lib/swedish_pin/personnummer.rb in swedish-pin-1.0.0 vs lib/swedish_pin/personnummer.rb in swedish-pin-1.1.0

@@ -6,10 +6,12 @@
   #
   # Determine if this is a _Personnummer_ or a _Samordningsnummer_ using {coordination_number?}.
   #
   # @see https://en.wikipedia.org/wiki/Personal_identity_number_(Sweden) Personnummer on Wikipedia.
   class Personnummer
+    include Comparable
+
     attr_reader :year, :month, :day, :sequence_number, :control_digit
     # @!attribute [r] year
     #   The full year of the _personnummer_. For example +1989+.
     #   @return [Integer]
     # @!attribute [r] month
@@ -172,9 +174,30 @@
     # identified as +female+.
     # @return [true, false]
     def female?
       sequence_number.even?
     end
+
+    def ==(other)
+      if other.is_a?(self.class)
+        format_long == other.format_long
+      else
+        super
+      end
+    end
+
+    def <=>(other)
+      if other.is_a?(self.class)
+        format_long <=> other.format_long
+      else
+        super
+      end
+    end
+
+    def hash
+      [self.class, format_long].hash
+    end
+    alias_method :eql?, :==
 
     private
 
     def short_separator(now)
       if year <= (now.year - 100)