fixing tests

app/logical/post_sets/favorite.rb

@@ -2,7 +2,7 @@ module PostSets
   class Favorite < Base
     attr_reader :user, :page, :favorites
     
-    def initialize(user_id, page)
+    def initialize(user_id, page = 1)
       @user = ::User.find(user_id)
       @favorites = ::Favorite.model_for(user.id).for_user(user.id).paginate(page)
     end