
Classifier: License :: OSI Approved :: MIT License
|
||||||
|
Classifier: Operating System :: OS Independent
|
||||||
|
Classifier: Programming Language :: Python :: 2.6
|
||||||
|
Classifier: Programming Language :: Python :: 2.7
|
||||||
|
Classifier: Programming Language :: Python :: 3
|
||||||
|
Classifier: Programming Language :: Python :: 3.3
|
||||||
|
Classifier: Programming Language :: Python :: 3.4
|
||||||
|
Classifier: Programming Language :: Python :: 3.5
|
||||||
|
Classifier: Topic :: Software Development :: Testing
|
13
pytest_mock.egg-info/SOURCES.txt
Normal file
13
pytest_mock.egg-info/SOURCES.txt
Normal file
|
@ -0,0 +1,13 @@
|
||||||
|
LICENSE
|
||||||
|
MANIFEST.in
|
||||||
|
README.rst
|
||||||
|
pytest_mock.py
|
||||||
|
setup.cfg
|
||||||
|
setup.py
|
||||||
|
test_pytest_mock.py
|
||||||
|
pytest_mock.egg-info/PKG-INFO
|
||||||
|
pytest_mock.egg-info/SOURCES.txt
|
||||||
|
pytest_mock.egg-info/dependency_links.txt
|
||||||
|
pytest_mock.egg-info/entry_points.txt
|
||||||
|
pytest_mock.egg-info/requires.txt
|
||||||
|
pytest_mock.egg-info/top_level.txt
|
1
pytest_mock.egg-info/dependency_links.txt
Normal file
1
pytest_mock.egg-info/dependency_links.txt
Normal file
|
@ -0,0 +1 @@
|
||||||
|
|
3
pytest_mock.egg-info/entry_points.txt
Normal file
3
pytest_mock.egg-info/entry_points.txt
Normal file
|
@ -0,0 +1,3 @@
|
||||||
|
[pytest11]
|
||||||
|
pytest_mock = pytest_mock
|
||||||
|
|
4
pytest_mock.egg-info/requires.txt
Normal file
4
pytest_mock.egg-info/requires.txt
Normal file
|
@ -0,0 +1,4 @@
|
||||||
|
pytest>=2.7
|
||||||
|
|
||||||
|
[:python_version=="2.6" or python_version=="2.7"]
|
||||||
|
mock
|
1
pytest_mock.egg-info/top_level.txt
Normal file
1
pytest_mock.egg-info/top_level.txt
Normal file
|
@ -0,0 +1 @@
|
||||||
|
pytest_mock
|
150
pytest_mock.py
150
pytest_mock.py
|
@ -1,14 +1,15 @@
|
||||||
import sys
|
|
||||||
import inspect
|
import inspect
|
||||||
|
import sys
|
||||||
|
|
||||||
import pytest
|
import pytest
|
||||||
|
|
||||||
|
|
||||||
if sys.version_info >= (3, 3): # pragma: no cover
|
if sys.version_info >= (3, 3): # pragma: no cover
|
||||||
import unittest.mock as mock_module
|
import unittest.mock as mock_module
|
||||||
else:
|
else:
|
||||||
import mock as mock_module
|
import mock as mock_module
|
||||||
|
|
||||||
|
version = '1.1'
|
||||||
|
|
||||||
|
|
||||||
class MockFixture(object):
|
class MockFixture(object):
|
||||||
"""
|
"""
|
||||||
|
@ -18,11 +19,21 @@ class MockFixture(object):
|
||||||
|
|
||||||
Mock = mock_module.Mock
|
Mock = mock_module.Mock
|
||||||
MagicMock = mock_module.MagicMock
|
MagicMock = mock_module.MagicMock
|
||||||
|
PropertyMock = mock_module.PropertyMock
|
||||||
|
call = mock_module.call
|
||||||
ANY = mock_module.ANY
|
ANY = mock_module.ANY
|
||||||
|
|
||||||
def __init__(self):
|
def __init__(self):
|
||||||
self._patches = [] # list of mock._patch objects
|
self._patches = [] # list of mock._patch objects
|
||||||
self.patch = self._Patcher(self._patches)
|
self._mocks = [] # list of MagicMock objects
|
||||||
|
self.patch = self._Patcher(self._patches, self._mocks)
|
||||||
|
|
||||||
|
def resetall(self):
|
||||||
|
"""
|
||||||
|
Call reset_mock() on all patchers started by this fixture.
|
||||||
|
"""
|
||||||
|
for m in self._mocks:
|
||||||
|
m.reset_mock()
|
||||||
|
|
||||||
def stopall(self):
|
def stopall(self):
|
||||||
"""
|
"""
|
||||||
|
@ -32,6 +43,7 @@ class MockFixture(object):
|
||||||
for p in reversed(self._patches):
|
for p in reversed(self._patches):
|
||||||
p.stop()
|
p.stop()
|
||||||
self._patches[:] = []
|
self._patches[:] = []
|
||||||
|
self._mocks[:] = []
|
||||||
|
|
||||||
def spy(self, obj, name):
|
def spy(self, obj, name):
|
||||||
"""
|
"""
|
||||||
|
@ -49,25 +61,30 @@ class MockFixture(object):
|
||||||
# Can't use autospec classmethod or staticmethod objects
|
# Can't use autospec classmethod or staticmethod objects
|
||||||
# see: https://bugs.python.org/issue23078
|
# see: https://bugs.python.org/issue23078
|
||||||
if inspect.isclass(obj):
|
if inspect.isclass(obj):
|
||||||
# bypass class descriptor:
|
# Bypass class descriptor:
|
||||||
# http://stackoverflow.com/questions/14187973/python3-check-if-method-is-static
|
# http://stackoverflow.com/questions/14187973/python3-check-if-method-is-static
|
||||||
value = obj.__getattribute__(obj, name)
|
try:
|
||||||
if isinstance(value, (classmethod, staticmethod)):
|
value = obj.__getattribute__(obj, name)
|
||||||
autospec = False
|
except AttributeError:
|
||||||
|
pass
|
||||||
|
else:
|
||||||
|
if isinstance(value, (classmethod, staticmethod)):
|
||||||
|
autospec = False
|
||||||
|
|
||||||
result = self.patch.object(obj, name, side_effect=method,
|
result = self.patch.object(obj, name, side_effect=method,
|
||||||
autospec=autospec)
|
autospec=autospec)
|
||||||
return result
|
return result
|
||||||
|
|
||||||
def stub(self):
|
def stub(self, name=None):
|
||||||
"""
|
"""
|
||||||
Creates a stub method. It accepts any arguments. Ideal to register to
|
Creates a stub method. It accepts any arguments. Ideal to register to
|
||||||
callbacks in tests.
|
callbacks in tests.
|
||||||
|
|
||||||
|
:param name: the constructed stub's name as used in repr
|
||||||
:rtype: mock.MagicMock
|
:rtype: mock.MagicMock
|
||||||
:return: Stub object.
|
:return: Stub object.
|
||||||
"""
|
"""
|
||||||
return mock_module.MagicMock(spec=lambda *args, **kwargs: None)
|
return mock_module.MagicMock(spec=lambda *args, **kwargs: None, name=name)
|
||||||
|
|
||||||
class _Patcher(object):
|
class _Patcher(object):
|
||||||
"""
|
"""
|
||||||
|
@ -75,8 +92,9 @@ class MockFixture(object):
|
||||||
etc. We need this indirection to keep the same API of the mock package.
|
etc. We need this indirection to keep the same API of the mock package.
|
||||||
"""
|
"""
|
||||||
|
|
||||||
def __init__(self, patches):
|
def __init__(self, patches, mocks):
|
||||||
self._patches = patches
|
self._patches = patches
|
||||||
|
self._mocks = mocks
|
||||||
|
|
||||||
def _start_patch(self, mock_func, *args, **kwargs):
|
def _start_patch(self, mock_func, *args, **kwargs):
|
||||||
"""Patches something by calling the given function from the mock
|
"""Patches something by calling the given function from the mock
|
||||||
|
@ -86,6 +104,7 @@ class MockFixture(object):
|
||||||
p = mock_func(*args, **kwargs)
|
p = mock_func(*args, **kwargs)
|
||||||
mocked = p.start()
|
mocked = p.start()
|
||||||
self._patches.append(p)
|
self._patches.append(p)
|
||||||
|
self._mocks.append(mocked)
|
||||||
return mocked
|
return mocked
|
||||||
|
|
||||||
def object(self, *args, **kwargs):
|
def object(self, *args, **kwargs):
|
||||||
|
@ -126,3 +145,114 @@ def mock(mocker):
|
||||||
warnings.warn('"mock" fixture has been deprecated, use "mocker" instead',
|
warnings.warn('"mock" fixture has been deprecated, use "mocker" instead',
|
||||||
DeprecationWarning)
|
DeprecationWarning)
|
||||||
return mocker
|
return mocker
|
||||||
|
|
||||||
|
|
||||||
|
_mock_module_patches = []
|
||||||
|
_mock_module_originals = {}
|
||||||
|
|
||||||
|
|
||||||
|
def assert_wrapper(__wrapped_mock_method__, *args, **kwargs):
|
||||||
|
__tracebackhide__ = True
|
||||||
|
try:
|
||||||
|
__wrapped_mock_method__(*args, **kwargs)
|
||||||
|
except AssertionError as e:
|
||||||
|
__mock_self = args[0]
|
||||||
|
if __mock_self.call_args is not None:
|
||||||
|
actual_args, actual_kwargs = __mock_self.call_args
|
||||||
|
assert actual_args == args[1:]
|
||||||
|
assert actual_kwargs == kwargs
|
||||||
|
raise AssertionError(*e.args)
|
||||||
|
|
||||||
|
|
||||||
|
def wrap_assert_not_called(*args, **kwargs):
|
||||||
|
__tracebackhide__ = True
|
||||||
|
assert_wrapper(_mock_module_originals["assert_not_called"],
|
||||||
|
*args, **kwargs)
|
||||||
|
|
||||||
|
|
||||||
|
def wrap_assert_called_with(*args, **kwargs):
|
||||||
|
__tracebackhide__ = True
|
||||||
|
assert_wrapper(_mock_module_originals["assert_called_with"],
|
||||||
|
*args, **kwargs)
|
||||||
|
|
||||||
|
|
||||||
|
def wrap_assert_called_once_with(*args, **kwargs):
|
||||||
|
__tracebackhide__ = True
|
||||||
|
assert_wrapper(_mock_module_originals["assert_called_once_with"],
|
||||||
|
*args, **kwargs)
|
||||||
|
|
||||||
|
|
||||||
|
def wrap_assert_has_calls(*args, **kwargs):
|
||||||
|
__tracebackhide__ = True
|
||||||
|
assert_wrapper(_mock_module_originals["assert_has_calls"],
|
||||||
|
*args, **kwargs)
|
||||||
|
|
||||||
|
|
||||||
|
def wrap_assert_any_call(*args, **kwargs):
|
||||||
|
__tracebackhide__ = True
|
||||||
|
assert_wrapper(_mock_module_originals["assert_any_call"],
|
||||||
|
*args, **kwargs)
|
||||||
|
|
||||||
|
|
||||||
|
def wrap_assert_methods(config):
|
||||||
|
"""
|
||||||
|
Wrap assert methods of mock module so we can hide their traceback and
|
||||||
|
add introspection information to specified argument asserts.
|
||||||
|
"""
|
||||||
|
# Make sure we only do this once
|
||||||
|
if _mock_module_originals:
|
||||||
|
return
|
||||||
|
|
||||||
|
wrappers = {
|
||||||
|
'assert_not_called': wrap_assert_not_called,
|
||||||
|
'assert_called_with': wrap_assert_called_with,
|
||||||
|
'assert_called_once_with': wrap_assert_called_once_with,
|
||||||
|
'assert_has_calls': wrap_assert_has_calls,
|
||||||
|
'assert_any_call': wrap_assert_any_call,
|
||||||
|
}
|
||||||
|
for method, wrapper in wrappers.items():
|
||||||
|
try:
|
||||||
|
original = getattr(mock_module.NonCallableMock, method)
|
||||||
|
except AttributeError:
|
||||||
|
continue
|
||||||
|
_mock_module_originals[method] = original
|
||||||
|
patcher = mock_module.patch.object(
|
||||||
|
mock_module.NonCallableMock, method, wrapper)
|
||||||
|
patcher.start()
|
||||||
|
_mock_module_patches.append(patcher)
|
||||||
|
|
||||||
|
if hasattr(config, 'add_cleanup'):
|
||||||
|
add_cleanup = config.add_cleanup
|
||||||
|
else:
|
||||||
|
# pytest 2.7 compatibility
|
||||||
|
add_cleanup = config._cleanup.append
|
||||||
|
add_cleanup(unwrap_assert_methods)
|
||||||
|
|
||||||
|
|
||||||
|
def unwrap_assert_methods():
|
||||||
|
for patcher in _mock_module_patches:
|
||||||
|
patcher.stop()
|
||||||
|
_mock_module_patches[:] = []
|
||||||
|
_mock_module_originals.clear()
|
||||||
|
|
||||||
|
|
||||||
|
def pytest_addoption(parser):
|
||||||
|
parser.addini('mock_traceback_monkeypatch',
|
||||||
|
'Monkeypatch the mock library to improve reporting of the '
|
||||||
|
'assert_called_... methods',
|
||||||
|
default=True)
|
||||||
|
|
||||||
|
|
||||||
|
def parse_ini_boolean(value):
|
||||||
|
if value in (True, False):
|
||||||
|
return value
|
||||||
|
try:
|
||||||
|
return {'true': True, 'false': False}[value.lower()]
|
||||||
|
except KeyError:
|
||||||
|
raise ValueError('unknown string for bool: %r' % value)
|
||||||
|
|
||||||
|
|
||||||
|
def pytest_configure(config):
|
||||||
|
tb = config.getoption('--tb')
|
||||||
|
if parse_ini_boolean(config.getini('mock_traceback_monkeypatch')) and tb != 'native':
|
||||||
|
wrap_assert_methods(config)
|
||||||
|
|
18
setup.py
18
setup.py
|
@ -1,35 +1,43 @@
|
||||||
|
import re
|
||||||
|
|
||||||
from setuptools import setup
|
from setuptools import setup
|
||||||
|
|
||||||
|
with open('pytest_mock.py') as f:
|
||||||
|
m = re.search("version = '(.*)'", f.read())
|
||||||
|
assert m is not None
|
||||||
|
version = m.group(1)
|
||||||
|
|
||||||
setup(
|
setup(
|
||||||
name='pytest-mock',
|
name='pytest-mock',
|
||||||
version='0.8.1',
|
version=version,
|
||||||
entry_points={
|
entry_points={
|
||||||
'pytest11': ['pytest_mock = pytest_mock'],
|
'pytest11': ['pytest_mock = pytest_mock'],
|
||||||
},
|
},
|
||||||
py_modules=['pytest_mock'],
|
py_modules=['pytest_mock'],
|
||||||
platforms='any',
|
platforms='any',
|
||||||
install_requires=[
|
install_requires=[
|
||||||
'pytest>=2.4',
|
'pytest>=2.7',
|
||||||
],
|
],
|
||||||
extras_require={
|
extras_require={
|
||||||
':python_version=="2.6" or python_version=="2.7"': ['mock'],
|
':python_version=="2.6" or python_version=="2.7"': ['mock'],
|
||||||
},
|
},
|
||||||
url='https://github.com/pytest-dev/pytest-mock/',
|
url='https://github.com/pytest-dev/pytest-mock/',
|
||||||
license='LGPL',
|
license='MIT',
|
||||||
author='Bruno Oliveira',
|
author='Bruno Oliveira',
|
||||||
author_email='nicoddemus@gmail.com',
|
author_email='nicoddemus@gmail.com',
|
||||||
description='Thin-wrapper around the mock package for easier use with py.test',
|
description='Thin-wrapper around the mock package for easier use with py.test',
|
||||||
long_description=open('README.rst').read(),
|
long_description=open('README.rst').read(),
|
||||||
keywords="pytest mock",
|
keywords="pytest mock",
|
||||||
classifiers=[
|
classifiers=[
|
||||||
'Development Status :: 3 - Alpha',
|
'Development Status :: 5 - Production/Stable',
|
||||||
|
'Framework :: Pytest',
|
||||||
'Intended Audience :: Developers',
|
'Intended Audience :: Developers',
|
||||||
'License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)',
|
'License :: OSI Approved :: MIT License',
|
||||||
'Operating System :: OS Independent',
|
'Operating System :: OS Independent',
|
||||||
'Programming Language :: Python :: 2.6',
|
'Programming Language :: Python :: 2.6',
|
||||||
'Programming Language :: Python :: 2.7',
|
'Programming Language :: Python :: 2.7',
|
||||||
'Programming Language :: Python :: 3',
|
'Programming Language :: Python :: 3',
|
||||||
|
'Programming Language :: Python :: 3.3',
|
||||||
'Programming Language :: Python :: 3.4',
|
'Programming Language :: Python :: 3.4',
|
||||||
'Programming Language :: Python :: 3.5',
|
'Programming Language :: Python :: 3.5',
|
||||||
'Topic :: Software Development :: Testing',
|
'Topic :: Software Development :: Testing',
|
||||||
|
|
|
@ -1,9 +1,12 @@
|
||||||
import os
|
import os
|
||||||
import platform
|
import platform
|
||||||
|
import sys
|
||||||
|
from contextlib import contextmanager
|
||||||
|
|
||||||
|
import py.code
|
||||||
|
|
||||||
import pytest
|
import pytest
|
||||||
|
|
||||||
|
|
||||||
pytest_plugins = 'pytester'
|
pytest_plugins = 'pytester'
|
||||||
|
|
||||||
# could not make some of the tests work on PyPy, patches are welcome!
|
# could not make some of the tests work on PyPy, patches are welcome!
|
||||||
|
@ -129,28 +132,58 @@ def test_deprecated_mock(mock, tmpdir):
|
||||||
assert os.listdir(str(tmpdir)) == []
|
assert os.listdir(str(tmpdir)) == []
|
||||||
|
|
||||||
|
|
||||||
def test_mocker_has_magic_mock_class_as_attribute_for_instantiation():
|
@pytest.mark.parametrize('name', ['MagicMock', 'PropertyMock', 'Mock', 'call', 'ANY'])
|
||||||
|
def test_mocker_aliases(name):
|
||||||
from pytest_mock import mock_module, MockFixture
|
from pytest_mock import mock_module, MockFixture
|
||||||
|
|
||||||
mocker = MockFixture()
|
mocker = MockFixture()
|
||||||
assert isinstance(mocker.MagicMock(), mock_module.MagicMock)
|
assert getattr(mocker, name) is getattr(mock_module, name)
|
||||||
|
|
||||||
|
|
||||||
def test_mocker_has_mock_class_as_attribute_for_instantiation():
|
def test_mocker_resetall(mocker):
|
||||||
from pytest_mock import mock_module, MockFixture
|
listdir = mocker.patch('os.listdir')
|
||||||
|
open = mocker.patch('os.open')
|
||||||
|
|
||||||
mocker = MockFixture()
|
listdir("/tmp")
|
||||||
assert isinstance(mocker.Mock(), mock_module.Mock)
|
open("/tmp/foo.txt")
|
||||||
|
listdir.assert_called_once_with("/tmp")
|
||||||
|
open.assert_called_once_with("/tmp/foo.txt")
|
||||||
|
|
||||||
|
mocker.resetall()
|
||||||
|
|
||||||
|
assert not listdir.called
|
||||||
|
assert not open.called
|
||||||
|
|
||||||
|
|
||||||
def test_mocker_stub(mocker):
|
class TestMockerStub:
|
||||||
def foo(on_something):
|
def test_call(self, mocker):
|
||||||
on_something('foo', 'bar')
|
stub = mocker.stub()
|
||||||
|
stub('foo', 'bar')
|
||||||
|
stub.assert_called_once_with('foo', 'bar')
|
||||||
|
|
||||||
stub = mocker.stub()
|
def test_repr_with_no_name(self, mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
assert not 'name' in repr(stub)
|
||||||
|
|
||||||
foo(stub)
|
def test_repr_with_name(self, mocker):
|
||||||
stub.assert_called_once_with('foo', 'bar')
|
test_name = 'funny walk'
|
||||||
|
stub = mocker.stub(name=test_name)
|
||||||
|
assert "name={0!r}".format(test_name) in repr(stub)
|
||||||
|
|
||||||
|
def __test_failure_message(self, mocker, **kwargs):
|
||||||
|
expected_name = kwargs.get('name') or 'mock'
|
||||||
|
expected_message = 'Expected call: {0}()\nNot called'.format(expected_name)
|
||||||
|
stub = mocker.stub(**kwargs)
|
||||||
|
with pytest.raises(AssertionError) as exc_info:
|
||||||
|
stub.assert_called_with()
|
||||||
|
assert exc_info.value.msg == expected_message
|
||||||
|
|
||||||
|
def test_failure_message_with_no_name(self, mocker):
|
||||||
|
self.__test_failure_message(mocker)
|
||||||
|
|
||||||
|
@pytest.mark.parametrize('name', (None, '', 'f', 'The Castle of aaarrrrggh'))
|
||||||
|
def test_failure_message_with_name(self, mocker, name):
|
||||||
|
self.__test_failure_message(mocker, name=name)
|
||||||
|
|
||||||
|
|
||||||
def test_instance_method_spy(mocker):
|
def test_instance_method_spy(mocker):
|
||||||
|
@ -186,6 +219,27 @@ def test_instance_method_by_class_spy(mocker):
|
||||||
assert spy.call_args_list == calls
|
assert spy.call_args_list == calls
|
||||||
|
|
||||||
|
|
||||||
|
@skip_pypy
|
||||||
|
def test_instance_method_by_subclass_spy(mocker):
|
||||||
|
from pytest_mock import mock_module
|
||||||
|
|
||||||
|
class Base(object):
|
||||||
|
|
||||||
|
def bar(self, arg):
|
||||||
|
return arg * 2
|
||||||
|
|
||||||
|
class Foo(Base):
|
||||||
|
pass
|
||||||
|
|
||||||
|
spy = mocker.spy(Foo, 'bar')
|
||||||
|
foo = Foo()
|
||||||
|
other = Foo()
|
||||||
|
assert foo.bar(arg=10) == 20
|
||||||
|
assert other.bar(arg=10) == 20
|
||||||
|
calls = [mock_module.call(foo, arg=10), mock_module.call(other, arg=10)]
|
||||||
|
assert spy.call_args_list == calls
|
||||||
|
|
||||||
|
|
||||||
@skip_pypy
|
@skip_pypy
|
||||||
def test_class_method_spy(mocker):
|
def test_class_method_spy(mocker):
|
||||||
class Foo(object):
|
class Foo(object):
|
||||||
|
@ -200,6 +254,24 @@ def test_class_method_spy(mocker):
|
||||||
spy.assert_called_once_with(arg=10)
|
spy.assert_called_once_with(arg=10)
|
||||||
|
|
||||||
|
|
||||||
|
@skip_pypy
|
||||||
|
@pytest.mark.xfail(sys.version_info[0] == 2, reason='does not work on Python 2')
|
||||||
|
def test_class_method_subclass_spy(mocker):
|
||||||
|
class Base(object):
|
||||||
|
|
||||||
|
@classmethod
|
||||||
|
def bar(self, arg):
|
||||||
|
return arg * 2
|
||||||
|
|
||||||
|
class Foo(Base):
|
||||||
|
pass
|
||||||
|
|
||||||
|
spy = mocker.spy(Foo, 'bar')
|
||||||
|
assert Foo.bar(arg=10) == 20
|
||||||
|
Foo.bar.assert_called_once_with(arg=10)
|
||||||
|
spy.assert_called_once_with(arg=10)
|
||||||
|
|
||||||
|
|
||||||
@skip_pypy
|
@skip_pypy
|
||||||
def test_class_method_with_metaclass_spy(mocker):
|
def test_class_method_with_metaclass_spy(mocker):
|
||||||
class MetaFoo(type):
|
class MetaFoo(type):
|
||||||
|
@ -231,3 +303,198 @@ def test_static_method_spy(mocker):
|
||||||
assert Foo.bar(arg=10) == 20
|
assert Foo.bar(arg=10) == 20
|
||||||
Foo.bar.assert_called_once_with(arg=10)
|
Foo.bar.assert_called_once_with(arg=10)
|
||||||
spy.assert_called_once_with(arg=10)
|
spy.assert_called_once_with(arg=10)
|
||||||
|
|
||||||
|
|
||||||
|
@skip_pypy
|
||||||
|
@pytest.mark.xfail(sys.version_info[0] == 2, reason='does not work on Python 2')
|
||||||
|
def test_static_method_subclass_spy(mocker):
|
||||||
|
class Base(object):
|
||||||
|
|
||||||
|
@staticmethod
|
||||||
|
def bar(arg):
|
||||||
|
return arg * 2
|
||||||
|
|
||||||
|
class Foo(Base):
|
||||||
|
pass
|
||||||
|
|
||||||
|
spy = mocker.spy(Foo, 'bar')
|
||||||
|
assert Foo.bar(arg=10) == 20
|
||||||
|
Foo.bar.assert_called_once_with(arg=10)
|
||||||
|
spy.assert_called_once_with(arg=10)
|
||||||
|
|
||||||
|
|
||||||
|
@contextmanager
|
||||||
|
def assert_traceback():
|
||||||
|
"""
|
||||||
|
Assert that this file is at the top of the filtered traceback
|
||||||
|
"""
|
||||||
|
try:
|
||||||
|
yield
|
||||||
|
except AssertionError:
|
||||||
|
traceback = py.code.ExceptionInfo().traceback
|
||||||
|
crashentry = traceback.getcrashentry()
|
||||||
|
assert crashentry.path == __file__
|
||||||
|
else:
|
||||||
|
raise AssertionError("DID NOT RAISE")
|
||||||
|
|
||||||
|
|
||||||
|
@contextmanager
|
||||||
|
def assert_argument_introspection(left, right):
|
||||||
|
"""
|
||||||
|
Assert detailed argument introspection is used
|
||||||
|
"""
|
||||||
|
try:
|
||||||
|
yield
|
||||||
|
except AssertionError as e:
|
||||||
|
# this may be a bit too assuming, but seems nicer then hard-coding
|
||||||
|
import _pytest.assertion.util as util
|
||||||
|
# NOTE: we assert with either verbose or not, depending on how our own
|
||||||
|
# test was run by examining sys.argv
|
||||||
|
verbose = any(a.startswith('-v') for a in sys.argv)
|
||||||
|
expected = '\n '.join(util._compare_eq_iterable(left, right, verbose))
|
||||||
|
assert expected in e.msg
|
||||||
|
else:
|
||||||
|
raise AssertionError("DID NOT RAISE")
|
||||||
|
|
||||||
|
|
||||||
|
@pytest.mark.skipif(sys.version_info[:2] in [(3, 3), (3, 4)],
|
||||||
|
reason="assert_not_called not available in python 3.3 and 3.4")
|
||||||
|
def test_assert_not_called_wrapper(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
stub.assert_not_called()
|
||||||
|
stub()
|
||||||
|
with assert_traceback():
|
||||||
|
stub.assert_not_called()
|
||||||
|
|
||||||
|
|
||||||
|
def test_assert_called_with_wrapper(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
stub("foo")
|
||||||
|
stub.assert_called_with("foo")
|
||||||
|
with assert_traceback():
|
||||||
|
stub.assert_called_with("bar")
|
||||||
|
|
||||||
|
|
||||||
|
def test_assert_called_once_with_wrapper(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
stub("foo")
|
||||||
|
stub.assert_called_once_with("foo")
|
||||||
|
stub("foo")
|
||||||
|
with assert_traceback():
|
||||||
|
stub.assert_called_once_with("foo")
|
||||||
|
|
||||||
|
|
||||||
|
def test_assert_called_args_with_introspection(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
|
||||||
|
complex_args = ('a', 1, set(['test']))
|
||||||
|
wrong_args = ('b', 2, set(['jest']))
|
||||||
|
|
||||||
|
stub(*complex_args)
|
||||||
|
stub.assert_called_with(*complex_args)
|
||||||
|
stub.assert_called_once_with(*complex_args)
|
||||||
|
|
||||||
|
with assert_argument_introspection(complex_args, wrong_args):
|
||||||
|
stub.assert_called_with(*wrong_args)
|
||||||
|
stub.assert_called_once_with(*wrong_args)
|
||||||
|
|
||||||
|
|
||||||
|
def test_assert_called_kwargs_with_introspection(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
|
||||||
|
complex_kwargs = dict(foo={'bar': 1, 'baz': 'spam'})
|
||||||
|
wrong_kwargs = dict(foo={'goo': 1, 'baz': 'bran'})
|
||||||
|
|
||||||
|
stub(**complex_kwargs)
|
||||||
|
stub.assert_called_with(**complex_kwargs)
|
||||||
|
stub.assert_called_once_with(**complex_kwargs)
|
||||||
|
|
||||||
|
with assert_argument_introspection(complex_kwargs, wrong_kwargs):
|
||||||
|
stub.assert_called_with(**wrong_kwargs)
|
||||||
|
stub.assert_called_once_with(**wrong_kwargs)
|
||||||
|
|
||||||
|
|
||||||
|
def test_assert_any_call_wrapper(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
stub("foo")
|
||||||
|
stub("foo")
|
||||||
|
stub.assert_any_call("foo")
|
||||||
|
with assert_traceback():
|
||||||
|
stub.assert_any_call("bar")
|
||||||
|
|
||||||
|
|
||||||
|
def test_assert_has_calls(mocker):
|
||||||
|
from pytest_mock import mock_module
|
||||||
|
stub = mocker.stub()
|
||||||
|
stub("foo")
|
||||||
|
stub.assert_has_calls([mock_module.call("foo")])
|
||||||
|
with assert_traceback():
|
||||||
|
stub.assert_has_calls([mock_module.call("bar")])
|
||||||
|
|
||||||
|
|
||||||
|
def test_monkeypatch_ini(mocker, testdir):
|
||||||
|
# Make sure the following function actually tests something
|
||||||
|
stub = mocker.stub()
|
||||||
|
assert stub.assert_called_with.__module__ != stub.__module__
|
||||||
|
|
||||||
|
testdir.makepyfile("""
|
||||||
|
import py.code
|
||||||
|
def test_foo(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
assert stub.assert_called_with.__module__ == stub.__module__
|
||||||
|
""")
|
||||||
|
testdir.makeini("""
|
||||||
|
[pytest]
|
||||||
|
mock_traceback_monkeypatch = false
|
||||||
|
""")
|
||||||
|
if hasattr(testdir, 'runpytest_subprocess'):
|
||||||
|
result = testdir.runpytest_subprocess()
|
||||||
|
else:
|
||||||
|
# pytest 2.7.X
|
||||||
|
result = testdir.runpytest()
|
||||||
|
assert result.ret == 0
|
||||||
|
|
||||||
|
|
||||||
|
def test_parse_ini_boolean(testdir):
|
||||||
|
import pytest_mock
|
||||||
|
assert pytest_mock.parse_ini_boolean('True') is True
|
||||||
|
assert pytest_mock.parse_ini_boolean('false') is False
|
||||||
|
with pytest.raises(ValueError):
|
||||||
|
pytest_mock.parse_ini_boolean('foo')
|
||||||
|
|
||||||
|
|
||||||
|
def test_patched_method_parameter_name(mocker):
|
||||||
|
"""Test that our internal code uses uncommon names when wrapping other
|
||||||
|
"mock" methods to avoid conflicts with user code (#31).
|
||||||
|
"""
|
||||||
|
|
||||||
|
class Request:
|
||||||
|
@classmethod
|
||||||
|
def request(cls, method, args):
|
||||||
|
pass
|
||||||
|
|
||||||
|
m = mocker.patch.object(Request, 'request')
|
||||||
|
Request.request(method='get', args={'type': 'application/json'})
|
||||||
|
m.assert_called_once_with(method='get', args={'type': 'application/json'})
|
||||||
|
|
||||||
|
|
||||||
|
def test_monkeypatch_native(testdir):
|
||||||
|
"""Automatically disable monkeypatching when --tb=native.
|
||||||
|
"""
|
||||||
|
testdir.makepyfile("""
|
||||||
|
def test_foo(mocker):
|
||||||
|
stub = mocker.stub()
|
||||||
|
stub(1, greet='hello')
|
||||||
|
stub.assert_called_once_with(1, greet='hey')
|
||||||
|
""")
|
||||||
|
if hasattr(testdir, 'runpytest_subprocess'):
|
||||||
|
result = testdir.runpytest_subprocess('--tb=native')
|
||||||
|
else:
|
||||||
|
# pytest 2.7.X
|
||||||
|
result = testdir.runpytest('--tb=native')
|
||||||
|
assert result.ret == 1
|
||||||
|
assert 'During handling of the above exception' not in result.stdout.str()
|
||||||
|
assert 'Differing items:' not in result.stdout.str()
|
||||||
|
traceback_lines = [x for x in result.stdout.str().splitlines()
|
||||||
|
if 'Traceback (most recent call last)' in x]
|
||||||
|
assert len(traceback_lines) == 1 # make sure there are no duplicated tracebacks (#44)
|
||||||
|
|
Loading…
Reference in a new issue