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============
Adding Tests
============
We will now add tests for the models and the views and a few functional
tests in ``tests.py``. Tests ensure that an application works, and
that it continues to work when changes are made in the future.
Testing the Models
==================
To test the model class ``Page`` we'll add a new ``PageModelTests``
class to our ``tests.py`` file that was generated as part of the
``alchemy`` scaffold.
Testing the Views
=================
We'll modify our ``tests.py`` file, adding tests for each view
function we added previously. As a result, we'll *delete* the
``ViewTests`` class that the ``alchemy`` scaffold provided, and add
four other test classes: ``ViewWikiTests``, ``ViewPageTests``,
``AddPageTests``, and ``EditPageTests``. These test the
``view_wiki``, ``view_page``, ``add_page``, and ``edit_page`` views.
Functional tests
================
We'll test the whole application, covering security aspects that are not
tested in the unit tests, like logging in, logging out, checking that
the ``viewer`` user cannot add or edit pages, but the ``editor`` user
can, and so on.
Viewing the results of all our edits to ``tests.py``
====================================================
Open the ``tutorial/tests.py`` module, and edit it such that it appears as
follows:
.. literalinclude:: src/tests/tutorial/tests.py
:linenos:
:language: python
Running the Tests
=================
We can run these tests by using ``setup.py test`` in the same way we did in
:ref:`running_tests`. However, first we must edit our ``setup.py`` to
include a dependency on WebTest, which we've used in our ``tests.py``.
Change the ``requires`` list in ``setup.py`` to include ``WebTest``.
.. literalinclude:: src/tests/setup.py
:linenos:
:language: python
:lines: 11-22
:emphasize-lines: 11
After we've added a dependency on WebTest in ``setup.py``, we need to rerun
``setup.py develop`` to get WebTest installed into our virtualenv. Assuming
our shell's current working directory is the "tutorial" distribution
directory:
On UNIX:
.. code-block:: text
$ $VENV/bin/python setup.py develop
On Windows:
.. code-block:: text
c:\pyramidtut\tutorial> %VENV%\Scripts\python setup.py develop
Once that command has completed successfully, we can run the tests
themselves:
On UNIX:
.. code-block:: text
$ $VENV/bin/python setup.py test -q
On Windows:
.. code-block:: text
c:\pyramidtut\tutorial> %VENV%\Scripts\python setup.py test -q
The expected result ends something like:
.. code-block:: text
......................
----------------------------------------------------------------------
Ran 21 tests in 2.700s
OK
|
