Sean Gelael will take part in half a day of post-season testing in Abu Dhabi on Tuesday, driving the Toro Rosso STR14.
The Indonesian driver has five FP1 sessions under his belt with the Red Bull junior squad, the last of which came in the US in 2018.
Gelael will drive the car during the morning on Tuesday before he hands duties over to Daniil Kvyat for the afternoon session.
Pierre Gasly will step into the car on Wednesday, which will be the final day of F1 on-track action this year, following the conclusion of the Abu Dhabi Grand Prix weekend on Sunday.
Ocon will get behind the wheel of the R.S 19 on both days of testing ahead of his full-time race seat next year with the Enstone squad.
Bahrain International Circuit - Winter testing