How, in go, to determine the type of an interface which type is struct?

Question

go

Need help with reflect.
It's easier to show the code than to explain: https://play.golang.org/p/bH45-LCyp7
here I need to see not an empty string, but the TEST type.
Thank you.

Answer 1

Unfortunately, this is not possible, v is a synonym for TEST, but two types of structures are created during compilation: v and TEST.