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: test_store.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/test/yaml
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require 'test/unit'
require 'yaml/store'
require 'tmpdir'

class YAMLStoreTest < Test::Unit::TestCase
  de
    
  def test_data_should_be_loaded_correctly_when_in_readonly_mode
    @yaml_store.transaction do
      @yaml_store[:foo] = "bar"
    end
    @yaml_store.transaction(true) do
      assert_equal "bar", @yaml_store[:foo]
    end
  end