The literacy test that I took wasn't even controversial. Back in middle school my civics teacher actually had us take one of these literacy tests. While very few people in the class passed the test (I think just myself and one other person), anyone actually familiar with the text of the US Constitution should be able to pass it. Sadly almost no one in our class was familiar with the US Constitution.

I'm totally okay with a test where the only document you need to study from is the US Constitution.