support future date

lib/restfulie/server/atom_media_type.rb

@@ -37,7 +37,7 @@ def to_atom
   def updated_at
     last = Time.now
     each do |item|
-      last = item.updated_at if item.respond_to? :updated_at && item.updated_at > last
+      last = item.updated_at if item.respond_to?(:updated_at) && item.updated_at > last
     end
     last
   end

spec/server/atom_media_type_spec.rb

@@ -54,11 +54,31 @@ class City
   end
 
   context "while checking the last modified date from an array" do
+
+    class Item
+      def initialize(time)
+        @updated_at = time
+      end
+      attr_reader :updated_at
+    end
+
+    before do
+      @now = Time.now
+      Time.should_receive(:now).and_return(@now)
+    end
+
     it "should return now if there are no items" do
-      now = Time.now
-      Time.should_receive(:now).and_return(now)
-      [].updated_at.should eql(now)
+      [].updated_at.should eql(@now)
+    end
+
+    it "should return now if the items dont answer to updated_at" do
+      ["first", "second"].updated_at.should eql(@now)
+    end
+
+    it "should return a date in the future if an item has such date" do
+      [Item.new(@now + 100)].updated_at.should eql(@now+100)
     end
+
   end
 
 end