为什么这个RSpec存根不起作用？

Question

我创建了一个rspec测试，如下所示：

    it "should redirect to '/tavern' with an error if user already has a tavern quest" do
        user = mock('User')
        user.stub(:has_tavern_quest).and_return(true)
        post :new_quest, :quest_type => 3
        flash[:error].should_not be_nil
        response.should redirect_to tavern_path
    end

然后，我编写了控制器部分：

# check if user already has a tavern quest
if current_user.has_tavern_quest?
    flash[:error] = 'You already have a quest to finish !'
    redirect_to tavern_path and return 
end 

和模型部分：

  def has_tavern_quest?
    TavernQuest.exists?(self.id)
  end   

我希望测试成功，但是现在我得到了：

  1) TavernController POST '/quest/' to get a new quest of quest_type == 3 should redirect to '/tavern' with an error if user already has a tavern quest
     Failure/Error: flash[:error].should_not be_nil
       expected: not nil
            got: nil
     # ./spec/controllers/tavern_controller_spec.rb:29

我是不是搞错了？

登录用户的宏：

module ControllerMacros
  def login_user
    before(:each) do
      @request.env["devise.mapping"] = :user
      @user = Factory.create(:user)
      sign_in @user
    end
  end
end

Answer 1

未经测试：

it "should redirect to '/tavern' with an error if user already has a tavern quest" do
  controller.stub_chain(:current_user,:has_tavern_quest?).and_return(true)
  post :new_quest, :quest_type => 3
  flash[:error].should_not be_nil
  response.should redirect_to tavern_path
end

Answer 2

你的嘲笑什么也做不了..。也许你是想在什么地方用它？

我个人不喜欢在这种情况下嘲笑，觉得这是一种混淆。如果你使用的是Devise，你可以使用their test helpers to sign in as a user。