Update Persisted Course Grade on Subsection Grade update

Makes use of the new SUBSECTION_SCORE_CHANGED signal to trigger a task that
updates persisted course grade values. We've also renamed SCORE_CHANGED to
PROBLEM_SCORE_CHANGED to head off any issues with unclear signal names.

TNL-5740

lms/djangoapps/courseware/tests/test_module_render.py

@@ -1831,7 +1831,7 @@ class TestXmoduleRuntimeEvent(TestSubmittingProblems):
         self.assertIsNone(student_module.grade)
         self.assertIsNone(student_module.max_grade)
 
-    @patch('lms.djangoapps.grades.signals.handlers.SCORE_CHANGED.send')
+    @patch('lms.djangoapps.grades.signals.handlers.PROBLEM_SCORE_CHANGED.send')
     def test_score_change_signal(self, send_mock):
         """Test that a Django signal is generated when a score changes"""
         self.set_module_grade_using_publish(self.grade_dict)

lms/djangoapps/courseware/tests/test_submitting_problems.py

@@ -153,7 +153,7 @@ class TestSubmittingProblems(ModuleStoreTestCase, LoginEnrollmentTestCase, Probl
         self.student_user = User.objects.get(email=self.student)
         self.factory = RequestFactory()
         # Disable the score change signal to prevent other components from being pulled into tests.
-        self.score_changed_signal_patch = patch('lms.djangoapps.grades.signals.handlers.SCORE_CHANGED.send')
+        self.score_changed_signal_patch = patch('lms.djangoapps.grades.signals.handlers.PROBLEM_SCORE_CHANGED.send')
         self.score_changed_signal_patch.start()
 
     def tearDown(self):
@@ -162,7 +162,7 @@ class TestSubmittingProblems(ModuleStoreTestCase, LoginEnrollmentTestCase, Probl
 
     def _stop_signal_patch(self):
         """
-        Stops the signal patch for the SCORE_CHANGED event.
+        Stops the signal patch for the PROBLEM_SCORE_CHANGED event.
         In case a test wants to test with the event actually
         firing.
         """

lms/djangoapps/gating/signals.py

@@ -4,15 +4,15 @@ Signal handlers for the gating djangoapp
 from django.dispatch import receiver
 
 from gating import api as gating_api
-from lms.djangoapps.grades.signals.signals import SCORE_CHANGED, SUBSECTION_SCORE_CHANGED
+from lms.djangoapps.grades.signals.signals import PROBLEM_SCORE_CHANGED, SUBSECTION_SCORE_CHANGED
 from opaque_keys.edx.keys import CourseKey, UsageKey
 from xmodule.modulestore.django import modulestore
 
 
-@receiver(SCORE_CHANGED)
+@receiver(PROBLEM_SCORE_CHANGED)
 def handle_score_changed(**kwargs):
     """
-    Receives the SCORE_CHANGED signal sent by LMS when a student's score has changed
+    Receives the PROBLEM_SCORE_CHANGED signal sent by LMS when a student's score has changed
     for a given component and triggers the evaluation of any milestone relationships
     which are attached to the updated content.
 

lms/djangoapps/grades/new/course_grade.py

@@ -260,7 +260,14 @@ class CourseGradeFactory(object):
             self._compute_and_update_grade(course, course_structure, read_only)
         )
 
-    def _compute_and_update_grade(self, course, course_structure, read_only):
+    def update(self, course):
+        """
+        Updates the CourseGrade for this Factory's student.
+        """
+        course_structure = get_course_blocks(self.student, course.location)
+        self._compute_and_update_grade(course, course_structure)
+
+    def _compute_and_update_grade(self, course, course_structure, read_only=False):
         """
         Freshly computes and updates the grade for the student and course.
 

lms/djangoapps/grades/signals/handlers.py

@@ -2,6 +2,7 @@
 Grades related signals.
 """
 
+from celery import Task
 from django.dispatch import receiver
 from logging import getLogger
 
@@ -10,8 +11,8 @@ from openedx.core.lib.grade_utils import is_score_higher
 from student.models import user_by_anonymous_id
 from submissions.models import score_set, score_reset
 
-from .signals import SCORE_CHANGED, SCORE_PUBLISHED
-from ..tasks import recalculate_subsection_grade
+from .signals import PROBLEM_SCORE_CHANGED, SUBSECTION_SCORE_CHANGED, SCORE_PUBLISHED
+from ..tasks import recalculate_subsection_grade, recalculate_course_grade
 
 
 log = getLogger(__name__)
@@ -21,9 +22,9 @@ log = getLogger(__name__)
 def submissions_score_set_handler(sender, **kwargs):  # pylint: disable=unused-argument
     """
     Consume the score_set signal defined in the Submissions API, and convert it
-    to a SCORE_CHANGED signal defined in this module. Converts the unicode keys
+    to a PROBLEM_SCORE_CHANGED signal defined in this module. Converts the unicode keys
     for user, course and item into the standard representation for the
-    SCORE_CHANGED signal.
+    PROBLEM_SCORE_CHANGED signal.
 
     This method expects that the kwargs dictionary will contain the following
     entries (See the definition of score_set):
@@ -41,7 +42,7 @@ def submissions_score_set_handler(sender, **kwargs):  # pylint: disable=unused-a
     if user is None:
         return
 
-    SCORE_CHANGED.send(
+    PROBLEM_SCORE_CHANGED.send(
         sender=None,
         points_earned=points_earned,
         points_possible=points_possible,
@@ -55,9 +56,9 @@ def submissions_score_set_handler(sender, **kwargs):  # pylint: disable=unused-a
 def submissions_score_reset_handler(sender, **kwargs):  # pylint: disable=unused-argument
     """
     Consume the score_reset signal defined in the Submissions API, and convert
-    it to a SCORE_CHANGED signal indicating that the score has been set to 0/0.
+    it to a PROBLEM_SCORE_CHANGED signal indicating that the score has been set to 0/0.
     Converts the unicode keys for user, course and item into the standard
-    representation for the SCORE_CHANGED signal.
+    representation for the PROBLEM_SCORE_CHANGED signal.
 
     This method expects that the kwargs dictionary will contain the following
     entries (See the definition of score_reset):
@@ -71,7 +72,7 @@ def submissions_score_reset_handler(sender, **kwargs):  # pylint: disable=unused
     if user is None:
         return
 
-    SCORE_CHANGED.send(
+    PROBLEM_SCORE_CHANGED.send(
         sender=None,
         points_earned=0,
         points_possible=0,
@@ -106,7 +107,7 @@ def score_published_handler(sender, block, user, raw_earned, raw_possible, only_
     if update_score:
         set_score(user.id, block.location, raw_earned, raw_possible)
 
-        SCORE_CHANGED.send(
+        PROBLEM_SCORE_CHANGED.send(
             sender=None,
             points_earned=raw_earned,
             points_possible=raw_possible,
@@ -118,10 +119,10 @@ def score_published_handler(sender, block, user, raw_earned, raw_possible, only_
     return update_score
 
 
-@receiver(SCORE_CHANGED)
-def enqueue_grade_update(sender, **kwargs):  # pylint: disable=unused-argument
+@receiver(PROBLEM_SCORE_CHANGED)
+def enqueue_subsection_update(sender, **kwargs):  # pylint: disable=unused-argument
     """
-    Handles the SCORE_CHANGED signal by enqueueing an update operation to occur asynchronously.
+    Handles the PROBLEM_SCORE_CHANGED signal by enqueueing a subsection update operation to occur asynchronously.
     """
     recalculate_subsection_grade.apply_async(
         args=(
@@ -131,3 +132,14 @@ def enqueue_grade_update(sender, **kwargs):  # pylint: disable=unused-argument
             kwargs.get('only_if_higher'),
         )
     )
+
+
+@receiver(SUBSECTION_SCORE_CHANGED)
+def enqueue_course_update(sender, **kwargs):  # pylint: disable=unused-argument
+    """
+    Handles the SUBSECTION_SCORE_CHANGED signal by enqueueing a course update operation to occur asynchronously.
+    """
+    if isinstance(sender, Task):  # We're already in a async worker, just do the task
+        recalculate_course_grade.apply(args=(kwargs['user'].id, unicode(kwargs['course'].id)))
+    else:  # Otherwise, queue the work to be done asynchronously
+        recalculate_course_grade.apply_async(args=(kwargs['user'].id, unicode(kwargs['course'].id)))

lms/djangoapps/grades/signals/signals.py

@@ -10,7 +10,7 @@ from django.dispatch import Signal
 # regardless of the new and previous values of the score (i.e. it may be the
 # case that this signal is generated when a user re-attempts a problem but
 # receives the same score).
-SCORE_CHANGED = Signal(
+PROBLEM_SCORE_CHANGED = Signal(
     providing_args=[
         'user_id',  # Integer User ID
         'course_id',  # Unicode string representing the course
@@ -25,7 +25,7 @@ SCORE_CHANGED = Signal(
 
 # Signal that indicates that a user's score for a problem has been published
 # for possible persistence and update.  Typically, most clients should listen
-# to the SCORE_CHANGED signal instead, since that is signalled only after the
+# to the PROBLEM_SCORE_CHANGED signal instead, since that is signalled only after the
 # problem's score is changed.
 SCORE_PUBLISHED = Signal(
     providing_args=[
@@ -40,7 +40,7 @@ SCORE_PUBLISHED = Signal(
 
 
 # Signal that indicates that a user's score for a subsection has been updated.
-# This is a downstream signal of SCORE_CHANGED sent for each affected containing
+# This is a downstream signal of PROBLEM_SCORE_CHANGED sent for each affected containing
 # subsection.
 SUBSECTION_SCORE_CHANGED = Signal(
     providing_args=[

lms/djangoapps/grades/tasks.py

@@ -13,6 +13,7 @@ from opaque_keys.edx.locator import CourseLocator
 from openedx.core.djangoapps.content.block_structure.api import get_course_in_cache
 from xmodule.modulestore.django import modulestore
 
+from .new.course_grade import CourseGradeFactory
 from .new.subsection_grade import SubsectionGradeFactory
 from .signals.signals import SUBSECTION_SCORE_CHANGED
 from .transformer import GradesTransformer
@@ -57,7 +58,7 @@ def recalculate_subsection_grade(user_id, course_id, usage_id, only_if_higher):
                 only_if_higher,
             )
             SUBSECTION_SCORE_CHANGED.send(
-                sender=None,
+                sender=recalculate_subsection_grade,
                 course=course,
                 user=student,
                 subsection_grade=subsection_grade,
@@ -65,3 +66,21 @@ def recalculate_subsection_grade(user_id, course_id, usage_id, only_if_higher):
 
     except IntegrityError as exc:
         raise recalculate_subsection_grade.retry(args=[user_id, course_id, usage_id], exc=exc)
+
+
+@task(default_retry_delay=30, routing_key=settings.RECALCULATE_GRADES_ROUTING_KEY)
+def recalculate_course_grade(user_id, course_id):
+    """
+    Updates a saved course grade.
+    This method expects the following parameters:
+       - user_id: serialized id of applicable User object
+       - course_id: Unicode string representing the course
+    """
+    student = User.objects.get(id=user_id)
+    course_key = CourseLocator.from_string(course_id)
+    course = modulestore().get_course(course_key, depth=0)
+
+    try:
+        CourseGradeFactory(student).update(course)
+    except IntegrityError as exc:
+        raise recalculate_course_grade.retry(args=[user_id, course_id], exc=exc)

lms/djangoapps/grades/tests/test_new.py

@@ -574,6 +574,8 @@ class TestCourseGradeLogging(SharedModuleStoreTestCase):
             enabled_for_course=True
         ):
             with patch('lms.djangoapps.grades.new.course_grade.log') as log_mock:
+                # TODO: once merged with the "glue code" PR, update expected logging to include the relevant new info
+
                 # the course grade has not been created, so we expect each grade to be created
                 self._create_course_grade_and_check_logging(
                     grade_factory,

lms/djangoapps/grades/tests/test_signals.py

@@ -42,7 +42,7 @@ class SubmissionSignalRelayTest(TestCase):
         Configure mocks for all the dependencies of the render method
         """
         super(SubmissionSignalRelayTest, self).setUp()
-        self.signal_mock = self.setup_patch('lms.djangoapps.grades.signals.signals.SCORE_CHANGED.send', None)
+        self.signal_mock = self.setup_patch('lms.djangoapps.grades.signals.signals.PROBLEM_SCORE_CHANGED.send', None)
         self.user_mock = MagicMock()
         self.user_mock.id = 42
         self.get_user_mock = self.setup_patch(
@@ -68,7 +68,7 @@ class SubmissionSignalRelayTest(TestCase):
     def test_score_set_signal_handler(self, handler, kwargs, earned, possible):
         """
         Ensure that on receipt of a score_(re)set signal from the Submissions API,
-        the signal handler correctly converts it to a SCORE_CHANGED signal.
+        the signal handler correctly converts it to a PROBLEM_SCORE_CHANGED signal.
 
         Also ensures that the handler calls user_by_anonymous_id correctly.
         """

lms/djangoapps/grades/tests/test_tasks.py

@@ -7,17 +7,20 @@ import ddt
 from django.conf import settings
 from django.db.utils import IntegrityError
 from mock import patch
+from uuid import uuid4
 from unittest import skip
 
+from opaque_keys.edx.locator import CourseLocator
 from student.models import anonymous_id_for_user
 from student.tests.factories import UserFactory
+from xmodule.modulestore.django import modulestore
 from xmodule.modulestore import ModuleStoreEnum
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory, ItemFactory, check_mongo_calls
 
 from lms.djangoapps.grades.config.models import PersistentGradesEnabledFlag
-from lms.djangoapps.grades.signals.signals import SCORE_CHANGED
-from lms.djangoapps.grades.tasks import recalculate_subsection_grade
+from lms.djangoapps.grades.signals.signals import PROBLEM_SCORE_CHANGED, SUBSECTION_SCORE_CHANGED
+from lms.djangoapps.grades.tasks import recalculate_course_grade, recalculate_subsection_grade
 
 
 @patch.dict(settings.FEATURES, {'PERSISTENT_GRADES_ENABLED_FOR_ALL_TESTS': False})
@@ -59,24 +62,91 @@ class RecalculateSubsectionGradeTest(ModuleStoreTestCase):
         _ = anonymous_id_for_user(self.user, self.course.id)
         # pylint: enable=attribute-defined-outside-init,no-member
 
-    def test_score_changed_signal_queues_task(self):
+    @ddt.data(
+        ('lms.djangoapps.grades.tasks.recalculate_subsection_grade.apply_async', PROBLEM_SCORE_CHANGED),
+        ('lms.djangoapps.grades.tasks.recalculate_course_grade.apply_async', SUBSECTION_SCORE_CHANGED)
+    )
+    @ddt.unpack
+    def test_signal_queues_task(self, enqueue_op, test_signal):
         """
-        Ensures that the SCORE_CHANGED signal enqueues a recalculate subsection grade task.
+        Ensures that the PROBLEM_SCORE_CHANGED and SUBSECTION_SCORE_CHANGED signals enqueue the correct tasks.
         """
         self.set_up_course()
+        if test_signal == PROBLEM_SCORE_CHANGED:
+            send_args = self.score_changed_kwargs
+            expected_args = tuple(self.score_changed_kwargs.values())
+        else:
+            send_args = {'user': self.user, 'course': self.course}
+            expected_args = (self.score_changed_kwargs['user_id'], self.score_changed_kwargs['course_id'])
         with patch(
-            'lms.djangoapps.grades.tasks.recalculate_subsection_grade.apply_async',
+            enqueue_op,
             return_value=None
         ) as mock_task_apply:
-            SCORE_CHANGED.send(sender=None, **self.score_changed_kwargs)
-            mock_task_apply.assert_called_once_with(args=tuple(self.score_changed_kwargs.values()))
+            test_signal.send(sender=None, **send_args)
+            mock_task_apply.assert_called_once_with(args=expected_args)
 
-    @ddt.data(ModuleStoreEnum.Type.mongo, ModuleStoreEnum.Type.split)
-    def test_subsection_grade_updated(self, default_store):
+    @patch('lms.djangoapps.grades.signals.signals.SUBSECTION_SCORE_CHANGED.send')
+    def test_subsection_update_triggers_course_update(self, mock_course_signal):
+        """
+        Ensures that the subsection update operation also updates the course grade.
+        """
+        self.set_up_course()
+        mock_return = uuid4()
+        course_key = CourseLocator.from_string(unicode(self.course.id))
+        course = modulestore().get_course(course_key, depth=0)
+        with patch(
+            'lms.djangoapps.grades.new.subsection_grade.SubsectionGradeFactory.update',
+            return_value=mock_return
+        ):
+            recalculate_subsection_grade.apply(args=tuple(self.score_changed_kwargs.values()))
+        mock_course_signal.assert_called_once_with(
+            sender=recalculate_subsection_grade,
+            course=course,
+            user=self.user,
+            subsection_grade=mock_return,
+        )
+
+    @ddt.data(True, False)
+    def test_course_update_enqueuing(self, should_be_async):
+        """
+        Ensures that the course update operation is enqueued on an async queue (or not) as expected.
+        """
+        base = 'lms.djangoapps.grades.tasks.recalculate_course_grade'
+        if should_be_async:
+            executed = base + '.apply_async'
+            other = base + '.apply'
+            sender = None
+        else:
+            executed = base + '.apply'
+            other = base + '.apply_async'
+            sender = recalculate_subsection_grade
+        self.set_up_course()
+
+        with patch(executed) as executed_task:
+            with patch(other) as other_task:
+                SUBSECTION_SCORE_CHANGED.send(
+                    sender=sender,
+                    course=self.course,
+                    user=self.user,
+                )
+                other_task.assert_not_called()
+                executed_task.assert_called_once_with(
+                    args=(
+                        self.score_changed_kwargs['user_id'],
+                        self.score_changed_kwargs['course_id'],
+                    )
+                )
+
+    @ddt.data(
+        (ModuleStoreEnum.Type.mongo, 1),
+        (ModuleStoreEnum.Type.split, 0),
+    )
+    @ddt.unpack
+    def test_subsection_grade_updated(self, default_store, added_queries):
         with self.store.default_store(default_store):
             self.set_up_course()
             self.assertTrue(PersistentGradesEnabledFlag.feature_enabled(self.course.id))
-            with check_mongo_calls(2) and self.assertNumQueries(13):
+            with check_mongo_calls(2) and self.assertNumQueries(21 + added_queries):
                 recalculate_subsection_grade.apply(args=tuple(self.score_changed_kwargs.values()))
 
     def test_single_call_to_create_block_structure(self):
@@ -87,16 +157,20 @@ class RecalculateSubsectionGradeTest(ModuleStoreTestCase):
             return_value=None,
         ) as mock_block_structure_create:
             recalculate_subsection_grade.apply(args=tuple(self.score_changed_kwargs.values()))
-            self.assertEquals(mock_block_structure_create.call_count, 1)
+            self.assertEquals(mock_block_structure_create.call_count, 2)
 
-    @ddt.data(ModuleStoreEnum.Type.mongo, ModuleStoreEnum.Type.split)
-    def test_query_count_does_not_change_with_more_problems(self, default_store):
+    @ddt.data(
+        (ModuleStoreEnum.Type.mongo, 1),
+        (ModuleStoreEnum.Type.split, 0),
+    )
+    @ddt.unpack
+    def test_query_count_does_not_change_with_more_problems(self, default_store, added_queries):
         with self.store.default_store(default_store):
             self.set_up_course()
             self.assertTrue(PersistentGradesEnabledFlag.feature_enabled(self.course.id))
             ItemFactory.create(parent=self.sequential, category='problem', display_name='problem2')
             ItemFactory.create(parent=self.sequential, category='problem', display_name='problem3')
-            with check_mongo_calls(2) and self.assertNumQueries(13):
+            with check_mongo_calls(2) and self.assertNumQueries(21 + added_queries):
                 recalculate_subsection_grade.apply(args=tuple(self.score_changed_kwargs.values()))
 
     @ddt.data(ModuleStoreEnum.Type.mongo, ModuleStoreEnum.Type.split)
@@ -104,7 +178,8 @@ class RecalculateSubsectionGradeTest(ModuleStoreTestCase):
         with self.store.default_store(default_store):
             self.set_up_course(enable_subsection_grades=False)
             self.assertFalse(PersistentGradesEnabledFlag.feature_enabled(self.course.id))
-            with check_mongo_calls(2) and self.assertNumQueries(5):
+            additional_queries = 1 if default_store == ModuleStoreEnum.Type.mongo else 0
+            with check_mongo_calls(2) and self.assertNumQueries(12 + additional_queries):
                 recalculate_subsection_grade.apply(args=tuple(self.score_changed_kwargs.values()))
 
     @skip("Pending completion of TNL-5089")
@@ -124,7 +199,7 @@ class RecalculateSubsectionGradeTest(ModuleStoreTestCase):
 
     @patch('lms.djangoapps.grades.tasks.recalculate_subsection_grade.retry')
     @patch('lms.djangoapps.grades.new.subsection_grade.SubsectionGradeFactory.update')
-    def test_retry_on_integrity_error(self, mock_update, mock_retry):
+    def test_retry_subsection_update_on_integrity_error(self, mock_update, mock_retry):
         """
         Ensures that tasks will be retried if IntegrityErrors are encountered.
         """
@@ -132,3 +207,19 @@ class RecalculateSubsectionGradeTest(ModuleStoreTestCase):
         mock_update.side_effect = IntegrityError("WHAMMY")
         recalculate_subsection_grade.apply(args=tuple(self.score_changed_kwargs.values()))
         self.assertTrue(mock_retry.called)
+
+    @patch('lms.djangoapps.grades.tasks.recalculate_course_grade.retry')
+    @patch('lms.djangoapps.grades.new.course_grade.CourseGradeFactory.update')
+    def test_retry_course_update_on_integrity_error(self, mock_update, mock_retry):
+        """
+        Ensures that tasks will be retried if IntegrityErrors are encountered.
+        """
+        self.set_up_course()
+        mock_update.side_effect = IntegrityError("WHAMMY")
+        recalculate_course_grade.apply(
+            args=(
+                self.score_changed_kwargs['user_id'],
+                self.score_changed_kwargs['course_id'],
+            )
+        )
+        self.assertTrue(mock_retry.called)

lms/djangoapps/instructor/enrollment.py

@@ -19,7 +19,7 @@ from courseware.model_data import FieldDataCache
 from courseware.module_render import get_module_for_descriptor
 from edxmako.shortcuts import render_to_string
 from lms.djangoapps.grades.scores import weighted_score
-from lms.djangoapps.grades.signals.signals import SCORE_CHANGED
+from lms.djangoapps.grades.signals.signals import PROBLEM_SCORE_CHANGED
 from openedx.core.djangoapps.lang_pref import LANGUAGE_KEY
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 from openedx.core.djangoapps.user_api.models import UserPreference
@@ -293,7 +293,7 @@ def _reset_module_attempts(studentmodule):
 
 def _fire_score_changed_for_block(course_id, student, block, module_state_key):
     """
-    Fires a SCORE_CHANGED event for the given module. The earned points are
+    Fires a PROBLEM_SCORE_CHANGED event for the given module. The earned points are
     always zero. We must retrieve the possible points from the XModule, as
     noted below.
     """
@@ -322,7 +322,7 @@ def _fire_score_changed_for_block(course_id, student, block, module_state_key):
             points_earned, points_possible = weighted_score(0, max_score, getattr(module, 'weight', None))
     else:
         points_earned, points_possible = 0, 0
-    SCORE_CHANGED.send(
+    PROBLEM_SCORE_CHANGED.send(
         sender=None,
         points_possible=points_possible,
         points_earned=points_earned,

lms/djangoapps/instructor/tests/test_api.py

@@ -3190,7 +3190,7 @@ class TestInstructorAPIRegradeTask(SharedModuleStoreTestCase, LoginEnrollmentTes
         })
         self.assertEqual(response.status_code, 400)
 
-    @patch('lms.djangoapps.grades.signals.handlers.SCORE_CHANGED.send')
+    @patch('lms.djangoapps.grades.signals.handlers.PROBLEM_SCORE_CHANGED.send')
     def test_reset_student_attempts_delete(self, _mock_signal):
         """ Test delete single student state. """
         url = reverse('reset_student_attempts', kwargs={'course_id': self.course.id.to_deprecated_string()})

lms/djangoapps/instructor/tests/test_enrollment.py

@@ -378,7 +378,7 @@ class TestInstructorEnrollmentStudentModule(SharedModuleStoreTestCase):
         reset_student_attempts(self.course_key, self.user, msk, requesting_user=self.user)
         self.assertEqual(json.loads(module().state)['attempts'], 0)
 
-    @mock.patch('lms.djangoapps.grades.signals.handlers.SCORE_CHANGED.send')
+    @mock.patch('lms.djangoapps.grades.signals.handlers.PROBLEM_SCORE_CHANGED.send')
     def test_delete_student_attempts(self, _mock_signal):
         msk = self.course_key.make_usage_key('dummy', 'module')
         original_state = json.dumps({'attempts': 32, 'otherstuff': 'alsorobots'})
@@ -404,7 +404,7 @@ class TestInstructorEnrollmentStudentModule(SharedModuleStoreTestCase):
 
     # Disable the score change signal to prevent other components from being
     # pulled into tests.
-    @mock.patch('lms.djangoapps.grades.signals.handlers.SCORE_CHANGED.send')
+    @mock.patch('lms.djangoapps.grades.signals.handlers.PROBLEM_SCORE_CHANGED.send')
     def test_delete_submission_scores(self, _mock_signal):
         user = UserFactory()
         problem_location = self.course_key.make_usage_key('dummy', 'module')

lms/djangoapps/instructor/tests/test_services.py

@@ -49,7 +49,7 @@ class InstructorServiceTests(SharedModuleStoreTestCase):
             state=json.dumps({'attempts': 2}),
         )
 
-    @mock.patch('lms.djangoapps.grades.signals.handlers.SCORE_CHANGED.send')
+    @mock.patch('lms.djangoapps.grades.signals.handlers.PROBLEM_SCORE_CHANGED.send')
     def test_reset_student_attempts_delete(self, _mock_signal):
         """
         Test delete student state.

lms/djangoapps/lti_provider/tasks.py

@@ -8,7 +8,7 @@ from django.dispatch import receiver
 import logging
 
 from lms.djangoapps.grades import progress
-from lms.djangoapps.grades.signals.signals import SCORE_CHANGED
+from lms.djangoapps.grades.signals.signals import PROBLEM_SCORE_CHANGED
 from lms import CELERY_APP
 from lti_provider.models import GradedAssignment
 import lti_provider.outcomes as outcomes
@@ -19,11 +19,11 @@ from xmodule.modulestore.django import modulestore
 log = logging.getLogger("edx.lti_provider")
 
 
-@receiver(SCORE_CHANGED)
+@receiver(PROBLEM_SCORE_CHANGED)
 def score_changed_handler(sender, **kwargs):  # pylint: disable=unused-argument
     """
     Consume signals that indicate score changes. See the definition of
-    SCORE_CHANGED for a description of the signal.
+    PROBLEM_SCORE_CHANGED for a description of the signal.
     """
     points_possible = kwargs.get('points_possible', None)
     points_earned = kwargs.get('points_earned', None)