MacBook Pro 2016 does not turn on
If you press the power button and nothing happens, there's no special or secret combination of keystrokes that will get you into diagnostic mode,

Given that it is so new (and still under warranty), you want an exchange, not a repair.  This is way too new for you to be having this type of difficulty.

As to your question, "what will Apple do?"  They will look at it, press the power button, check your charger and then then they will give you another machine.  They won't attempt to repair it.