Improve validation
Improve validation

With `-Unique` it's basically asking whether _any_ object in the output has the properties defined. It could have failed for 50 objects and worked for one and your test would still be green. Thanks @FriedrichWeinmann
dsolodow/dbatools,sqlpadawan/dbatools,kozloski/dbatools,SirCaptainMitch/dbatools,wsmelton/dbatools,Splaxi/dbatools