必须是ruby1.8.x的版本，我用的是1.8.6，因为1.9的版本里边没有这个文件，文件路径为到ruby的安装目录下的/test/unit/testcase.rb路径下
def run(result)
        yield(STARTED， name)
        @_result = result
        begin
          setup
             puts "Test method:#{self}"
             num="#{self}".scan(/d{1}/)[1]
              puts "this is the #{num} testcase"
             #puts "this is the d{1，} testcase"
          time=Time.now
          __send__(@method_name)
                      difference = Time.now - time
    seconds    =  difference % 60
    #sec=seconds.to_s.scan(/d*/)[0]
    sec=seconds.round
    difference = (difference - seconds) / 60
    minutes    =  (difference % 60).round
    difference = (difference - minutes) / 60
    hours      =  (difference % 24).round

    puts "Runtime is: #{hours} hours #{minutes} minutes #{sec} seconds"
        rescue AssertionFailedError => e
          add_failure(e.message， e.backtrace)
        rescue StandardError， ScriptError
          add_error($!)
        ensure
          begin
            teardown
          rescue AssertionFailedError => e
            add_failure(e.message， e.backtrace)
          rescue StandardError， ScriptError
            add_error($!)
          end
        end
        result.add_run
        yield(FINISHED， name)
      end