1 files changed, 149 insertions, 0 deletions
diff --git a/activerecord/test/models/topic.rb b/activerecord/test/models/topic.rb
new file mode 100644
index 0000000000..03430154db
--- /dev/null
+++ b/activerecord/test/models/topic.rb
@@ -0,0 +1,149 @@
+# frozen_string_literal: true
+
+class Topic < ActiveRecord::Base
+  scope :base, -> { all }
+  scope :written_before, lambda { |time|
+    if time
+      where "written_on < ?", time
+    end
+  }
+  scope :approved, -> { where(approved: true) }
+  scope :rejected, -> { where(approved: false) }
+
+  scope :scope_with_lambda, lambda { all }
+
+  scope :by_private_lifo, -> { where(author_name: private_lifo) }
+  scope :by_lifo, -> { where(author_name: "lifo") }
+  scope :replied, -> { where "replies_count > 0" }
+
+  class << self
+    private
+      def private_lifo
+        "lifo"
+      end
+  end
+
+  scope "approved_as_string", -> { where(approved: true) }
+  scope :anonymous_extension, -> { } do
+    def one
+      1
+    end
+  end
+
+  scope :with_object, Class.new(Struct.new(:klass)) {
+    def call
+      klass.where(approved: true)
+    end
+  }.new(self)
+
+  module NamedExtension
+    def two
+      2
+    end
+  end
+
+  has_many :replies, dependent: :destroy, foreign_key: "parent_id", autosave: true
+  has_many :approved_replies, -> { approved }, class_name: "Reply", foreign_key: "parent_id", counter_cache: "replies_count"
+
+  has_many :unique_replies, dependent: :destroy, foreign_key: "parent_id"
+  has_many :silly_unique_replies, dependent: :destroy, foreign_key: "parent_id"
+
+  serialize :content
+
+  before_create  :default_written_on
+  before_destroy :destroy_children
+
+  def parent
+    Topic.find(parent_id)
+  end
+
+  # trivial method for testing Array#to_xml with :methods
+  def topic_id
+    id
+  end
+
+  alias_attribute :heading, :title
+
+  before_validation :before_validation_for_transaction
+  before_save :before_save_for_transaction
+  before_destroy :before_destroy_for_transaction
+
+  after_save :after_save_for_transaction
+  after_create :after_create_for_transaction
+
+  after_initialize :set_email_address
+
+  attr_accessor :change_approved_before_save
+  before_save :change_approved_callback
+
+  class_attribute :after_initialize_called
+  after_initialize do
+    self.class.after_initialize_called = true
+  end
+
+  attr_accessor :after_touch_called
+
+  after_initialize do
+    self.after_touch_called = 0
+  end
+
+  after_touch do
+    self.after_touch_called += 1
+  end
+
+  def approved=(val)
+    @custom_approved = val
+    write_attribute(:approved, val)
+  end
+
+  private
+
+    def default_written_on
+      self.written_on = Time.now unless attribute_present?("written_on")
+    end
+
+    def destroy_children
+      self.class.where("parent_id = #{id}").delete_all
+    end
+
+    def set_email_address
+      unless persisted? || will_save_change_to_author_email_address?
+        self.author_email_address = "test@test.com"
+      end
+    end
+
+    def before_validation_for_transaction; end
+    def before_save_for_transaction; end
+    def before_destroy_for_transaction; end
+    def after_save_for_transaction; end
+    def after_create_for_transaction; end
+
+    def change_approved_callback
+      self.approved = change_approved_before_save unless change_approved_before_save.nil?
+    end
+end
+
+class ImportantTopic < Topic
+  serialize :important, Hash
+end
+
+class DefaultRejectedTopic < Topic
+  default_scope -> { where(approved: false) }
+end
+
+class BlankTopic < Topic
+  # declared here to make sure that dynamic finder with a bang can find a model that responds to `blank?`
+  def blank?
+    true
+  end
+end
+
+class TitlePrimaryKeyTopic < Topic
+  self.primary_key = :title
+end
+
+module Web
+  class Topic < ActiveRecord::Base
+    has_many :replies, dependent: :destroy, foreign_key: "parent_id", class_name: "Web::Reply"
+  end
+end