Well while you’re at it, have a DUI test as well.
I assume you're being facetious, since drunk people are only impaired when they've recently been drinking.
When I moved to NY two years ago, I fully expected to be tested, at least the so called 'written' test that is really multiple guess. They just handed me a NY license when I turned over the WA one and the proper fees. The behavior of my fellow drivers proves that bad habits are not ever checked.
As for the cell phone test, I suggested allowing people who are able to do a thing that is simple for some and challenging for others (like riding a motorcycle, for example) be able to take a test to prove their ability, rather than just have their freedom completely shut down.