测试环境-回形针错误

Question

我开始为应用程序编写测试，但在使测试环境正常工作时遇到困难。 我的系统有用于文件上传的Paperclip，并且在任何尝试启动服务器甚至初始化新公司记录时都会出错！举个例子：

# Company.rb line 3
has_attached_file :photo,
    :styles => {:medium => "200x300>", :thumb => "100x150>" },
    :storage => :s3,
    :s3_credentials => "#{::Rails.root.to_s}/config/s3.yml",
    :path => "/photos/:style/:id/:basename.:extension"

# console
ruby-1.9.2-p0 :001 > Company.new
NoMethodError: You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.[]=
from /Users/san/Documents/san/app/vendor/plugins/paperclip/lib/paperclip.rb:232:in 'has_attached_file'
from /Users/san/Documents/san/app/app/models/company.rb:3:in '<class:company>'
from /Users/san/Documents/san/app/app/models/company.rb:1:in '<top (required)>'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:454:in 'load'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:454:in 'block in load_file'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:591:in 'new_constants_in'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:453:in 'load_file'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:340:in 'require_or_load'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:491:in 'load_missing_constant'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:183:in 'block in const_missing'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:181:in 'each'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:181:in 'const_missing'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/aws-s3-0.6.2/lib/aws/s3/extensions.rb:206:in 'const_missing_from_s3_library'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/rake-0.9.2/lib/rake/ext/module.rb:36:in 'const_missing'
from (irb):1
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.1/lib/rails/commands/console.rb:44:in 'start'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.1/lib/rails/commands/console.rb:8:in 'start'
from /Users/san/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.1/lib/rails/commands.rb:23:in '<top (required)>'
from script/rails:6:in 'require'

你知道是什么导致了这个冲突以及我该如何解决它吗？

---

我通读了 Paperclip 文档，发现需要添加：

require 'paperclip/matchers'
Spec::Runner.configure do |config|
  config.include Paperclip::Shoulda::Matchers
end

到 spec_helper.rb。仍然遇到同样的错误！

Answer 1

我认为 s3.yml 不包含当前 Rails 环境的密钥，可能是 test ？添加一个。那应该解决它！

Answer 2

最后，通过将 Paperclip 降级到 2.3.6 修复了该错误，这是我一周前一直在使用的版本。希望这对将来遇到此错误的任何人都有帮助！