Gemfile

source 'http://rubygems.org'
 
gem 'rails', github: 'rails/rails'
gem 'sqlite3'

unpublished_version.rb

require 'bundler'
Bundler.setup(:default)
 
require 'active_record'
require "minitest/autorun"
require 'minitest/pride'
 
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
 
ActiveRecord::Schema.define do
  create_table :posts, force: true do |t|
  end
  create_table :comments, force: true do |t|
    t.integer :post_id
  end
end
 
class Post < ActiveRecord::Base
  has_many :comments, inverse_of: :post
end
 
class Comment < ActiveRecord::Base
  belongs_to :post, inverse_of: :comments
end
 
class FindWithInverseOfBugTest < MiniTest::Unit::TestCase
  def setup
    @post = Post.create!
  end
 
  def test_finder_response_with_id
    assert_raises(ActiveRecord::RecordNotFound) { @post.comments.find 1 }
  end

  def test_finder_response_without_id
    assert_raises(ActiveRecord::RecordNotFound) { @post.comments.find }
  end
 
  def teardown
  end
end