UPD: more test.

dav_base/tests/generic.py

@@ -18,6 +18,34 @@ def skip_unless_tag_option():
         return skip('Skipped unless --tag option is used')
 
 
+class AppSetting(object):
+    def __init__(self, name, of=None):
+        self.name = name
+        self.of = of
+
+
+class AppsTestCase(SimpleTestCase):
+    app_config = None
+    settings = ()
+
+    def setUp(self):
+        super(AppsTestCase, self).setUp()
+        if self.app_config:
+            self.configured_settings = self.app_config.settings
+        else:
+            self.configured_settings = None
+
+    def test_settings(self):
+        config = self.configured_settings
+        for setting in self.settings:
+            name = setting.name
+            self.assertTrue(hasattr(config, name), 'Settings do not contain {}'.format(name))
+            value = getattr(config, name)
+            of = setting.of
+            if of is not None:
+                self.assertIsInstance(value, of)
+
+
 class Url(object):
     def __init__(self, location, name=None, func=None, **kwargs):
         self.location = location