Django: test TemplateView based views triggered by url pattern?

Say I have the following url

path('clients/by_<str:order>', BrowseClients.as_view(), name='browse_clients')

and its corresponding view

@method_decorator(login_required, name='dispatch')
class BrowseClients(TemplateView):

    template_name = "console/browse_clients.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['clients'] = Client.objects.filter(
            owner=self.request.user.id).order_by(self.kwargs["order"])
        context['form'] = AddClientForm()
        return context

How can I test what is in the context?

class TestBrowseClientsView(TestCase, GeneralViewTest):
    fixtures = ['users.yaml', 'clients.yaml']

    def setUp(self):
        self.request = RequestFactory().get('/console/clients/by_inscription')
        self.request.user = User.objects.get(pk=1)

    def test_return_client_ordered_by_inscription_date(self): 
        view = BrowseClients()
        view.setup(self.request)
        context = view.get_context_data()

Naively, I thought that view.setup(self.request) would "feed" .get_context_data() with the relevant kwargs based on the pattern found in self.request. But it does not seem to be the case.

======================================================================
ERROR: test_return_client_ordered_by_inscription_date (console.tests.TestBrowseClientsView)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/src/jengu/console/tests.py", line 164, in test_return_client_ordered_by_inscription_date
    context = view.get_context_data()
  File "/usr/src/jengu/console/views.py", line 34, in get_context_data
    owner=self.request.user.id).order_by(self.kwargs["order"])
KeyError: 'order'

----------------------------------------------------------------------

Why is that the case? I managed to fix my problem by passing status and order explicitly but it looks a bit ad hoc:

def get_context_data(self, status, order, **kwargs):

    def test_return_clients_ordered_by_parameter(self): 
        view = BrowseClients()
        view.setup(self.request)
        context = view.get_context_data("all", "inscription")

Among the different options mentioned here, which one is the more canonical? Am I taking a wrong path, explicitly using variables when defining get_context_data()?