Fixed code to solve #23070 problem

Added a class to wrap callable in settings:
* Not to call in the debug page (#21345).
* Not to break the debug page if the callable forbidding to set attributes (#23070).

Thanks @bmispelon for giving me some advice.

1 files changed, 16 insertions, 1 deletions

diff --git a/tests/view_tests/tests/test_debug.py b/tests/view_tests/tests/test_debug.py
index b41ce8b75c..3d51da9f94 100644
--- a/tests/view_tests/tests/test_debug.py
+++ b/tests/view_tests/tests/test_debug.py
@@ -20,7 +20,7 @@ from django.test import TestCase, RequestFactory, override_settings
 from django.test.utils import override_with_test_loader
 from django.utils.encoding import force_text, force_bytes
 from django.utils import six
-from django.views.debug import ExceptionReporter
+from django.views.debug import CallableSettingWrapper, ExceptionReporter
 
 from .. import BrokenException, except_args
 from ..views import (sensitive_view, non_sensitive_view, paranoid_view,
@@ -29,6 +29,21 @@ from ..views import (sensitive_view, non_sensitive_view, paranoid_view,
     multivalue_dict_key_error)
 
 
+class CallableSettingWrapperTests(TestCase):
+    """ Unittests for CallableSettingWrapper
+    """
+    def test_repr(self):
+        class WrappedCallable(object):
+            def __repr__(self):
+                return "repr from the wrapped callable"
+
+            def __call__(self):
+                pass
+
+        actual = repr(CallableSettingWrapper(WrappedCallable()))
+        self.assertEqual(actual, "repr from the wrapped callable")
+
+
 @override_settings(DEBUG=True, TEMPLATE_DEBUG=True,
                    ROOT_URLCONF="view_tests.urls")
 class DebugViewTests(TestCase):