Ralf Schumacher and Giancarlo Fisichella will be among seven drivers testing for Force India.
The renamed team, formerly Spyker, said on Wednesday that the two would each have a full day of testing in Jerez from December 4-7, joining fellow-hopefuls Christian Klien of Austria, Italian Vitantonio Liuzzi and France's Franck Montagny.
Formula One team Sauber lost their appeal on Thursday against a court verdict that ruled in favour of Dutchman Giedo van der Garde's bid to drive for them.
Formula One drivers sought reassurance from tyre supplier Pirelli on Friday after world champion Sebastian Vettel and Ferrari's Fernando Alonso suffered punctures in second practice at the Belgian Grand Prix.