capybara nokogiri system/request test debugging

module RequestTestHelpers
  def turbo_stream_page
    # turbo_stream wraps response in <template> tag, Capybara ignore template tags
    template_content =  Nokogiri::HTML(response.body).css('turbo-stream template').inner_html
    Capybara.string(template_content)
  end

  def follow_redirects_until_finished!
    while response.status == 302 || response.status == 301
      follow_redirect!
    end
  end

  # just debugging to show the HTML of the response
  def _xx(css='body')
    puts Nokogiri::HTML(body).css(css).to_xhtml(indent: 2)
  end
end

Important

Nokogiri(response.body).css('template').inner_html

is different than

Nokogiri::HTML(response.body).css('turbo-stream template')

Former will not work if response reply with multiple template updates (multiple turbo_stream.update in turbo_stream.erb.file)