Improved tests for app settings and added tests for dav_base.config.modules.ModuleMeta

dav_registration/tests/test_apps.py

@@ -1,4 +1,5 @@
 from django.apps import apps
+from django.core.exceptions import ImproperlyConfigured
 from six import string_types
 
 from dav_base.tests.generic import AppSetting, AppsTestCase
@@ -8,5 +9,5 @@ class TestCase(AppsTestCase):
     app_config = apps.get_app_config('dav_registration')
 
     settings = (
-        AppSetting('privacy_policy', string_types),
+        AppSetting('privacy_policy', ImproperlyConfigured, string_types),
     )