晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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#--
#
# Author:: Nathaniel Talbott.
# Copyright:: Copyright (c) 2000-2002 Nathaniel Talbott. All rights reserved.
# License:: Ruby license.

require 'test/unit/util/backtracefilter'

module Test
  module Unit

    # Encapsulates an error in a test. Created by
    # Test::Unit::TestCase when it rescues an exception thrown
    # during the processing of a test.
    class Error
      include Util::BacktraceFilter

      attr_reader(:test_name, :exception)

      SINGLE_CHARACTER = 'E'

      # Creates a new Error with the given test_name and
      # exception.
      def initialize(test_name, exception)
        @test_name = test_name
        @exception = exception
      end

      # Returns a single character representation of an error.
      def single_character_display
        SINGLE_CHARACTER
      end

      # Returns the message associated with the error.
      def message
        "#{@exception.class.name}: #{@exception.message}"
      end

      # Returns a brief version of the error description.
      def short_display
        "#@test_name: #{message.split("\n")[0]}"
      end

      # Returns a verbose version of the error description.
      def long_display
        backtrace = filter_backtrace(@exception.backtrace).join("\n    ")
        "Error:\n#@test_name:\n#{message}\n    #{backtrace}"
      end

      # Overridden to return long_display.
      def to_s
        long_display
      end
    end
  end
end