f3c9c6e8a8
Now each in-process pytest run saves a snapshot of important global Python state and restores it after the test completes, including the list of loaded modules & the Python path settings. Previously only the loaded package data was getting restored, but that was also reverting any loaded package changes done in the test triggering the pytest runs, and not only those done by the pytest runs themselves. Updated acceptance tests broken by this change, which were only passing before by accident as they were making multiple pytest runs with later ones depending on sys.path changes left behind by the initial one.
.. image:: http://docs.pytest.org/en/latest/_static/pytest1.png
:target: http://docs.pytest.org
:align: center
:alt: pytest
------
.. image:: https://img.shields.io/pypi/v/pytest.svg
:target: https://pypi.python.org/pypi/pytest
.. image:: https://anaconda.org/conda-forge/pytest/badges/version.svg
:target: https://anaconda.org/conda-forge/pytest
.. image:: https://img.shields.io/pypi/pyversions/pytest.svg
:target: https://pypi.python.org/pypi/pytest
.. image:: https://img.shields.io/coveralls/pytest-dev/pytest/master.svg
:target: https://coveralls.io/r/pytest-dev/pytest
.. image:: https://travis-ci.org/pytest-dev/pytest.svg?branch=master
:target: https://travis-ci.org/pytest-dev/pytest
.. image:: https://ci.appveyor.com/api/projects/status/mrgbjaua7t33pg6b?svg=true
:target: https://ci.appveyor.com/project/pytestbot/pytest
The ``pytest`` framework makes it easy to write small tests, yet
scales to support complex functional testing for applications and libraries.
An example of a simple test:
.. code-block:: python
# content of test_sample.py
def inc(x):
return x + 1
def test_answer():
assert inc(3) == 5
To execute it::
$ pytest
============================= test session starts =============================
collected 1 items
test_sample.py F
================================== FAILURES ===================================
_________________________________ test_answer _________________________________
def test_answer():
> assert inc(3) == 5
E assert 4 == 5
E + where 4 = inc(3)
test_sample.py:5: AssertionError
========================== 1 failed in 0.04 seconds ===========================
Due to ``pytest``'s detailed assertion introspection, only plain ``assert`` statements are used. See `getting-started <http://docs.pytest.org/en/latest/getting-started.html#our-first-test-run>`_ for more examples.
Features
--------
- Detailed info on failing `assert statements <http://docs.pytest.org/en/latest/assert.html>`_ (no need to remember ``self.assert*`` names);
- `Auto-discovery
<http://docs.pytest.org/en/latest/goodpractices.html#python-test-discovery>`_
of test modules and functions;
- `Modular fixtures <http://docs.pytest.org/en/latest/fixture.html>`_ for
managing small or parametrized long-lived test resources;
- Can run `unittest <http://docs.pytest.org/en/latest/unittest.html>`_ (or trial),
`nose <http://docs.pytest.org/en/latest/nose.html>`_ test suites out of the box;
- Python 2.7, Python 3.4+, PyPy 2.3, Jython 2.5 (untested);
- Rich plugin architecture, with over 315+ `external plugins <http://plugincompat.herokuapp.com>`_ and thriving community;
Documentation
-------------
For full documentation, including installation, tutorials and PDF documents, please see http://docs.pytest.org.
Bugs/Requests
-------------
Please use the `GitHub issue tracker <https://github.com/pytest-dev/pytest/issues>`_ to submit bugs or request features.
Changelog
---------
Consult the `Changelog <http://docs.pytest.org/en/latest/changelog.html>`__ page for fixes and enhancements of each version.
License
-------
Copyright Holger Krekel and others, 2004-2017.
Distributed under the terms of the `MIT`_ license, pytest is free and open source software.
.. _`MIT`: https://github.com/pytest-dev/pytest/blob/master/LICENSE