The only "test" for a god is "do people believe this is a god".<quoted text> A non testable god is unfalsifiable , a testable god is falsifiable.
I'm covering this before nuggwinkle jumps on it.
So, if I claim that the bottle of glue on my desk is a god, you can test it by asking: "Does it have believers in it."
Okay, then it's not a god.
Meanwhile, Thor, on the other hand, did have believers. Therefore Thor is a god. Specifically, the Norse god of thunder.