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============
Adding Tests
============
We will now add tests for the models and the views and a few functional
tests in the ``tests.py``. Tests ensure that an application works, and
that it continues to work after some changes are made in the future.
Test the Models
===============
We write tests for the model classes and the appmaker. Changing
``tests.py``, we'll write a separate test class for each model class, and
we'll write a test class for the ``appmaker``.
To do so, we'll retain the ``tutorial.tests.ViewTests`` class that was
generated as part of the ``zodb`` scaffold. We'll add three test
classes: one for the ``Page`` model named ``PageModelTests``, one for the
``Wiki`` model named ``WikiModelTests``, and one for the appmaker named
``AppmakerTests``.
Test the Views
==============
We'll modify our ``tests.py`` file, adding tests for each view function we
added above. As a result, we'll *delete* the ``ViewTests`` test in the file,
and add four other test classes: ``ViewWikiTests``, ``ViewPageTests``,
``AddPageTests``, and ``EditPageTests``. These test the ``view_wiki``,
``view_page``, ``add_page``, and ``edit_page`` views respectively.
Functional tests
================
We 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.
View the results of all our edits to ``tests.py``
=================================================
Once we're done with the ``tests.py`` module, it will look a lot like the
below:
.. 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: 11-21
:emphasize-lines: 10
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
$ ../bin/python setup.py develop
On Windows:
.. code-block:: text
c:\pyramidtut\tutorial> ..\Scripts\python setup.py develop
Once that command has completed successfully, we can run the tests
themselves:
On UNIX:
.. code-block:: text
$ ../bin/python setup.py test -q
On Windows:
.. code-block:: text
c:\pyramidtut\tutorial> ..\Scripts\python setup.py test -q
The expected result looks something like:
.. code-block:: text
.........
----------------------------------------------------------------------
Ran 23 tests in 1.653s
OK
|
