[LTI Provider] Fix bug preventing unenrolled users from accessing content

lms/djangoapps/courseware/testutils.py

@@ -155,7 +155,7 @@ def test_fail_unauthenticated(self):
         self.setup_user(admin=False, enroll=True, login=False)
         self.verify_response(expected_response_code=302)
 
-    def test_fail_unenrolled_student(self):
+    def test_unenrolled_student(self):
         self.setup_course()
         self.setup_user(admin=False, enroll=False, login=True)
         self.verify_response(expected_response_code=302)

lms/djangoapps/courseware/views.py

@@ -1389,7 +1389,7 @@ def _track_successful_certificate_generation(user_id, course_id):  # pylint: dis
 
 
 @require_http_methods(["GET", "POST"])
-def render_xblock(request, usage_key_string):
+def render_xblock(request, usage_key_string, check_if_enrolled=True):
     """
     Returns an HttpResponse with HTML content for the xBlock with the given usage_key.
     The returned HTML is a chromeless rendering of the xBlock (excluding content of the containing courseware).
@@ -1400,7 +1400,7 @@ def render_xblock(request, usage_key_string):
 
     with modulestore().bulk_operations(course_key):
         # verify the user has access to the course, including enrollment check
-        course = get_course_with_access(request.user, 'load', course_key, check_if_enrolled=True)
+        course = get_course_with_access(request.user, 'load', course_key, check_if_enrolled=check_if_enrolled)
 
         # get the block, which verifies whether the user has access to the block.
         block, _ = get_module_by_usage_id(

lms/djangoapps/lti_provider/tests/test_views.py

@@ -282,3 +282,8 @@ def get_response(self):
         )
         SignatureValidator.verify = MagicMock(return_value=True)
         return self.client.post(lti_launch_url, data=LTI_DEFAULT_PARAMS)
+
+    def test_unenrolled_student(self):
+        self.setup_course()
+        self.setup_user(admin=False, enroll=False, login=True)
+        self.verify_response()

lms/djangoapps/lti_provider/views.py

@@ -205,7 +205,7 @@ def render_courseware(request, usage_key):
     """
     # return an HttpResponse object that contains the template and necessary context to render the courseware.
     from courseware.views import render_xblock
-    return render_xblock(request, unicode(usage_key))
+    return render_xblock(request, unicode(usage_key), check_if_enrolled=False)
 
 
 def parse_course_and_usage_keys(course_id, usage_id):