The Hungaroring will play host to a two day test following the Hungarian Grand Prix in July. The two day test will run into the Formula One Summer down between the Hungarian and Belgian Grand Prix.
During the Bahrain test which takes place on April 18 and 19 at the test in Hungary teams can work on whatever they want however they must run drivers from their young driver programme.
The full 2017 test schedule looks like this
Winter Testing – Barcelona – February 27 – March 2
Barcelona – March 7-10
Bahrain – April 18-19
Hungary – August 1-2
Yas Marina – November 28-29.