5 files changed, 18 insertions, 0 deletions
diff --git a/activerecord/test/models/comment.rb b/activerecord/test/models/comment.rb
index 7a88299d08..b38b17e90e 100644
--- a/activerecord/test/models/comment.rb
+++ b/activerecord/test/models/comment.rb
@@ -52,3 +52,8 @@ class CommentThatAutomaticallyAltersPostBody < Comment
     comment.post.update_attributes(body: "Automatically altered")
   end
 end
+
+class CommentWithDefaultScopeReferencesAssociation < Comment
+  default_scope ->{ includes(:developer).order('developers.name').references(:developer) }
+  belongs_to :developer
+end
diff --git a/activerecord/test/models/company.rb b/activerecord/test/models/company.rb
index 76411ecb37..42f7fb4680 100644
--- a/activerecord/test/models/company.rb
+++ b/activerecord/test/models/company.rb
@@ -10,6 +10,7 @@ class Company < AbstractCompany
   has_one :dummy_account, :foreign_key => "firm_id", :class_name => "Account"
   has_many :contracts
   has_many :developers, :through => :contracts
+  has_many :accounts
 
   scope :of_first_firm, lambda {
     joins(:account => :firm).
diff --git a/activerecord/test/models/person.rb b/activerecord/test/models/person.rb
index c7e54e7b63..ad12f00d42 100644
--- a/activerecord/test/models/person.rb
+++ b/activerecord/test/models/person.rb
@@ -30,6 +30,8 @@ class Person < ActiveRecord::Base
   has_many :agents_of_agents, :through => :agents, :source => :agents
   belongs_to :number1_fan, :class_name => 'Person'
 
+  has_many :personal_legacy_things, :dependent => :destroy
+
   has_many :agents_posts,         :through => :agents,       :source => :posts
   has_many :agents_posts_authors, :through => :agents_posts, :source => :author
   has_many :essays, primary_key: "first_name", foreign_key: "writer_id"
diff --git a/activerecord/test/models/personal_legacy_thing.rb b/activerecord/test/models/personal_legacy_thing.rb
new file mode 100644
index 0000000000..a7ee3a0bca
--- /dev/null
+++ b/activerecord/test/models/personal_legacy_thing.rb
@@ -0,0 +1,4 @@
+class PersonalLegacyThing < ActiveRecord::Base
+  self.locking_column = :version
+  belongs_to :person, :counter_cache => true
+end
diff --git a/activerecord/test/models/post.rb b/activerecord/test/models/post.rb
index 56a31011da..256b720c9a 100644
--- a/activerecord/test/models/post.rb
+++ b/activerecord/test/models/post.rb
@@ -218,3 +218,9 @@ class PostThatLoadsCommentsInAnAfterSaveHook < ActiveRecord::Base
     post.comments.load
   end
 end
+
+class PostWithCommentWithDefaultScopeReferencesAssociation < ActiveRecord::Base
+  self.table_name = 'posts'
+  has_many :comment_with_default_scope_references_associations, foreign_key: :post_id
+  has_one :first_comment, class_name: "CommentWithDefaultScopeReferencesAssociation", foreign_key: :post_id
+end