Valtteri Bottas will have his first run in the new Williams FW34 when he takes to the Barcelona circuit next week.
The team has confirmed that their test driver, who will also contest 15 Friday practice sessions this season, will be in action on Day Two, Wednesday.
The team's programme will kick off with Bruno Senna behind the wheel on Tursday before he hands over to Bottas.
Pastor Maldonado will complete the line-up when he takes over for the final two days at the Circuit de Catalunya.
The Barcelona test, the second of the three pre-season tests, gets underway on the 22nd February and runs for four days.
