Fix gradebook entry generation test that affected global state.

lms/djangoapps/gradebook/management/commands/tests/test_generate_gradebook_entries.py

@@ -18,12 +18,8 @@ from student.tests.factories import UserFactory, CourseEnrollmentFactory
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase, mixed_store_config
 from xmodule.modulestore.tests.factories import CourseFactory, ItemFactory
 
-MODULESTORE_CONFIG = mixed_store_config(settings.COMMON_TEST_DATA_ROOT, {}, include_xml=False)
 
 @patch.dict(settings.FEATURES, {'SIGNAL_ON_SCORE_CHANGED': True})
-
-@override_settings(MODULESTORE=MODULESTORE_CONFIG)
-@patch.dict("django.conf.settings.FEATURES", {'SIGNAL_ON_SCORE_CHANGED': False})
 class GenerateGradebookEntriesTests(ModuleStoreTestCase):
     """
     Test suite for grade generation script
@@ -32,7 +28,7 @@ class GenerateGradebookEntriesTests(ModuleStoreTestCase):
     def setUp(self):
         super(GenerateGradebookEntriesTests, self).setUp()
         # Turn off the signalling mechanism temporarily
-        settings._wrapped.default_settings.FEATURES['SIGNAL_ON_SCORE_CHANGED'] = False
+        with patch.dict(settings.FEATURES, {'SIGNAL_ON_SCORE_CHANGED': False}):
 
             # Create a couple courses to work with
             self.course = CourseFactory.create(