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_xslt_transforms.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/nokogiri-1.8.0/test
    
    the code of the file until where you have to start completion: require "helper"

class TestXsltTransforms < Nokogiri::TestCase
  def setup
    @doc = Nokogiri::XML(File.open(XML_FILE))
  end

  def test_class_methods
    style = Nokogiri::XSLT(File.read(XSLT_FILE))

    assert result = style.apply_to(@doc, ['title', '"Grandma"'])
    assert_match %r{<h1>Grandma</h1>}, result
  end

  def tes
    
  def test_transform2
    assert style = Nokogiri::XSLT(File.open(XSLT_FILE))
    assert result_doc = style.transform(@doc)
    assert result_doc.html?
    assert_equal "", result_doc.at_css("h1").content

    assert style = Nokogiri::XSLT(File.read(XSLT_FILE))
    assert result_doc = style.transform(@doc, ['title', '"Booyah"'])
    assert result_doc.html?
    assert_equal "Booyah", result_doc.at_css("h1").content

    assert result_string = style.apply_to(@doc, ['title', '"Booyah"'])
    assert_equal result_string, style.serialize(result_doc)
  end