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.. image:: https://img.shields.io/pypi/v/pytest-diff.svg :target: https://pypi.org/project/pytest-diff :alt: PyPI version
.. image:: https://img.shields.io/pypi/pyversions/pytest-diff.svg :target: https://pypi.org/project/pytest-diff :alt: Python versions
.. image:: https://travis-ci.org/username/pytest-diff.svg?branch=master :target: https://travis-ci.org/username/pytest-diff :alt: See Build Status on Travis CI
.. image:: https://ci.appveyor.com/api/projects/status/github/username/pytest-diff?branch=master :target: https://ci.appveyor.com/project/username/pytest-diff/branch/master :alt: See Build Status on AppVeyor
A simple plugin to use with pytest
This pytest
_ plugin was generated with Cookiecutter
_ along with @hackebrot
's cookiecutter-pytest-plugin
template.
pytest
deepdiff
pprintpp
You can install "pytest-diff" via pip
_ from PyPI
_::
$ pip install pytest-diff
.. code-block:: python
class Person:
def __init__(self, name, age, favorites):
self.name = name
self.age = age
self.favorites = favorites
def test_person():
a = Person("Alice", age=21, favorites={"food": "spam", "movie": "Life of Brian"})
b = Person("Alice", age=21, favorites={"food": "eggs", "movie": "Life of Brian"})
assert a == b
Running :code:pytest
gives:
.. code-block:: python
______________________________ test_person ______________________________
def test_person():
a = Person("Alice", age=21, favorites={'food': 'spam', 'movie': 'Life of Brian'})
b = Person("Alice", age=21, favorites={'food': 'eggs', 'movie': 'Life of Brian'})
> assert a == b
E assert
E <test_person.Person object at 0x7fa326d769e8>
E ==
E <test_person.Person object at 0x7fa326d76be0>
E {'values_changed': {"root.favorites['food']": {'new_value': 'spam', 'old_value': 'eggs'}}}
examples/test_person.py:11: AssertionError
To customize diffs for a specific type, register it with the registry:
.. code-block:: python
import pytest_diff
class Car:
def __init__(self, make, model, year):
self.make = make
self.model = model
self.year = year
@pytest_diff.registry.register(Car)
def diff(x, y):
return [
f"{x.make} vs {y.make}",
f"{x.model} vs {y.model}",
f"{x.year} vs {y.year}",
]
def test_car():
c1 = Car("Toyota", "Prius", 2010)
c2 = Car("Honda", "Accord", 2009)
assert c1 == c2
Then running :code:pytest
shows your custom diff:
.. code-block:: python
def test_car():
c1 = Car("Toyota", "Prius", 2010)
c2 = Car("Honda", "Accord", 2009)
> assert c1 == c2
E assert
E <test_custom.Car object at 0x7f0e9b0ccd68>
E ==
E <test_custom.Car object at 0x7f0e9b0cceb8>
E Toyota vs Honda
E Prius vs Accord
E 2010 vs 2009
examples/test_custom.py:21: AssertionError
Contributions are very welcome. Tests can be run with tox
_, please ensure
the coverage at least stays the same before you submit a pull request.
Distributed under the terms of the MIT
_ license, "pytest-diff" is free and open source software
If you encounter any problems, please file an issue
_ along with a detailed description.
.. _Cookiecutter
: https://github.com/audreyr/cookiecutter
.. _@hackebrot
: https://github.com/hackebrot
.. _MIT
: http://opensource.org/licenses/MIT
.. _BSD-3
: http://opensource.org/licenses/BSD-3-Clause
.. _GNU GPL v3.0
: http://www.gnu.org/licenses/gpl-3.0.txt
.. _Apache Software License 2.0
: http://www.apache.org/licenses/LICENSE-2.0
.. _cookiecutter-pytest-plugin
: https://github.com/pytest-dev/cookiecutter-pytest-plugin
.. _file an issue
: https://github.com/username/pytest-diff/issues
.. _pytest
: https://github.com/pytest-dev/pytest
.. _tox
: https://tox.readthedocs.io/en/latest/
.. _pip
: https://pypi.org/project/pip/
.. _PyPI
: https://pypi.org/project
FAQs
A simple plugin to use with pytest
We found that pytest-diff demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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