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: TrueClass_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"

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

  testing '::TrueClass'

  def test_not
    assert_send_type "() -> false",
                     
    
  def test_or
    assert_send_type "(true) -> true",
                     true, :|, true
    assert_send_type "(nil) -> true",
                     true, :|, nil
    assert_send_type "(false) -> true",
                     true, :|, false
    assert_send_type "(untyped) -> true",
                     true, :|, Object.new
  end