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_random_formatter.rb
    path of file: ./repos/truffleruby/test/mri/tests/ruby
    
    the code of the file until where you have to start completion: require 'test/unit'
require 'random/formatter'

module Random::Formatter
 
    
    def test_uuid
      uuid = @it.uuid
      assert_equal(36, uuid.size)

      # Check time_hi_and_version and clock_seq_hi_res bits (RFC 4122 4.4)
      assert_equal('4', uuid[14])
      assert_include(%w'8 9 a b', uuid[19])

      assert_match(/\A\h{8}-\h{4}-\h{4}-\h{4}-\h{12}\z/, uuid)
    end