139 lines
4.1 KiB
ReStructuredText
139 lines
4.1 KiB
ReStructuredText
.. _`external plugins`:
|
|
.. _`extplugins`:
|
|
.. _`using plugins`:
|
|
|
|
How to install and use plugins
|
|
===============================
|
|
|
|
This section talks about installing and using third party plugins.
|
|
For writing your own plugins, please refer to :ref:`writing-plugins`.
|
|
|
|
Installing a third party plugin can be easily done with ``pip``:
|
|
|
|
.. code-block:: bash
|
|
|
|
pip install pytest-NAME
|
|
pip uninstall pytest-NAME
|
|
|
|
If a plugin is installed, ``pytest`` automatically finds and integrates it,
|
|
there is no need to activate it.
|
|
|
|
Here is a little annotated list for some popular plugins:
|
|
|
|
.. _`django`: https://www.djangoproject.com/
|
|
|
|
* `pytest-django <https://pypi.org/project/pytest-django/>`_: write tests
|
|
for `django`_ apps, using pytest integration.
|
|
|
|
* `pytest-twisted <https://pypi.org/project/pytest-twisted/>`_: write tests
|
|
for `twisted <https://twistedmatrix.com/>`_ apps, starting a reactor and
|
|
processing deferreds from test functions.
|
|
|
|
* `pytest-cov <https://pypi.org/project/pytest-cov/>`__:
|
|
coverage reporting, compatible with distributed testing
|
|
|
|
* `pytest-xdist <https://pypi.org/project/pytest-xdist/>`_:
|
|
to distribute tests to CPUs and remote hosts, to run in boxed
|
|
mode which allows to survive segmentation faults, to run in
|
|
looponfailing mode, automatically re-running failing tests
|
|
on file changes.
|
|
|
|
* `pytest-instafail <https://pypi.org/project/pytest-instafail/>`_:
|
|
to report failures while the test run is happening.
|
|
|
|
* `pytest-bdd <https://pypi.org/project/pytest-bdd/>`_:
|
|
to write tests using behaviour-driven testing.
|
|
|
|
* `pytest-timeout <https://pypi.org/project/pytest-timeout/>`_:
|
|
to timeout tests based on function marks or global definitions.
|
|
|
|
* `pytest-pep8 <https://pypi.org/project/pytest-pep8/>`_:
|
|
a ``--pep8`` option to enable PEP8 compliance checking.
|
|
|
|
* `pytest-flakes <https://pypi.org/project/pytest-flakes/>`_:
|
|
check source code with pyflakes.
|
|
|
|
* `oejskit <https://pypi.org/project/oejskit/>`_:
|
|
a plugin to run javascript unittests in live browsers.
|
|
|
|
To see a complete list of all plugins with their latest testing
|
|
status against different pytest and Python versions, please visit
|
|
:ref:`plugin-list`.
|
|
|
|
You may also discover more plugins through a `pytest- pypi.org search`_.
|
|
|
|
.. _`pytest- pypi.org search`: https://pypi.org/search/?q=pytest-
|
|
|
|
|
|
.. _`available installable plugins`:
|
|
|
|
Requiring/Loading plugins in a test module or conftest file
|
|
-----------------------------------------------------------
|
|
|
|
You can require plugins in a test module or a conftest file using :globalvar:`pytest_plugins`:
|
|
|
|
.. code-block:: python
|
|
|
|
pytest_plugins = ("myapp.testsupport.myplugin",)
|
|
|
|
When the test module or conftest plugin is loaded the specified plugins
|
|
will be loaded as well.
|
|
|
|
.. note::
|
|
|
|
Requiring plugins using a ``pytest_plugins`` variable in non-root
|
|
``conftest.py`` files is deprecated. See
|
|
:ref:`full explanation <requiring plugins in non-root conftests>`
|
|
in the Writing plugins section.
|
|
|
|
.. note::
|
|
The name ``pytest_plugins`` is reserved and should not be used as a
|
|
name for a custom plugin module.
|
|
|
|
|
|
.. _`findpluginname`:
|
|
|
|
Finding out which plugins are active
|
|
------------------------------------
|
|
|
|
If you want to find out which plugins are active in your
|
|
environment you can type:
|
|
|
|
.. code-block:: bash
|
|
|
|
pytest --trace-config
|
|
|
|
and will get an extended test header which shows activated plugins
|
|
and their names. It will also print local plugins aka
|
|
:ref:`conftest.py <conftest.py plugins>` files when they are loaded.
|
|
|
|
.. _`cmdunregister`:
|
|
|
|
Deactivating / unregistering a plugin by name
|
|
---------------------------------------------
|
|
|
|
You can prevent plugins from loading or unregister them:
|
|
|
|
.. code-block:: bash
|
|
|
|
pytest -p no:NAME
|
|
|
|
This means that any subsequent try to activate/load the named
|
|
plugin will not work.
|
|
|
|
If you want to unconditionally disable a plugin for a project, you can add
|
|
this option to your ``pytest.ini`` file:
|
|
|
|
.. code-block:: ini
|
|
|
|
[pytest]
|
|
addopts = -p no:NAME
|
|
|
|
Alternatively to disable it only in certain environments (for example in a
|
|
CI server), you can set ``PYTEST_ADDOPTS`` environment variable to
|
|
``-p no:name``.
|
|
|
|
See :ref:`findpluginname` for how to obtain the name of a plugin.
|
|
|
|
.. _`builtin plugins`:
|