Adds test for exposing root_object.
Adds test for exposing root_object.

bholzer/rabl,nesquena/rabl,bholzer/rabl,Jyaasa/rabl,nesquena/rabl,nesquena/rabl,Jyaasa/rabl,Jyaasa/rabl,infertux/rabl,sideci-sample/sideci-sample-rabl,zoyi/rabl,zoyi/rabl,sideci-sample/sideci-sample-rabl,bholzer/rabl,infertux/rabl,zoyi/rabl,infertux/rabl