lib/cards_lib/card.rb in cards_lib-0.0.2 vs lib/cards_lib/card.rb in cards_lib-0.0.3

@@ -1,11 +1,16 @@
 module CardsLib
   class Card
     def initialize(face)
+      raise InvalidCardFace, "face cannot be blank" if face.to_s.empty?
       @face = face
     end
 
     def face
       @face   
     end
+  end
+
+  class InvalidCardFace < Exception
+
   end
 end