BOM-2453

tests are failings and complaining related objects doest not exists in
User table. Create object in test setup to fix it.
In another fix article id was giving integrity error.
Fixing task test.

cms/djangoapps/contentstore/tests/test_tasks.py

@@ -73,6 +73,15 @@ class ExportCourseTestCase(CourseTestCase):
         result = export_olx.delay(user.id, key, 'en')
         self._assert_failed(result, f'Unknown User ID: {user.id}')
 
+    def test_non_course_author(self):
+        """
+        Verify that users who aren't authors of the course are unable to export it
+        """
+        _, nonstaff_user = self.create_non_staff_authed_user_client()
+        key = str(self.course.location.course_key)
+        result = export_olx.delay(nonstaff_user.id, key, 'en')
+        self._assert_failed(result, 'Permission denied')
+
     def _assert_failed(self, task_result, error_message):
         """
         Verify that a task failed with the specified error message