You cannot for something that doesn’t exist in that reality. There is also no test for fairies, dragons, or unicorns. I’m sure that theists will try to claim that the universe existing is proof that deities exist, but don’t be fooled. If I said that fairies created the universe would you believe the universe is evidence that fairies exist? Any claim that states ‘we don’t know, therefore God’ is automatically illogical as it’s a god of the gaps fallacy. The universe and everything in it existing is evidence that the universe exists. It cannot be used as evidence for a supernatural being because everything in the universe is natural. No one have ever proven any supernatural event happening in the universe, all we hear are unjustifiable verbal testimonies. Randy and many skeptics have times set up bounties for anyone that can prove paranormal activities, no one has won it and many participants failed. There is no objective evidence that anything supernatural has ever happened anywhere. There is certainly no objective evidence for any of the 4,200(ish) gods that theists claim to exist. The easy explanation for there being 4,200 gods, and no evidence that they actually exist, is that humans have a need to tell stories. These stories evolve into beliefs, and over time this leads to children being indoctrinated with tales of supernatural beings. In short: theists have tried thousands of ’tests’ searching for their specific imaginary supernatural being. Obviously, none of them have ever discovered anything because there is nothing to discover. It doesn’t matter who the scientists is, you cannot discover something that just isn’t there