destroyed_at_bug.rb

unless File.exist?('Gemfile')
  File.write('Gemfile', <<-GEMFILE)
    source 'https://rubygems.org'
    gem 'rails', '4.1.7' 
    gem 'destroyed_at'
    gem 'sqlite3'
  GEMFILE

  system 'bundle'
end

require 'bundler'
Bundler.setup(:default)

require 'active_record'
require 'active_support/all'
require 'minitest/autorun'
require 'logger'
require 'destroyed_at'

# Ensure backward compatibility with Minitest 4
Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)

ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)

# Schema
ActiveRecord::Schema.define do
  
  ActiveRecord::Base.connection.create_table(:posts) do |t|
  end

  ActiveRecord::Base.connection.create_table(:authors) do |t|
    t.integer :post_id
  end
end

# Models
class Post < ActiveRecord::Base
  has_one :author, dependent: :destroy
end

class Author < ActiveRecord::Base
  belongs_to :post
end


# The actual test
class BugTest < Minitest::Test

  def test_has_one_dependent_destory
    post = Post.create!
    author = post.create_author!
    
    post.destroy

    assert_equal(0, Post.count)
    assert_equal(0, Author.count)
  end

end