So, this kinda makes sense, but it also kinda creeps me out. DxOMark is a pretty well-known name when it comes to testing lenses, sensors and cameras. And that includes the cameras in your phone. In this case, specifically, the selfie camera. At least as of January of this year.
To help improve the tests, and standardising their process for consistency, they made a realistic mannequin selfie stand-in made from 3D scanning a real human subject. If you ask me, though, it has that sort of Westworld Vibe.