Ralis_5_0_6_broken_size_on_counter_cache_association.rb

# frozen_string_literal: true

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

gemfile(true) do
  source 'https://rubygems.org'

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem 'rails', '5.0.6'
  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 :posts, force: true do |t|
    t.integer :comments_count
  end

  create_table :comments, force: true do |t|
    t.integer :post_id
  end
end

class Post < ActiveRecord::Base
  has_many :comments
end

class Comment < ActiveRecord::Base
  belongs_to :post, counter_cache: true
end

class BugTest < Minitest::Test
  def test_association_size
    post = Post.create!

    assert_equal 0, post.comments.size

    post.comments << Comment.create!

    assert_equal 1, post.comments.size
    assert_equal 1, Comment.size
    assert_equal post.id, Comment.first.post.id
  end

  def test_association_empty
    post = Post.create!

    assert post.comments.empty?

    post.comments << Comment.create!

    refute post.comments.empty?
  end
end