fix the bug where the learner gets full time even after due date is passed

edx_proctoring/tests/test_views.py

@@ -905,6 +905,33 @@ class TestStudentProctoredExamAttempt(LoggedInTestCase):
             response_data = json.loads(response.content)
             self.assertEqual(response_data['status'], 'submitted')
 
+    def test_attempt_with_duedate_expired(self):
+        """
+        Tests that an exam with duedate passed cannot be accessed
+        """
+        # create an exam with duedate passed
+        proctored_exam = ProctoredExam.objects.create(
+            course_id='a/b/c',
+            content_id='test_content',
+            exam_name='Test Exam',
+            external_id='123aXqe3',
+            time_limit_mins=90,
+            due_date=datetime.now(pytz.UTC) - timedelta(minutes=10),
+        )
+        attempt_data = {
+            'exam_id': proctored_exam.id,
+            'external_id': proctored_exam.external_id,
+            'start_clock': True,
+        }
+
+        # Starting exam attempt
+        response = self.client.post(
+            reverse('edx_proctoring.proctored_exam.attempt.collection'),
+            attempt_data
+        )
+        self.assertEqual(response.status_code, 400)
+        self.assertRaises(ProctoredExamPermissionDenied)
+
     def test_remove_attempt(self):
         """
         Confirms that an attempt can be removed

edx_proctoring/views.py

@@ -595,14 +595,16 @@ class StudentProctoredExamAttemptCollection(AuthenticatedAPIView):
         exam_id = request.data.get('exam_id', None)
         attempt_proctored = request.data.get('attempt_proctored', 'false').lower() == 'true'
         try:
+            exam = get_exam_by_id(exam_id)
+            if exam['due_date'] and exam['due_date'] <= datetime.now(pytz.UTC):
+                raise ProctoredExamPermissionDenied('Attempted to access expired exam')
+
             exam_attempt_id = create_exam_attempt(
                 exam_id=exam_id,
                 user_id=request.user.id,
                 taking_as_proctored=attempt_proctored
             )
 
-            exam = get_exam_by_id(exam_id)
-
             # if use elected not to take as proctored exam, then
             # use must take as open book, and loose credit eligibility
             if exam['is_proctored'] and not attempt_proctored: