Force India announced last week that the Spaniard would join the team as its test and reserve driver for the 2014 season.
The 2012 European Formula 3 champion will compete in the DTM with Mercedes for a second straight season, but will also have Friday practice outings with Force India during the year.
Juncadella will be at the wheel of the new Mercedes-powered VJM07 on Thursday at Jerez. He will take over from Nico Hulkenberg, in action on Wednesday.
Force India reveals the VJM07
Sergio Perez will be the man in charge of testing duties on the opening day of the test on Tuesday.
Force India is yet to confirm who will drive on the final day of the test on Friday.
VIDEO: Juncadella talks 2014 on The Racer's Edge with F1 Racing
Follow the Jerez F1 test as it happens with AUTOSPORT Live coverage from Tuesday morning
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