Support for SimpleTestCase.assertTemplateUsed etc

[blueyed]

I wonder if there is currently a way to use e.g. methods like assertTemplateUsed from Django's SimpleTestCase with pytest-django directly.

I know that I could use a standard SimpleTestCase, but maybe I am just missing something.
What would be the approach to get things like this into pytest-django, if this would be desired?

[rafales]

There's an easy way to achieve that:

def pytest_namespace():
    """Make unittest assert methods available.
    This is useful for things such floating point checks with assertAlmostEqual.
    """

    import unittest

    class Dummy(unittest.TestCase):
        def dummy(self):
            pass
    obj = Dummy('dummy')

    names = {name: member
             for name, member in inspect.getmembers(obj)
             if name.startswith('assert') and '_' not in name}

    return names

Just replace unittest.TestCase with SimpleTestCase.

This makes all methods from TestCase available on the pytest namespace (you can do pytest.assertAlmostEqual(), pytest.assertTemplateUsed() etc).

[blueyed]

@rafales
Thanks! That works great (except for another layer of confusion for code completion.. ;)

This should get added to http://pytest-django.readthedocs.org/en/latest/helpers.html.

[pelme]

Hmm, I think this should be namespaced somehow, like

pytest.django.assertTemplateUsed or something like that.

Also, generic helpers such as assertAlmostEqual might be nice to have, but it is not really the job of pytest-django to provide them.

[pelme]

Some more ideas: it should be possible to introspect SimpleTestCase and only add the assertion methods that are defined exactly at SimpleTestCase and not in its super classes.

[bittner]

I've tried to make PR #144 work opening the new PR #232, where I also merged in the current master to resolve merge conflicts in the PR.

Currently, the code doesn't seem to provide the assertXxx boilerplate functions via simple assert statements (see what Travis-CI reports). Can you guys help me understand what needs to be changed? -- How is this done in py.test? (I've not yet understood how the assert magic is done.)

I'm wondering whether the code in the original PR ever worked. GitHub reports it did (via Travis-CI integration), but the related test runs don't exist on Travis-CI. 😟

[blueyed]

@bittner
The last build of #144 is: https://travis-ci.org/pytest-dev/pytest-django/builds/31046637 (you need to fix the URL, the repo has been renamed).

[blueyed]

Closing this in favor of #232 (which is a continuation of this one).