lib/iz/credit_card.rb in iz-0.0.1 vs lib/iz/credit_card.rb in iz-0.1.0

@@ -1,19 +1,20 @@
 module Iz
   class CreditCard
     REGEX = /^(?:(4[0-9]{12}(?:[0-9]{3})?)|(5[1-5][0-9]{14})|(6(?:011|5[0-9]{2})[0-9]{12})|(3[47][0-9]{13})|(3(?:0[0-5]|[68][0-9])[0-9]{11})|((?:2131|1800|35[0-9]{3})[0-9]{11}))$/
 
-    attr_accessor :number
+    attr_accessor :value
 
     def initialize(credit_card_number)
-      self.number = credit_card_number
+      self.value = credit_card_number
     end
 
     def valid?
-      Iz::CreditCard.is_credit_card?(number)
+      !!Iz::CreditCard.is_credit_card?(value)
     end
 
-    def self.is_credit_card?(number)
-      number.to_s =~ REGEX
+    def self.is_credit_card?(value)
+      return false unless value
+      value.to_s =~ REGEX
     end
   end
 end