Photonic
Ad astra!
(Can you test for God? Nope.)
Actually you can test for God very easily.
Biblical prophesy can be used to test, not only that he lives but that he sees the end from the beginning.
In fact, in the testing arena, God said, "If one of My prophets is wrong, take him out back and stone him to death." That was/is the test.
God passed/continues to pass........
God also said that Christians are immune to all poison.
Why don't you test THAT?