Make relationship graph of AR integration tests bigger

test/fixtures/active_record.rb

@@ -6,16 +6,87 @@ ActiveRecord::Base.establish_connection(
 )
 
 ActiveRecord::Schema.define do
-  create_table :ar_profiles, :force => true do |t|
+  create_table :ar_posts, force: true do |t|
+    t.string     :title
+    t.text       :body
+    t.belongs_to :ar_section, index: true
+    t.timestamps
+  end
+
+  create_table :ar_comments, force: true do |t|
+    t.text       :body
+    t.belongs_to :ar_post, index: true
+    t.timestamps
+  end
+
+  create_table :ar_tags, force: true do |t|
     t.string :name
-    t.string :description
-    t.string :comments
+  end
+
+  create_table :ar_sections, force: true do |t|
+    t.string :name
+  end
+
+  create_table :ar_posts_tags, force: true do |t|
+    t.references :ar_post, :ar_tag, index: true
+  end
+
+  create_table :ar_comments_tags, force: true do |t|
+    t.references :ar_comment, :ar_tag, index: true
   end
 end
 
-class ARProfile < ActiveRecord::Base
+class ARPost < ActiveRecord::Base
+  has_many :ar_comments, class_name: 'ARComment'
+  has_and_belongs_to_many :ar_tags, class_name: 'ARTag'
+  belongs_to :ar_section, class_name: 'ARSection'
 end
 
-class ARProfileSerializer < ActiveModel::Serializer
-  attributes :name, :description
+class ARComment < ActiveRecord::Base
+  belongs_to :ar_post, class_name: 'ARPost'
+  has_and_belongs_to_many :ar_tags, class_name: 'ARTag'
+end
+
+class ARTag < ActiveRecord::Base
+end
+
+class ARSection < ActiveRecord::Base
+end
+
+class ARPostSerializer < ActiveModel::Serializer
+  attributes :title, :body
+
+  has_many :ar_comments, :ar_tags
+  has_one  :ar_section
+end
+
+class ARCommentSerializer < ActiveModel::Serializer
+  attributes :body
+
+  has_many :ar_tags
+end
+
+class ARTagSerializer < ActiveModel::Serializer
+  attributes :name
+end
+
+class ARSectionSerializer < ActiveModel::Serializer
+  attributes :name
+end
+
+ARPost.create(title: 'New post',
+              body:  'A body!!!',
+              ar_section: ARSection.create(name: 'ruby')).tap do |post|
+
+  short_tag = post.ar_tags.create(name: 'short')
+  whiny_tag = post.ar_tags.create(name: 'whiny')
+  happy_tag = post.ar_tags.create(name: 'happy')
+
+  post.ar_comments.create(body: 'what a dumb post').tap do |comment|
+    comment.ar_tags.concat short_tag, whiny_tag
+  end
+
+  post.ar_comments.create(body: 'i liked it').tap do |comment|
+    comment.ar_tags.concat short_tag, happy_tag
+  end
 end