fixtures/rails50_app/config/application.rb
require_relative 'boot'
require 'rails'
require 'active_record/railtie'
require 'rails/test_unit/railtie'
Bundler.require(*Rails.groups)
module RailsTestApp
class Application < Rails::Application
config.active_record.raise_in_transactional_callbacks = true
end
end