ActiveAdmin / Rspec-ActionView :: Template :: Error（nil：NilClass的未定义方法“ action_methods”）

我最近将测试从使用Cucumber / Capybara转换为Rspec / Capybara。我正在使用ActiveAdmin。当我使用Cucumber对ActiveAdmin运行测试时，测试运行，一切都通过了。使用Rspec运行测试时，我收到：

Rendered /home/vagrant/.rvm/gems/ruby-2.0.0-p451/bundler/gems/active_admin-d11c0a56504a/app/views/active_admin/resource/index.html.arb (210.6ms)
Completed 500 Internal Server Error in 244ms

ActionView::Template::Error (undefined method `action_methods' for nil:NilClass):
    1: insert_tag renderer_for(:index)
  authlogic (3.4.2) lib/authlogic/controller_adapters/abstract_adapter.rb:63:in `method_missing'
  /home/vagrant/.rvm/gems/ruby-2.0.0-p451/bundler/gems/active_admin-d11c0a56504a/lib/active_admin/resource/action_items.rb:55:in `block in add_default_action_items'
  /home/vagrant/.rvm/gems/ruby-2.0.0-p451/bundler/gems/active_admin-d11c0a56504a/lib/active_admin/views/action_items.rb:9:in `instance_exec'
  /home/vagrant/.rvm/gems/ruby-2.0.0-p451/bundler/gems/active_admin-d11c0a56504a/lib/active_admin/views/action_items.rb:9:in `block (2 levels) in build'
  arbre (1.0.1) lib/arbre/element/builder_methods.rb:31:in `block in build_tag'
  arbre (1.0.1) lib/arbre/context.rb:92:in `with_current_arbre_element'
  arbre (1.0.1) lib/arbre/element/builder_methods.rb:49:in `with_current_arbre_element'
  arbre (1.0.1) lib/arbre/element/builder_methods.rb:26:in `build_tag'
  arbre (1.0.1) lib/arbre/element/builder_methods.rb:39:in `insert_tag'
  arbre (1.0.1) lib/arbre/element/builder_methods.rb:14:in `span'

那只是回溯的十行。实际上更大。让我知道是否应该粘贴。

导致此错误的rspec有何不同？

我正在使用rspec（2.14.1），activeadmin（master），ruby（2.0），rails（4.1.1）。

谢谢。

更新

这是我的activeadmin资源：

ActiveAdmin.register UserPermission, :as => 'Support User' do
  config.batch_actions = false
  config.clear_action_items!
  config.filters = false

  actions :new, :create, :index, :destroy  

  action_item only: [:index] do
    link_to 'Add Support User', new_admin_support_user_path
  end

  controller do
    def scoped_collection
      UserPermission.where(permission: 'support')
    end

    def destroy
      begin
        permission = UserPermission.find_by_id_and_permission!(
        params[:id], UserPermission::SUPPORT)
        permission.destroy if permission.present?
        redirect_to admin_support_users_path, notice: 'Support user removed.'
      rescue ActiveRecord::RecordNotFound
        redirect_to admin_support_users_path, alert: 'Support user not found.'
      end
    end

    def create
      user = User.find_by_email(params[:email])
      if user
        UserPermission.create(:user_id => user.id,
          :permission => UserPermission::SUPPORT,
          :creator => current_user)
        redirect_to admin_support_users_path, notice: 'Support user added.'
      else
        redirect_to new_admin_support_user_path, alert: 'User not found'
      end
    end
  end

  form partial: "form"

  index :download_links => false do
    column :email do |permission|
      permission.user.email
    end
    column :created_by do |permission|
      if permission.created_by.present?
        u = User.find_by_id(permission.created_by)
        u.email 
      end
    end
    column :created_at
    actions
  end

  menu :parent => 'Users', :priority => 1

end