I beg to differ Spotty!
Airbus’ "Sharklet" wing-tip devices took to the sky for the first time on 30 November 2011 with a successful maiden flight using an A320 development aircraft. This nearly five-hour flight from Toulouse, France kicked off a multi-month test campaign to validate the Sharklets’ performance, confirm their aerodynamic behaviour and gather data for certification. Sharklets are expected to reduce fuel burn over long sectors by at least 3.5 per cent, representing an annual CO2 reduction of approximately 700 tonnes per aircraft.
That quote is taken direct from the airbus website. How can you have certification for a product if you haven't flown it for certification purposes??
On top of that, AirAsia became the first customer to receive an A320 equipped with Airbus’ Sharklets wingtip devices on 21 December 2012.
sharklets - Videos - AIRBUS.
The link shows some relevant info regarding sharklets.
Do try to keep up old chap!