From 7072e797879da87d260e0122ca186ba790c79429 Mon Sep 17 00:00:00 2001
From: twinturbo <me@broadcastingadam.com>
Date: Sun, 15 Jul 2012 12:18:41 +0200
Subject: [PATCH] Close #90

---
 lib/active_model_serializers.rb | 2 ++
 test/serializer_test.rb         | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/lib/active_model_serializers.rb b/lib/active_model_serializers.rb
index 18679652..55cca1f1 100644
--- a/lib/active_model_serializers.rb
+++ b/lib/active_model_serializers.rb
@@ -3,6 +3,7 @@ require "active_support/core_ext/string/inflections"
 require "active_support/notifications"
 require "active_model"
 require "active_model/serializer"
+require "set"
 
 if defined?(Rails)
   module ActiveModel
@@ -63,6 +64,7 @@ module ActiveModel::ArraySerializerSupport
 end
 
 Array.send(:include, ActiveModel::ArraySerializerSupport)
+Set.send(:include, ActiveModel::ArraySerializerSupport)
 
 ActiveSupport.on_load(:active_record) do
   ActiveRecord::Relation.send(:include, ActiveModel::ArraySerializerSupport)
diff --git a/test/serializer_test.rb b/test/serializer_test.rb
index 288af48a..f740de59 100644
--- a/test/serializer_test.rb
+++ b/test/serializer_test.rb
@@ -434,6 +434,10 @@ class SerializerTest < ActiveModel::TestCase
     ], serializer.as_json)
   end
 
+  def test_sets_use_an_array_serializer
+    assert_equal Set.new.active_model_serializer, ActiveModel::ArraySerializer
+  end
+
   class CustomBlog < Blog
     attr_accessor :public_posts, :public_user
   end