cell.rb

     # Raise an exception in caller context, but stay running
     def abort(cause)
       cause = case cause
         when String then RuntimeError.new(cause)
         when Exception then cause
         else raise "Unknown abort cause class #{cause.class} for object #{cause.inspect}"
       end
       raise AbortError.new(cause)
     end
   

spec.rb

       it "crashes the caller if we pass neither String nor Exception" do
         actor = actor_class.new "Al Pacino"
         expect do
           actor.crash_with_abort_raw 10
         end.to raise_exception(RuntimeError)
   
         actor.should_not be_alive
       end