Refs #20456 -- Added test for initialization of request/args/kwargs attributes in View.Setup().

tests/generic_views/test_base.py

@@ -259,6 +259,17 @@ class ViewTest(SimpleTestCase):
         with self.assertRaisesMessage(AttributeError, msg):
             TestView.as_view()(self.rf.get('/'))
 
+    def test_setup_adds_args_kwargs_request(self):
+        request = self.rf.get('/')
+        args = ('arg 1', 'arg 2')
+        kwargs = {'kwarg_1': 1, 'kwarg_2': 'year'}
+
+        view = View()
+        view.setup(request, *args, **kwargs)
+        self.assertEqual(request, view.request)
+        self.assertEqual(args, view.args)
+        self.assertEqual(kwargs, view.kwargs)
+
     def test_direct_instantiation(self):
         """
         It should be possible to use the view by directly instantiating it