bug.rb

#!/usr/bin/env ruby

begin
	require 'bundler/inline'
rescue LoadError => e
	$stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
	raise e
end

gemfile(true) do
	source 'https://rubygems.org'
	gem 'rails', github: 'rails/rails'
	gem 'arel', github: 'rails/arel'
	gem 'rack', github: 'rack/rack'
	gem 'sprockets', github: 'rails/sprockets'
	gem 'sprockets-rails', github: 'rails/sprockets-rails'
	gem 'sass-rails', github: 'rails/sass-rails'
	gem 'sqlite3'
end

require 'active_record'
require 'minitest/autorun'
require 'logger'

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
	create_table "category", force: :cascade do |t|
	end
	
	create_table "poi_category", force: :cascade do |t|
		t.integer "poi_id",      limit: 4,                 null: false
		t.integer "category_id", limit: 4,                 null: false
	end
	
	create_table "poi", force: :cascade do |t|
	end
end

class Category < ActiveRecord::Base
	self.table_name = "category"

	has_many :poi_categories, :inverse_of => :category
	has_many :pois, :through => :poi_categories
end

class PoiCategory < ActiveRecord::Base
	self.table_name = "poi_category"
	
	belongs_to :category, inverse_of: :poi_categories
	belongs_to :poi, autosave: true, inverse_of: :poi_categories
end

class Poi < ActiveRecord::Base
	self.table_name = "poi"

	has_many :poi_categories, autosave: true, :dependent => :destroy
	has_many :categories, through: :poi_categories
	
	attr_accessor :sequence
	
	after_create {|record| sequence << :after_create }
	after_update {|record| sequence << :after_update }
	after_save {|record| sequence << :after_save }
end

class BugTest < Minitest::Test
	def test_association_stuff
		category = Category.create
		
		poi = Poi.new
		poi.sequence = []
		
		poi.categories << category 
		
		poi.save
		
		assert_equal poi.sequence, [:after_create, :after_save]
	end
end