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_lock_command.rb
    path of file: ./repos/truffleruby/test/mri/tests/rubygems
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
require_relative "helper"
require "rubygems/commands/lock_command"

class TestGemCommandsLockCommand < Gem::TestCase
  def setup
    super

    @a1 = quick_gem "a", "1"
    @b1 = quick_gem "b", "1" do |s|
    
    
  def test_execute_missing_dependency
    @cmd.handle_options %w[d-1]

    use_ui @ui do
      @cmd.execute
    end

    expected = <<-EXPECTED
require 'rubygems'
gem 'd', '= 1'
# Unable to satisfy 'z (>= 0)' from currently installed gems
    EXPECTED

    assert_equal expected, @ui.output
    assert_equal "", @ui.error
  end