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: Forwardable_test.rb
    path of file: ./repos/rbs/test/stdlib
    
    the code of the file until where you have to start completion: require_relative "test_helper"
require "forwardable"

class ForwardableTest < Test::Unit::TestCase
  include TestHelper

  library "forwardable"
 
    
  def test_single_delegate
    assert_send_type "(::Hash[::Symbol, ::Symbol]) -> void",
                     @tested, :single_delegate, foo: :bar
    assert_send_type "(::Hash[::Symbol, ::Symbol]) -> void",
                     @tested, :single_delegate, foo1: :bar, foo2: :bar
    assert_send_type "(::Hash[::Array[::Symbol], ::Symbol]) -> void",
                     @tested, :single_delegate, [:foo1, :foo2] => :bar
    assert_send_type "(::Hash[(::Symbol | ::Array[::Symbol]), ::Symbol]) -> void",
                     @tested, :single_delegate, foo1: :bar, [:foo2, :foo3] => :baz
  end