Test configuration
========================

using / specifying plugins
-------------------------------

you can instruct py.test to use additional plugins by:

* setting the PYTEST_PLUGINS environment variable
  to a comma-separated list of plugins
* XXX supplying "--plugins=NAME1,NAME2,..." at the command line 
* setting "pytest_plugins='name1', 'name2'" in 
  ``conftest.py`` files or in python test modules. 

py.test will load all plugins along with their dependencies
(plugins may specify "pytest_plugins" as well). 

test option values 
-----------------------------

py.test will lookup the value of an option "NAME" in this order: 

* option value supplied at command line 
* content of environment variable ``PYTEST_OPTION_NAME=...``
* ``name = ...`` setting in the nearest ``conftest.py`` file.

This means that you can specify default options per-run, 
per shell session or per project directory.