Sixteen drivers on the current Formula 1 grid will be in action during this week's two-day post-Bahrain Grand Prix test.
Lewis Hamilton will drive for Mercedes on Tuesday, with team-mate Valtteri Bottas taking over the following day.
Championship leader Sebastian Vettel is staying on in Bahrain after his victory to drive on Wednesday, with reserve driver Antonio Giovinazzi starting the test the day before.
Red Bull's Daniel Ricciardo is on duty on Tuesday, with reigning GP2 champion Pierre Gasly driving on day two.
Sergio Perez and Esteban Ocon will share driving duties for Force India on the opening day, with reserve Alfonso Celis Jr then taking over to get a full day of running.
Williams is also splitting driving duties, with Lance Stroll and Felipe Massa in attendance on Tuesday and ex-McLaren test driver Gary Paffett driving the FW40 on Wednesday.
Formula 2 driver Sean Gelael will drive an F1 car for the first time when he drives the Toro Rosso on Tuesday, with Daniil Kyat and Carlos Sainz Jr splitting the driving the following day.
Nico Hulkenberg and Sergey Sirotkin get a day each in the Renault while Sauber is sharing driving duties with Marcus Ericsson and Pascal Wehrlein.
McLaren development driver Oliver Turvey will test on Tuesday with Stoffel Vandoorne - who failed to start the race in Bahrain - running the following day.
McLaren racing director Eric Boullier said Turvey will focus on fine-tuning on-track correlation with the team's simulator.
FULL BAHRAIN F1 TEST LINE-UP