The two Ferrari works drivers were among several notable names to feature on an 18-car entry list for the test, set to take place on 5 November after the WEC finale at the same track, released on Tuesday.
For Wadoux, who has raced an AF Corse Ferrari in the GTE Am class in this week's WEC, it will mark her second time behind the wheel of an LMH after she drove the Toyota GR010 HYBRID in the same event last year.
Ferrari Formula 1 reserve Shwartzman meanwhile gets the chance to sample the 499P after racing in the GT World Challenge Europe Endurance Cup this season with AF, which also runs the Ferrari Hypercar programme.
All five major manufacturers in the Hypercar class will be present for the test, albeit with just one car for the majority. Only Peugeot has opted to participate with both of its cars.
Toyota will run the WEC's nominated rookie driver Josh Pierson in its solo GR010 HYBRID, as previously announced, joined by current team regular Jose Maria Lopez as well as Jack Hawksworth and Ben Barnicoat.
British pair Hawksworth and Barnicoat won this year's IMSA SportsCar Championship title in the GTD Pro category driving a Lexus RC F GT3 for Vasser Sullivan Racing.
Porsche meanwhile is giving a first run in top-flight prototype machinery to newly-crowned DTM champion Thomas Preining, who will share the works 963 LMDh with a yet-to-be-announced second driver.
Cadillac's V-Series.R will be shared by Nicolas Varrone, the WEC's nominated rookie for the test in the LMP2 class, and newly crowned European Le Mans Series LMP2 champion Kyffin Simpson.
Varrone won this year's GTE Am title for sister GM brand Corvette, while Simpson also has links to Cadillac via partner team Chip Ganassi Racing, with which he is stepping up to the IndyCar Series in 2024.
Source: Autosport