UrlResolver doesn't check all possibilities

[Adrien mille]

The UrlResolver doesn't check possibilities through multiple namespaces ; It'll look out for the viewname in a namespace to test all possibilities. But the resolver won't go backward to other namespaces to list additional possibilities that might match. I've few difficulties to define that issue so I join this test case to reproduce it.

from django.test import TestCase
from django.conf.urls import url, include
from django.shortcuts import reverse


def my_view(**kwargs):
    pass


class UrlConf(object):
    app_name = 'myapp'

    # those are url patterns and views that I can re-used multiple times
    common_url_patterns = [
        # this is a page like any others
        url(r'^$', my_view, name='page'),
        # here is a namespace to let's say group actions together
        # I clearly set a namespace to make it more logical
        url(r'^actions/', include(([
            url(r'^action/$', my_view, name='action')
        ], app_name), namespace='actions'))
    ]

    urlpatterns = [
        # this is a part of my app into a namespace, nothing special about it
        url(r'^root/', include(([
            # depending of what are my keyword arguments
            # I will use one of these two followings possibilities
            url(r'^without-context/', include(common_url_patterns), kwargs={'additional_arg': -21}),
            url(r'^with-context/(?P<var>[0-9]+)/', include(common_url_patterns)),
            # you may ask why I'm not using nested optional argument
            # this is because I explicitly defined kwargs arguments for my view in one cases
            # but not in the other, so I cannot solve it that way
        ], app_name)))
    ]



class TestUrlResolver(TestCase):
    def _test_reverse_for(self, viewname, kwargs, expected):
        uri = reverse(viewname, kwargs=kwargs, urlconf=UrlConf)
        self.assertEqual(uri, expected)

    def test_page_without_var(self):
        self._test_reverse_for('myapp:page', None, '/root/without-context/')

    def test_page_with_var(self):
        self._test_reverse_for('myapp:page', {'var': 42}, '/root/with-context/42/')

    def test_action_without_var(self):
        self._test_reverse_for('myapp:actions:action', None, '/root/without-context/actions/action/')

    def test_action_with_var(self):
        self._test_reverse_for('myapp:actions:action', {'var': 42}, '/root/with-context/42/actions/action/')

[Tim Graham]

Could you update your example so that it doesn't raise a deprecation warning? I see this:

RemovedInDjango20Warning: Specifying a namespace in django.conf.urls.include() without providing an app_name is deprecated. Set the app_name attribute in the included module, or pass a 2-tuple containing the list of patterns and app_name instead.
  ], namespace='root'))