Jenson Button will be the first driver to sample the new McLaren MP4-27 at next month's Jerez test.
McLaren has confirmed that Button will take the wheel on February 7 for the first run of the car at the Spanish track.
Button will also drive on the second day of the test, with team-mate Lewis Hamilton taking over for the final two days.
Hamilton will then have the first two days of the Barcelona test, which kicks off on February 21, with Button taking over for the final two. The pair will then alternate running in the final four-day test at the same venue, with Button driving on the first day on March 1.
McLaren managing director Jonathan Neale confirmed last week that the new car had passed all of the FIA crash tests before the end of last year, meaning that it will definitely be ready for the start of pre-season testing.