The ``py.test`` testing tool makes it easy to write small tests, yet scales to support complex functional testing. It provides - `auto-discovery <http://pytest.org/latest/goodpractises.html#python-test-discovery>`_ of test modules and functions, - detailed info on failing `assert statements <http://pytest.org/latest/assert.html>`_ (no need to remember ``self.assert*`` names) - `modular fixtures <http://pytest.org/latest/fixture.html>`_ for managing small or parametrized long-lived test resources. - multi-paradigm support: you can use ``py.test`` to run test suites based on `unittest <http://pytest.org/latest/unittest.html>`_ (or trial), `nose <http://pytest.org/latest/nose.html>`_ - single-source compatibility to Python2.4 all the way up to Python3.3, PyPy-1.9 and Jython-2.5.1. - many `external plugins <http://pytest.org/latest/plugins.html#installing-external-plugins-searching>`_. .. image:: https://secure.travis-ci.org/hpk42/pytest.png :target: http://travis-ci.org/hpk42/pytest A simple example for a test:: # content of test_module.py def test_function(): i = 4 assert i == 3 which can be run with ``py.test test_module.py``. See `getting-started <http://pytest.org/latest/getting-started.html#our-first-test-run>`_ for more examples. For much more info, including PDF docs, see http://pytest.org and report bugs at: http://bitbucket.org/hpk42/pytest/issues/ and checkout repos at: http://github.com/hpk42/pytest/ (mirror) http://bitbucket.org/hpk42/pytest/ Copyright Holger Krekel and others, 2004-2013 Licensed under the MIT license.