add test for validate raising error when not in sync.
add test for validate raising error when not in sync.

eljojo/reform,Miralaw/reform,apotonick/reform,francirp/reform,bolshakov/reform,simonc/reform,mipearson/reform,prosanelli/reform,halan/reform,swifthand/reform,bolshakov/reform,prosanelli/reform,eljojo/reform,Miralaw/reform,halan/reform,francirp/reform,mipearson/reform,trailblazer/reform,swifthand/reform