RSC CanCan的Rails初学测试问题

Question

我目前使用canpec和rspec。

/请看看我的ability.rb

require 'spec_helper' 
require "cancan/matchers" 

class Ability 

    include CanCan::Ability 

    def initialize(user) 
    if user  # Only logged in users 
     if user.role? :admin 
     can :manage, :all 

     elsif user.role? :producer 
     can :read, Business 
     can :update, Business do |b| 
      b.user_id == user.id 
     end 
     can :redeem, Purchase 

     elsif user.role? :consumer 
     can :your, Deal 
     can [:create, :redirect_to_wepay], Purchase 
     can :show, Purchase do |purchase| 
      purchase.user_id == user.id 
     end 
     end 

     # Good thing about devise with Cancan is that it takes care of this. 
     can :manage, User do |the_user| 
     the_user.id == user.id 
     end 

    else 
     # This is needed for the cans that follows 
     user = User.new 

    end 

    # Everyone's session 
    can :read, Deal 
    can :read, Business 

    # You have to enable it for wepay 
    can [:sold_out, :callback, :received], Purchase 

    end 
end 

在我的规格/型号ability_spec.rb我

describe Ability do 

    describe "consumers" do 
    describe "cancan" do 
     before(:each) do 
     @user = Factory(:user, :role => "consumer") 
     @ability = Ability.new(@user) 
     end 

     describe "success" do 
     #**This line I am getting ability is nil 
     @ability.should == 5 

     #**This line gives me be_able_to undefined 
     #@ability.should_not be_able_to(:read, Factory(:deal)) 

     #@ability.can(:read, Factory(:business)).should be_true 
     end 

任何想法，为什么我得到@ability作为零？

另外，我想在这个ability_spec.rb文件中放置一些与权限控制相关的控制器操作。那可能吗？ （我明确要实现这一点，因为我的应用程序有用户3个角色，我发现自己乱扔我控制器符合规范与所有这些许可相关的一个衬垫的文件。

谢谢！

Answer 1

测试必须出现在it或specify块。describe和context只是用于分组

describe "success" do 
    #**This line I am getting ability is nil 
    @ability.should == 5 
end

应该更像：

it "allows consumers to do blah blah blah" do 
    @ability.should == 5 
end