Background: Grew up in Green Bay, WI, moved to the SF Bay Area for 2 years, then lived in Reno, NV for 20 years, now I live in SoCal.
I actually studied a decent amount for the written test when I moved to SoCal, because I originally failed the CA test with no prep.
It was all for nothing. Turns out I was still in the DMV system, so they treated it as a license renewal with a 20 year gap, no test. I even have the same license number as I did 20 years ago.