slightly revised test for #27348

issue_27348.rb

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", '4.2.7.1'
  gem "sqlite3", '1.3.11'
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.string :title, default: 'Default Title'
  end
end

class Post < ActiveRecord::Base
end

class BugTest < Minitest::Test
  def test_attribute_definition
    Post.create!
    Post.reset_column_information

    post = Post.last

    assert_equal 'Default Title', post.title
    assert post.class.instance_variable_get(:@attribute_methods_generated)
  end

  def test_attribute_definition_with_marshal
    dump = Marshal.dump(Post.create!)
    Post.reset_column_information

    post = Marshal.load(dump)

    assert_equal 'Default Title', post.title
  end

  def test_attribute_definition_bool_with_marshal
    dump = Marshal.dump(Post.create!)
    Post.reset_column_information

    post = Marshal.load(dump)

    refute post.class.method_defined?(:title)
    post.class.define_attribute_methods
    assert post.class.method_defined?(:title)
  end
end