1 files changed, 7 insertions, 1 deletions
diff --git a/activemodel/test/models/contact.rb b/activemodel/test/models/contact.rb
index f9fb0af027..a9009fbdef 100644
--- a/activemodel/test/models/contact.rb
+++ b/activemodel/test/models/contact.rb
@@ -1,7 +1,13 @@
 class Contact
-  attr_accessor :name, :age, :created_at, :awesome, :preferences
+  include ActiveModel::Conversion
+
+  attr_accessor :id, :name, :age, :created_at, :awesome, :preferences
 
   def initialize(options = {})
     options.each { |name, value| send("#{name}=", value) }
   end
+
+  def persisted?
+    id
+  end
 end