1 files changed, 43 insertions, 10 deletions

diff --git a/activerecord/test/models/comment.rb b/activerecord/test/models/comment.rb
index b38b17e90e..f0f0576709 100644
--- a/activerecord/test/models/comment.rb
+++ b/activerecord/test/models/comment.rb
@@ -1,25 +1,47 @@
+# frozen_string_literal: true
+
+# `counter_cache` requires association class before `attr_readonly`.
+class Post < ActiveRecord::Base; end
+
 class Comment < ActiveRecord::Base
-  scope :limit_by, lambda {|l| limit(l) }
+  scope :limit_by, lambda { |l| limit(l) }
   scope :containing_the_letter_e, -> { where("comments.body LIKE '%e%'") }
   scope :not_again, -> { where("comments.body NOT LIKE '%again%'") }
-  scope :for_first_post, -> { where(:post_id => 1) }
+  scope :for_first_post, -> { where(post_id: 1) }
   scope :for_first_author, -> { joins(:post).where("posts.author_id" => 1) }
   scope :created, -> { all }
 
-  belongs_to :post, :counter_cache => true
+  belongs_to :post, counter_cache: true
   belongs_to :author,   polymorphic: true
   belongs_to :resource, polymorphic: true
-  belongs_to :developer
 
   has_many :ratings
 
-  belongs_to :first_post, :foreign_key => :post_id
+  belongs_to :first_post, foreign_key: :post_id
+  belongs_to :special_post_with_default_scope, foreign_key: :post_id
+
+  has_many :children, class_name: "Comment", foreign_key: :parent_id
+  belongs_to :parent, class_name: "Comment", counter_cache: :children_count
+
+  class ::OopsError < RuntimeError; end
+
+  module OopsExtension
+    def destroy_all(*)
+      raise OopsError
+    end
+  end
+
+  default_scope { extending OopsExtension }
 
-  has_many :children, :class_name => 'Comment', :foreign_key => :parent_id
-  belongs_to :parent, :class_name => 'Comment', :counter_cache => :children_count
+  scope :oops_comments, -> { extending OopsExtension }
+
+  # Should not be called if extending modules that having the method exists on an association.
+  def self.greeting
+    raise
+  end
 
   def self.what_are_you
-    'a comment...'
+    "a comment..."
   end
 
   def self.search_by_type(q)
@@ -37,6 +59,11 @@ class Comment < ActiveRecord::Base
 end
 
 class SpecialComment < Comment
+  default_scope { where(deleted_at: nil) }
+
+  def self.what_are_you
+    "a special comment..."
+  end
 end
 
 class SubSpecialComment < SpecialComment
@@ -49,11 +76,17 @@ class CommentThatAutomaticallyAltersPostBody < Comment
   belongs_to :post, class_name: "PostThatLoadsCommentsInAnAfterSaveHook", foreign_key: :post_id
 
   after_save do |comment|
-    comment.post.update_attributes(body: "Automatically altered")
+    comment.post.update(body: "Automatically altered")
   end
 end
 
 class CommentWithDefaultScopeReferencesAssociation < Comment
-  default_scope ->{ includes(:developer).order('developers.name').references(:developer) }
+  default_scope -> { includes(:developer).order("developers.name").references(:developer) }
   belongs_to :developer
 end
+
+class CommentWithAfterCreateUpdate < Comment
+  after_create do
+    update(body: "bar")
+  end
+end