Ruby on rails 4 ActionDispatch env的nil值[env_SESSION_OPTIONS_KEY]

我正在尝试运行一个capybara cookie特性规范，当我调用

visit[URL]

方法时，堆栈跟踪会给出以下错误

Failures:

  1) Cookie Configuration writes cookies
     Failure/Error: visit('/cookies')
     NoMethodError:
       undefined method `[]=' for nil:NilClass
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/actionpack-4.0.13/lib/action_dispatch/request/session.rb:169:in `load!'
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/actionpack-4.0.13/lib/action_dispatch/request/session.rb:164:in `load_for_write!'
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/actionpack-4.0.13/lib/action_dispatch/request/session.rb:153:in `merge!'
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/actionpack-4.0.13/lib/action_dispatch/request/session.rb:13:in `create'
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/actionpack-4.0.13/lib/action_dispatch/middleware/session/abstract_store.rb:69:in `prepare_session'
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/rack-1.5.3/lib/rack/session/abstract/id.rb:224:in `context'
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/rack-1.5.3/lib/rack/session/abstract/id.rb:220:in `call'
     # /Users/amat/.rbenv/versions/2.1.6/lib/ruby/gems/2.1.0/gems/actionpack-4.0.13/lib/action_dispatch/middleware/cookies.rb:486:in `call'

我怀疑问题的一部分在于

actionpack-4.0.13/lib/action\u dispatch/request/session.rb

我们有以下代码：

def self.find(env)
  env[ENV_SESSION_OPTIONS_KEY]
end

这将返回

nil

，因为我猜env[env\u SESSION\u OPTIONS\u KEY]没有设置。因为它在调用时返回

nil

：

def load!
   id, session = @by.load_session @env
   options[:id] = id
   @delegate.replace(stringify_keys(session))
   @loaded = true
end

options[：id]

给出了上面堆栈跟踪中看到的错误

这是我在测试中必须手动存根的东西吗？是否有我可能缺少的配置

编辑：如果您想查看等级库代码，它非常简单：

require 'spec_helper'

describe 'Cookie Configuration', type: :feature do
  it 'writes cookies' do
    visit('/cookies')
    ..
  end
end

---

您的测试环境的cookie存储配置是什么？在虚拟应用程序中，我在

config/initializers/secret\u-key\u-base=[secret]

的

config/initializers/secret\u-token.rb

和

session\u-store.rb

中设置了

cookie\u-store