Metadata-Version: 2.0
Name: alchemy-mock
Version: 0.3.0
Summary: SQLAlchemy mock helpers.
Home-page: https://github.com/miki725/alchemy-mock
Author: Miroslav Shubernetskiy
Author-email: UNKNOWN
License: MIT
Description-Content-Type: UNKNOWN
Keywords: sqlalchemy mock testing
Platform: UNKNOWN
Classifier: Intended Audience :: Developers
Classifier: Natural Language :: English
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.6
Classifier: Development Status :: 2 - Pre-Alpha
Requires-Dist: six
Requires-Dist: sqlalchemy
Requires-Dist: setuptools

===============
SQLAlchemy Mock
===============

.. image:: https://badge.fury.io/py/alchemy-mock.png
    :target: http://badge.fury.io/py/alchemy-mock

.. image:: https://travis-ci.org/miki725/alchemy-mock.png?branch=master
    :target: https://travis-ci.org/miki725/alchemy-mock

.. image:: https://coveralls.io/repos/miki725/alchemy-mock/badge.png?branch=master
    :target: https://coveralls.io/r/miki725/alchemy-mock?branch=master

SQLAlchemy mock helpers.

* Free software: MIT license
* GitHub: https://github.com/miki725/alchemy-mock

Installing
----------

You can install ``alchemy-mock`` using pip::

    $ pip install alchemy-mock

Why?
----

SQLAlchemy is awesome. Unittests are great.
Accessing DB during tests - not so much.
This library provides easy way to mock SQLAlchemy's session
in unittests while preserving ability to do sane asserts.
Normally SQLAlchemy's expressions cannot be easily compared
as comparison on binary expression produces yet another binary expression::

    >>> type((Model.foo == 5) == (Model.bar == 5))
    <class 'sqlalchemy.sql.elements.BinaryExpression'>

But they can be compared with this library::

    >>> ExpressionMatcher(Model.foo == 5) == (Model.bar == 5)
    False

Using
-----

``ExpressionMatcher`` can be directly used::

    >>> from alchemy_mock.comparison import ExpressionMatcher
    >>> ExpressionMatcher(Model.foo == 5) == (Model.foo == 5)
    True

Alternatively ``AlchemyMagicMock`` can be used to mock out SQLAlchemy session::

    >>> from alchemy_mock.mocking import AlchemyMagicMock
    >>> session = AlchemyMagicMock()
    >>> session.query(Model).filter(Model.foo == 5).all()

    >>> session.query.return_value.filter.assert_called_once_with(Model.foo == 5)

In real world though session can be interacted with multiple times to query some data.
In those cases ``UnifiedAlchemyMagicMock`` can be used which combines various calls for easier assertions::

    >>> from alchemy_mock.mocking import UnifiedAlchemyMagicMock
    >>> session = UnifiedAlchemyMagicMock()

    >>> m = session.query(Model)
    >>> q = m.filter(Model.foo == 5)
    >>> if condition:
    ...     q = q.filter(Model.bar > 10).all()
    >>> data1 = q.all()
    >>> data2 = m.filter(Model.note == 'hello world').all()

    >>> session.filter.assert_has_calls([
    ...     mock.call(Model.foo == 5, Model.bar > 10),
    ...     mock.call(Model.note == 'hello world'),
    ... ])

Also real-data can be stubbed by criteria::

    >>> from alchemy_mock.mocking import UnifiedAlchemyMagicMock
    >>> session = UnifiedAlchemyMagicMock(data=[
    ...     (
    ...         [mock.call.query(Model),
    ...          mock.call.filter(Model.foo == 5, Model.bar > 10)],
    ...         [Model(foo=5, bar=11)]
    ...     ),
    ...     (
    ...         [mock.call.query(Model),
    ...          mock.call.filter(Model.note == 'hello world')],
    ...         [Model(note='hello world')]
    ...     ),
    ...     (
    ...         [mock.call.query(AnotherModel),
    ...          mock.call.filter(Model.foo == 5, Model.bar > 10)],
    ...         [AnotherModel(foo=5, bar=17)]
    ...     ),
    ... ])
    >>> session.query(Model).filter(Model.foo == 5).filter(Model.bar > 10).all()
    [Model(foo=5, bar=11)]
    >>> session.query(Model).filter(Model.note == 'hello world').all()
    [Model(note='hello world')]
    >>> session.query(AnotherModel).filter(Model.foo == 5).filter(Model.bar > 10).all()
    [AnotherModel(foo=5, bar=17)]
    >>> session.query(AnotherModel).filter(Model.note == 'hello world').all()
    []




History
-------

0.3.0 (2018-01-24)

* Added support for ``.one()`` and ``.first()`` methods when stubbing data.
* Fixed bug which incorrectly unified methods after iterating on mock.

0.2.0 (2018-01-13)
~~~~~~~~~~~~~~~~~~

* Added ability to stub real-data by filtering criteria.
  See `#2 <https://github.com/miki725/alchemy-mock/pull/2>`_.

0.1.1 (2018-01-12)
~~~~~~~~~~~~~~~~~~

* Fixed alembic typo in README. oops.

0.1.0 (2018-01-12)
~~~~~~~~~~~~~~~~~~

* First release on PyPI.


Credits
-------

Development Lead
~~~~~~~~~~~~~~~~

* Miroslav Shubernetskiy  - https://github.com/miki725

Contributors
~~~~~~~~~~~~

None yet. Why not be the first?


License
-------

The MIT License (MIT)

Copyright (c) 2018, Miroslav Shubernetskiy

::

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in
    all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    THE SOFTWARE.


