pytest-flake8 0.3

py.test plugin for efficiently checking PEP8 compliance
=======================================================

Usage
-----

Install by running the command::

pip install pytest-flake8

After installing it, when you run tests with the option::

py.test --flake8

every file ending in ``.py`` will be discovered and checked with
flake8.

.. note::

If optional flake8 plugins are installed, those will
be used automatically. No provisions have been made for
configuring these via py.test.

.. warning::

Running flake8 tests on your project is likely to cause a number
of issues. The plugin allows one to configure on a per-project and
per-file basis which errors or warnings to ignore, see
flake8-ignore_.

.. _flake8-ignore:

Configuring FLAKE8 options per project and file
-----------------------------------------------

Maximum line length can be configured for the whole project
by adding a ``flake8-max-line-length`` option to your ``setup.cfg``
or ``tox.ini`` file like this::

# content of setup.cfg
[pytest]
flake8-max-line-length = 99

Note that the default will be what naturally comes with flake8_
(which it turn gets its default from pep8_).

You may configure flake8-checking options for your project
by adding an ``flake8-ignore`` entry to your ``setup.cfg``
or ``tox.ini`` file like this::

# content of setup.cfg
[pytest]
flake8-ignore = E201 E231

This would globally prevent complaints about two whitespace issues.
Rerunning with the above example will now look better::

$ py.test -q --flake8
collecting ... collected 1 items
.
1 passed in 0.01 seconds

If you have some files where you want to specifically ignore
some errors or warnings you can start a flake8-ignore line with
a glob-pattern and a space-separated list of codes::

# content of setup.cfg
[pytest]
flake8-ignore =
*.py E201
doc/conf.py ALL

So if you have a conf.py like this::

# content of doc/conf.py

func ( [1,2,3]) #this line lots pep8 errors :)

then running again with the previous example will show a single
failure and it will ignore doc/conf.py alltogether::

$ py.test --flake8 -v # verbose shows what is ignored
======================================= test session starts ========================================
platform darwin -- Python 2.7.6 -- py-1.4.26 -- pytest-2.7.0 -- /Users/tholo/Source/pytest/bin/python
cachedir: /Users/tholo/Source/pytest/src/verify/.cache
rootdir: /Users/tholo/Source/angular/src/verify, inifile: setup.cfg
plugins: flake8, cache
collected 1 items

myfile.py PASSED

========================================= 1 passed in 0.00 seconds =========================================

Note that doc/conf.py was not considered or imported.

Notes
-----

The repository of this plugin is at https://github.com/tholo/pytest-flake8

For more info on py.test see http://pytest.org

The code is partially based on Ronny Pfannschmidt's pytest-codecheckers plugin.