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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DIR:/opt/alt/ruby19/lib64/ruby/1.9.1/rubygems/
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Current File : //opt/alt/ruby19/lib64/ruby/1.9.1/rubygems/installer_test_case.rb
require 'rubygems/test_case'
require 'rubygems/installer'

class Gem::Installer

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :gem_dir

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :format

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :gem_home

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :env_shebang

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :ignore_dependencies

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :format_executable

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :security_policy

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :spec

  ##
  # Available through requiring rubygems/installer_test_case

  attr_writer :wrappers
end

##
# A test case for Gem::Installer.

class Gem::InstallerTestCase < Gem::TestCase

  def setup
    super

    @installer_tmp = File.join @tempdir, 'installer'
    FileUtils.mkdir_p @installer_tmp

    Gem.use_paths @installer_tmp
    Gem.ensure_gem_subdirectories @installer_tmp

    @spec = quick_gem 'a'
    util_make_exec @spec
    util_build_gem @spec
    @gem = @spec.cache_file

    @user_spec = quick_gem 'b'
    util_make_exec @user_spec
    util_build_gem @user_spec
    @user_gem = @user_spec.cache_file

    Gem.use_paths @gemhome

    @installer      = util_installer @spec, @gemhome
    @user_installer = util_installer @user_spec, Gem.user_dir, :user

    Gem.use_paths @gemhome
  end

  def util_gem_bindir spec = @spec
    # TODO: deprecate
    spec.bin_dir
  end

  def util_gem_dir spec = @spec
    # TODO: deprecate
    spec.gem_dir
  end

  def util_inst_bindir
    File.join @gemhome, "bin"
  end

  def util_make_exec(spec = @spec, shebang = "#!/usr/bin/ruby")
    spec.executables = %w[executable]
    spec.files << 'bin/executable'

    exec_path = spec.bin_file "executable"
    write_file exec_path do |io|
      io.puts shebang
    end

    bin_path = File.join @tempdir, "bin", "executable"
    write_file bin_path do |io|
      io.puts shebang
    end
  end

  def util_setup_gem(ui = @ui) # HACK fix use_ui to make this automatic
    @spec.files << File.join('lib', 'code.rb')
    @spec.extensions << File.join('ext', 'a', 'mkrf_conf.rb')

    Dir.chdir @tempdir do
      FileUtils.mkdir_p 'bin'
      FileUtils.mkdir_p 'lib'
      FileUtils.mkdir_p File.join('ext', 'a')
      File.open File.join('bin', 'executable'), 'w' do |f|
        f.puts "raise 'ran executable'"
      end
      File.open File.join('lib', 'code.rb'), 'w' do |f| f.puts '1' end
      File.open File.join('ext', 'a', 'mkrf_conf.rb'), 'w' do |f|
        f << <<-EOF
          File.open 'Rakefile', 'w' do |rf| rf.puts "task :default" end
        EOF
      end

      use_ui ui do
        FileUtils.rm @gem

        @gem = Gem::Builder.new(@spec).build
      end
    end

    @installer = Gem::Installer.new @gem
  end

  def util_installer(spec, gem_home, user=false)
    Gem::Installer.new spec.cache_file, :user_install => user
  end
end