class Minitest::Reporters::HtmlReporter

def total_time_to_hms
  return ('%.2fs' % total_time) if total_time < 1
  hours = (total_time / (60 * 60)).round
  minutes = ((total_time / 60) % 60).round.to_s.rjust(2, '0')
  seconds = (total_time % 60).round.to_s.rjust(2, '0')
  "#{hours}h#{minutes}m#{seconds}s"
end