diff --git a/edx_exams/apps/core/management/commands/test/test_bulk_add_course_staff.py b/edx_exams/apps/core/management/commands/test/test_bulk_add_course_staff.py
index 756d3d65..2a8dd4aa 100644
--- a/edx_exams/apps/core/management/commands/test/test_bulk_add_course_staff.py
+++ b/edx_exams/apps/core/management/commands/test/test_bulk_add_course_staff.py
@@ -43,11 +43,9 @@ def test_empty_csv(self):
                 call_command(self.command, f'--csv_path={csv.name}')
 
     def test_add_course_staff_with_existing_user(self):
-        # todo: create course staff with existing user
         lines = ['amy,amy@pond.com,staff,course-v1:edx+test+f19\n']
         with NamedTemporaryFile() as csv:
             csv = self._write_test_csv(csv, lines)
-            # todo: assert number of queries is correct
             with self.assertNumQueries(2):
                 call_command(self.command, f'--csv_path={csv.name}')
                 assert CourseStaffRole.objects.filter(user=self.user.id).exists()
@@ -65,12 +63,16 @@ def test_add_course_staff_with_batch_size(self):
                  'sam,sam@pond.com,staff,course-v1:edx+test+f20\n']
         with NamedTemporaryFile() as csv:
             csv = self._write_test_csv(csv, lines)
-            # todo: assert number of queries is correct
             with self.assertNumQueries(2):
                 call_command(self.command, f'--csv_path={csv.name}', '--batch_size=1')
                 assert CourseStaffRole.objects.filter(course_id='course-v1:edx+test+f20').count() == 2
 
     def test_add_course_staff_with_batch_delay(self):
-        # todo: test with setting batch delay
-        # todo: see bulk unenroll for example of batch unenroll
-        return
+        lines = ['pam,pam@pond.com,staff,course-v1:edx+test+f20\n',
+                 'sam,sam@pond.com,staff,course-v1:edx+test+f20\n']
+        with NamedTemporaryFile() as csv:
+            csv = self._write_test_csv(csv, lines)
+            with self.assertNumQueries(2):
+                call_command(self.command, f'--csv_path={csv.name}', '--batch_size=1', '--batch_delay=2')
+                assert CourseStaffRole.objects.filter(course_id='course-v1:edx+test+f20').count() == 2
+