Question

begin-rescue中的hooks.rb块下方无效。当有＆＃34;结果＆＃34;目录可用，它转到rescue块，当它不到时，它转到begin块。听起来很有趣，但这就是发生的事情。

现在当我在单独的ruby文件中使用相同的begin-rescue时，它就像魅力一样。当目录可用时运行begin，而当目录不可用时运行rescue。

告诉你＆＃34;结果＆＃34;测试完成后出现的目录，因为我正在使用pretty_face gem。它有几个子目录，如＆＃34;图像＆＃34;和＆＃34;样式表＆＃34;。

hooks.rb

require 'fileutils'


def delete_results
  FileUtils.remove_dir(File.join(File.absolute_path('../..', File.dirname(__FILE__)),"results"))
end


  Before do
    begin
      delete_results
    rescue
      puts "cant delete results dir or it doesnt exist"
    end
  end

我也在单独的ruby文件中尝试过，它始终有效：的 delete_dir.rb

require 'fileutils'

begin
  FileUtils.remove_dir(File.join(File.absolute_path('../..', File.dirname(__FILE__)),"results"))
rescue
  puts "cant delete results dir or it doesnt exist"
end

当dir存在时出错但挂钩中的begin阻止.rb无法正常工作

File exists - results\images (Errno::EEXIST)
C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:247:in `mkdir'
C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:247:in `fu_mkdir'
C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:221:in `block (2 levels) in mkdir_p'
C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:219:in `reverse_each'
C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:219:in `block in mkdir_p'
C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:205:in `each'
C:/Ruby193/lib/ruby/1.9.1/fileutils.rb:205:in `mkdir_p'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/pretty_face-0.10.3/lib/pretty_face/formatter/html.rb:188:in `make_directory'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/pretty_face-0.10.3/lib/pretty_face/formatter/html.rb:182:in `make_output_directories'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/pretty_face-0.10.3/lib/pretty_face/formatter/html.rb:63:in `before_features'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/lib/cucumber/ast/tree_walker.rb:181:in `block in send_to_all'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/lib/cucumber/ast/tree_walker.rb:179:in `each'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/lib/cucumber/ast/tree_walker.rb:179:in `send_to_all'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/lib/cucumber/ast/tree_walker.rb:169:in `broadcast'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/lib/cucumber/ast/tree_walker.rb:20:in `visit_features'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/lib/cucumber/runtime.rb:49:in `run!'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/lib/cucumber/cli/main.rb:47:in `execute!'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/cucumber-1.3.17/bin/cucumber:13:in `<top (required)>'
C:/Ruby193/bin/cucumber:23:in `load'
C:/Ruby193/bin/cucumber:23:in `<top (required)>'
-e:1:in `load'
-e:1:in `<main>'

Process finished with exit code 1
Empty test suite.

错误即将发生，因为由于某些原因（我不知道），它无法删除目录，因为＆＃34;图像＆＃34;和＆＃34;样式表＆＃34; subdir存在于＆＃34;结果＆＃34; DIR。所以我手动删除了它们，以便begin阻止工作。现在上面的错误不存在，它跳过begin块并转到rescue块并打印＆＃34;无法删除结果dir或它不存在＆＃34;虽然＆＃34;结果＆＃34; dir在那里。

Ruby：开始救援块不能正常工作

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