3 files changed, 11 insertions, 0 deletions
diff --git a/activerecord/test/models/author.rb b/activerecord/test/models/author.rb
index 727978431c..34bfd2d881 100644
--- a/activerecord/test/models/author.rb
+++ b/activerecord/test/models/author.rb
@@ -93,6 +93,9 @@ class Author < ActiveRecord::Base
   belongs_to :author_address, :dependent => :destroy
   belongs_to :author_address_extra, :dependent => :delete, :class_name => "AuthorAddress"
 
+  scope :relation_include_posts, includes(:posts)
+  scope :relation_include_tags, includes(:tags)
+
   attr_accessor :post_log
   after_initialize :set_post_log
 
diff --git a/activerecord/test/models/car.rb b/activerecord/test/models/car.rb
index 1101180a67..faf4e6cbc0 100644
--- a/activerecord/test/models/car.rb
+++ b/activerecord/test/models/car.rb
@@ -1,4 +1,9 @@
 class Car < ActiveRecord::Base
+  has_many :tyres
   has_many :engines
   has_many :wheels, :as => :wheelable
+
+  scope :incl_tyres, includes(:tyres)
+  scope :incl_engines, includes(:engines)
+
 end
diff --git a/activerecord/test/models/tyre.rb b/activerecord/test/models/tyre.rb
new file mode 100644
index 0000000000..bc3444aa7d
--- /dev/null
+++ b/activerecord/test/models/tyre.rb
@@ -0,0 +1,3 @@
+class Tyre < ActiveRecord::Base
+  belongs_to :car
+end