You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: update_generator_test.rb
    path of file: ./repos/flipper/test_rails/generators/flipper
    
    the code of the file until where you have to start completion: require "helper"
require "generators/flipper/update_generator"

class UpdateGeneratorTest < Rails::Generators::TestCase
  tests Flipper::Generators::UpdateGenerator
  ROOT = File.ex
    
  def require_migrations
    # If these are not reloaded, then test order can cause failures
    Object.send(:remove_const, :CreateFlipperTables) if defined?(::CreateFlipperTables)
    Object.send(:remove_const, :ChangeFlipperGatesValueToText) if defined?(::ChangeFlipperGatesValueToText)

    Dir.glob("#{ROOT}/db/migrate/*.rb").each do |file|
      assert_nothing_raised do
        load file
      end
    end
  end