Do not sync inactive student grades with lms

Changelog.md

@@ -26,6 +26,7 @@
 - Check against mtime instead of atime for clean up of git repo directories in tmp folder (#7706)
 - Update Model: Fix level validation checks through use of a custom validator (#7696)
 - Fixed test group results table to display `extra_info` field from all test groups (#7710)
+- Fixed syncing grades with Canvas to not include inactive students (#7759)
 
 ### 🔧 Internal changes
 - Updated Github Actions CI to use cache-apt-pkgs to speed up workflow runs (#7645)

app/helpers/lti_helper.rb

@@ -117,6 +117,7 @@ def get_assignment_marks(lti_deployment, assignment)
     released_results = assignment.released_marks
                                  .joins(grouping: [{ accepted_student_memberships: { role: { user: :lti_users } } }])
                                  .where('lti_users.lti_client': lti_deployment.lti_client)
+                                 .where(roles: { hidden: false })
                                  .pluck('lti_users.lti_user_id', 'results.id')
     result_ids = released_results.pluck(1)
     grades = Result.get_total_marks(result_ids)

spec/helpers/lti_helper_spec.rb

@@ -496,6 +496,49 @@
         expect(get_assignment_marks(lti_deployment, assessment)).not_to be_empty
       end
     end
+
+    context 'when some students are inactive (hidden)' do
+      let(:student1) { create(:student, course: course) }
+      let(:student2) { create(:student, course: course) }
+      let(:assignment) { create(:assignment, course: course) }
+
+      let!(:grouping) do
+        create(:grouping, assignment: assignment).tap do |g|
+          create(:student_membership,
+                 grouping: g,
+                 role: student1,
+                 membership_status: StudentMembership::STATUSES[:accepted])
+
+          create(:student_membership,
+                 grouping: g,
+                 role: student2,
+                 membership_status: StudentMembership::STATUSES[:accepted])
+        end
+      end
+
+      before do
+        create(:result,
+               grouping: grouping,
+               released_to_students: true,
+               marking_state: Result::MARKING_STATES[:complete])
+
+        student2.update!(hidden: true)
+
+        [student1.user, student2.user].each do |usr|
+          create(:lti_user, user: usr, lti_client: lti_deployment.lti_client)
+        end
+      end
+
+      it 'does not include hidden students in the marks hash' do
+        marks = get_assignment_marks(lti_deployment, assignment)
+
+        id1 = student1.user.lti_users.first.lti_user_id
+        id2 = student2.user.lti_users.first.lti_user_id
+
+        expect(marks.keys).to include(id1)
+        expect(marks.keys).not_to include(id2)
+      end
+    end
   end
 
   describe '#get_grade_entry_form_marks' do