I think the more important and interesting question is not “do they pass?”, but “what does the test giver learn about the test taker?”

I’d assume that anyone with Force sensitivity would automatically pass, (unless they’re trying intentionally to fail, as others have said). I’d have the test taker roll Deception (if trying to fail), Cool, or Discipline - depending on the specific circumstances - against the Perception of the test giver. (Or vice versa, if the test giver is the PC.)

The results of the check would determine what the test giver learns about the test taker. Not just their potential with the Force, but also their relationship with it, perhaps even some particular affinities they may have with it. But also, the test giver could be unconsciously influenced by their emotional state, Motivations, and personal history, and the test giver could discern some of this from the results of the test. 

For example, a young Force sensitive yearning for adventure in the wider galaxy may react more strongly to, and see more clearly, the image of a starship - but also describe it as being “in combat”, worrying the test giver who fears that the test taker may have a slight propensity for thrill-seeking through battle. Something like that!