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_internal.rb
    path of file: ./repos/thinreports-generator/test/basic_report/units/report
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'test_helper'

class Thinreports::BasicReport::Report::TestInternal < Minitest::Test
  include Thinreports::BasicReport::TestHelper

  Report = Thinreports::BasicReport::Report

  def setup
    @layout_file = layout_file
  end


    
  def test_add_page_should_add_the_initialized_page
    layout = Thinreports::BasicReport::Layout.new(@layout_file.path)
    new_page = Thinreports::BasicReport::Report::Page.new(report, layout)

    internal = Report::Internal.new(report, layout: @layout_file.path)
    internal.add_page(new_page)

    assert_same new_page, internal.pages.last
  end