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: fileasserts.rb
    path of file: ./repos/ruby/test/fileutils
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
# $Id$

module Test
  module Unit
    module FileAsserti
    
      def assert_ownership_group(expected, file)
        actual = File.stat(file).gid
        assert expected == actual, <<EOT
File group ownership of "#{file}" unexpected:
 Expected: <#{expected}>
   Actual: <#{actual}>
EOT
      end