Improved test coverage and error messages for conf.urls.__init__.

django/conf/urls/__init__.py

@@ -22,12 +22,13 @@ def include(arg, namespace=None):
         except ValueError:
             if namespace:
                 raise ImproperlyConfigured(
-                    'Cannot override the namespace for a dynamic module that provides a namespace'
+                    'Cannot override the namespace for a dynamic module that '
+                    'provides a namespace.'
                 )
             raise ImproperlyConfigured(
-                'Passing a 3-tuple to django.conf.urls.include() is not supported. '
+                'Passing a %d-tuple to django.conf.urls.include() is not supported. '
                 'Pass a 2-tuple containing the list of patterns and app_name, '
-                'and provide the namespace argument to include() instead.',
+                'and provide the namespace argument to include() instead.' % len(arg)
             )
     else:
         # No namespace hint - use manually provided namespace

tests/urlpatterns_reverse/tests.py

@@ -1058,11 +1058,21 @@ class IncludeTests(SimpleTestCase):
         with self.assertRaisesMessage(ImproperlyConfigured, msg):
             include(self.url_patterns, 'namespace')
 
+    def test_include_4_tuple(self):
+        msg = 'Passing a 4-tuple to django.conf.urls.include() is not supported.'
+        with self.assertRaisesMessage(ImproperlyConfigured, msg):
+            include((self.url_patterns, 'app_name', 'namespace', 'blah'))
+
     def test_include_3_tuple(self):
         msg = 'Passing a 3-tuple to django.conf.urls.include() is not supported.'
         with self.assertRaisesMessage(ImproperlyConfigured, msg):
             include((self.url_patterns, 'app_name', 'namespace'))
 
+    def test_include_3_tuple_namespace(self):
+        msg = 'Cannot override the namespace for a dynamic module that provides a namespace.'
+        with self.assertRaisesMessage(ImproperlyConfigured, msg):
+            include((self.url_patterns, 'app_name', 'namespace'), 'namespace')
+
     def test_include_2_tuple(self):
         self.assertEqual(
             include((self.url_patterns, 'app_name')),