# File lib/autotest.rb, line 471
  def path_to_classname s
    sep = File::SEPARATOR
    f = s.sub(/^test#{sep}/, '').sub(/\.rb$/, '').split sep
    f = f.map { |path| path.split(/_|(\d+)/).map { |seg| seg.capitalize }.join }
    f = f.map { |path| path =~ /^Test/ ? path : "Test#{path}"  }

    f.join '::'
  end