allow to turn off prerequisite enforcement

edx_proctoring/api.py

@@ -1108,16 +1108,16 @@ def get_student_view(user_id, course_id, content_id,
         credit_state = context['credit_state']
 
         has_mode = _check_eligibility_of_enrollment_mode(credit_state)
-        has_prerequisites = False
-        if has_mode:
+        if not has_mode:
+            return None
+
         has_prerequisites = _check_eligibility_of_prerequisites(credit_state)
 
         # see if the user has passed all pre-requisite credit eligibility
         # checks, otherwise just show the user the exam unproctored
-        if not has_mode or not has_prerequisites:
+        if not has_prerequisites and constants.ENFORCE_PREREQUISITES:
             # if we are in the right mode and if we don't have
             # pre-requisites, then we implicitly decline the exam
-            if has_mode:
             attempt = get_exam_attempt(exam_id, user_id)
             if not attempt:
                 # user hasn't a record of attempt, create one now
@@ -1131,9 +1131,6 @@ def get_student_view(user_id, course_id, content_id,
                     raise_if_not_found=False
                 )
 
-            # don't override context, let the courseware show
-            return None
-
     attempt = get_exam_attempt(exam_id, user_id)
 
     # if user has declined the attempt, then we don't show the

edx_proctoring/constants.py

@@ -41,3 +41,9 @@ REQUIRE_FAILURE_SECOND_REVIEWS = (
     'REQUIRE_FAILURE_SECOND_REVIEWS' in settings.PROCTORING_SETTINGS
     else getattr(settings, 'REQUIRE_FAILURE_SECOND_REVIEWS', True)
 )
+
+ENFORCE_PREREQUISITES = (
+    settings.PROCTORING_SETTINGS['ENFORCE_PREREQUISITES'] if
+    'ENFORCE_PREREQUISITES' in settings.PROCTORING_SETTINGS
+    else False
+)

edx_proctoring/tests/test_api.py

@@ -724,14 +724,19 @@ class ProctoredExamApiTests(LoggedInTestCase):
         self.assertIsNone(rendered_response)
 
     @ddt.data(
-        ('reverification', None, True, True, False),
-        ('reverification', 'failed', False, False, True),
-        ('reverification', 'failed', False, True, False),
-        ('reverification', 'satisfied', True, True, False),
-        ('grade', 'failed', True, False, False)
+        (True, 'reverification', None, True, True, False),
+        (True, 'reverification', 'failed', False, False, True),
+        (True, 'reverification', 'failed', True, True, False),
+        (True, 'reverification', 'satisfied', True, True, False),
+        (True, 'grade', 'failed', True, False, False),
+        (False, 'reverification', None, True, True, False),
+        (False, 'reverification', 'failed', True, False, False),
+        (False, 'reverification', 'failed', True, True, False),
+        (False, 'reverification', 'satisfied', True, True, False),
+        (False, 'grade', 'failed', True, False, False),
     )
     @ddt.unpack
-    def test_prereq_scenarios(self, namespace, req_status, show_proctored,
+    def test_prereq_scenarios(self, enforce_prereq, namespace, req_status, show_proctored,
                               pre_create_attempt, mark_as_declined):
         """
         This test asserts that proctoring will not be displayed under the following
@@ -740,6 +745,7 @@ class ProctoredExamApiTests(LoggedInTestCase):
         - Verified student has not completed all 'reverification' requirements
         """
 
+        with patch('edx_proctoring.constants.ENFORCE_PREREQUISITES', enforce_prereq):
             exam = get_exam_by_id(self.proctored_exam_id)
 
             if pre_create_attempt: