Add a test case for an XBlock that has no student state fields, but sets a score

lms/djangoapps/courseware/tests/test_module_render.py

@@ -78,6 +78,27 @@ class EmptyXModuleDescriptor(XModuleDescriptor):  # pylint: disable=abstract-met
     module_class = EmptyXModule
 
 
+class GradedStatelessXBlock(XBlock):
+    """
+    This XBlock exists to test grade storage for blocks that don't store
+    student state in a scoped field.
+    """
+
+    @XBlock.json_handler
+    def set_score(self, json_data, suffix):  # pylint: disable=unused-argument
+        """
+        Set the score for this testing XBlock.
+        """
+        self.runtime.publish(
+            self,
+            'grade',
+            {
+                'value': json_data['grade'],
+                'max_value': 1
+            }
+        )
+
+
 @attr('shard_1')
 @ddt.ddt
 class ModuleRenderTestCase(ModuleStoreTestCase, LoginEnrollmentTestCase):
@@ -335,8 +356,7 @@ class TestHandleXBlockCallback(ModuleStoreTestCase, LoginEnrollmentTestCase):
         self.course_key = self.create_toy_course()
         self.location = self.course_key.make_usage_key('chapter', 'Overview')
         self.toy_course = modulestore().get_course(self.course_key)
-        self.mock_user = UserFactory()
-        self.mock_user.id = 1
+        self.mock_user = UserFactory.create()
         self.request_factory = RequestFactory()
 
         # Construct a mock module for the modulestore to return
@@ -476,6 +496,33 @@ class TestHandleXBlockCallback(ModuleStoreTestCase, LoginEnrollmentTestCase):
                 'bad_dispatch',
             )
 
+    @XBlock.register_temp_plugin(GradedStatelessXBlock, identifier='stateless_scorer')
+    def test_score_without_student_state(self):
+        course = CourseFactory.create()
+        block = ItemFactory.create(category='stateless_scorer', parent=course)
+
+        request = self.request_factory.post(
+            'dummy_url',
+            data=json.dumps({"grade": 0.75}),
+            content_type='application/json'
+        )
+        request.user = self.mock_user
+
+        response = render.handle_xblock_callback(
+            request,
+            unicode(course.id),
+            quote_slashes(unicode(block.scope_ids.usage_id)),
+            'set_score',
+            '',
+        )
+        self.assertEquals(response.status_code, 200)
+        student_module = StudentModule.objects.get(
+            student=self.mock_user,
+            module_state_key=block.scope_ids.usage_id,
+        )
+        self.assertEquals(student_module.grade, 0.75)
+        self.assertEquals(student_module.max_grade, 1)
+
     @patch.dict('django.conf.settings.FEATURES', {'ENABLE_XBLOCK_VIEW_ENDPOINT': True})
     def test_xblock_view_handler(self):
         args = [