if view argument is not passed to config.add_notfound_view, use default_exceptionresponse_view

2 files changed, 22 insertions, 0 deletions

diff --git a/pyramid/config/views.py b/pyramid/config/views.py
index 5ca696069..fbe7fc712 100644
--- a/pyramid/config/views.py
+++ b/pyramid/config/views.py
@@ -53,6 +53,7 @@ from pyramid.exceptions import (
 from pyramid.httpexceptions import (
     HTTPForbidden,
     HTTPNotFound,
+    default_exceptionresponse_view,
     )
 
 from pyramid.registry import (
@@ -1671,6 +1672,9 @@ class ViewsConfiguratorMixin(object):
 
             config.add_notfound_view(notfound)
 
+        If ``view`` argument is not provided, the view callable defaults to
+        :func:`~pyramid.httpexceptions.default_exceptionresponse_view`.
+
         All arguments except ``append_slash`` have the same meaning as
         :meth:`pyramid.config.Configurator.add_view` and each predicate
         argument restricts the set of circumstances under which this notfound
@@ -1697,6 +1701,9 @@ class ViewsConfiguratorMixin(object):
                     % arg
                     )
 
+        if not view:
+            view = default_exceptionresponse_view
+
         settings = dict(
             view=view,
             context=HTTPNotFound,
diff --git a/pyramid/tests/test_config/test_views.py b/pyramid/tests/test_config/test_views.py
index a0d9ee0c3..0fb7c734a 100644
--- a/pyramid/tests/test_config/test_views.py
+++ b/pyramid/tests/test_config/test_views.py
@@ -1860,6 +1860,21 @@ class TestViewsConfigurationMixin(unittest.TestCase):
         result = view(None, request)
         self.assertEqual(result, (None, request))
 
+    def test_add_notfound_view_no_view_argument(self):
+        from zope.interface import implementedBy
+        from pyramid.interfaces import IRequest
+        from pyramid.httpexceptions import HTTPNotFound
+        config = self._makeOne(autocommit=True)
+        config.setup_registry()
+        config.add_notfound_view()
+        request = self._makeRequest(config)
+        view = self._getViewCallable(config,
+                                     ctx_iface=implementedBy(HTTPNotFound),
+                                     request_iface=IRequest)
+        context = HTTPNotFound()
+        result = view(context, request)
+        self.assertEqual(result, context)
+
     def test_add_notfound_view_allows_other_predicates(self):
         from pyramid.renderers import null_renderer
         config = self._makeOne(autocommit=True)