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_gem_commands_unpack_command.rb
    path of file: ./repos/jruby/test/mri/rubygems
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require_relative 'helper'
require 'rubygems/commands/unpack_command'

class TestGemCommandsUnpackCommand < Gem::TestCase
  def
    
  def test_execute_spec
    util_make_gems

    @cmd.options[:args] = %w[a b]
    @cmd.options[:spec] = true

    use_ui @ui do
      Dir.chdir @tempdir do
        @cmd.execute
      end
    end

    assert File.exist?(File.join(@tempdir, 'a-3.a.gemspec'))
    assert File.exist?(File.join(@tempdir, 'b-2.gemspec'))
  end