What foods or drinks cause a high reading on a blood sugar test for diabetes?

I’m going for a diabetes test and am concerned that certain foods and drinks could show a false positive.

What Effect Does Caffein/ Energy Drinks Play On Someone With Diabetes?

I am writing a research paper and I am having a hard time with some of my searches ( I think my wording is wrong) I am actually writing about 5 hour energy but just general info will work. Can anyone maybe tell me how to find info on the effects that energy drinks and [...]