We have introduced new code in ComboWiki.php execute() which should be heavily tested given that it departed from legacy code.

Areas to focus on are:

• validate expected creation of contribution_tracking_id and order_id
• validate that sequence is correctly incremented in existing legacy code and that we read it correctly from session in OrderIdHandler()
• validate expected behavior with missing data from request (e.g. how we treat null values and set default behaviors).
• validate we do get values from session if found and in overwirte (referrer and contribution_tracking_id) and that we don't regenerate contribution_tracking_id if found in session
• validate the page loads regardless of errors being thrown where we don't want to interrupt but proceed silently