ruby-on-rails - 如何测试 after_sign_in_path_for(resource)？

Question

我在 Rails 应用程序上设置了身份验证和注册。我使用 after_sign_in_path_for() 根据各种场景自定义用户登录时的重定向。

我想问的是如何测试这个方法？似乎很难隔离，因为它是在用户登录时由 Devise 自动调用的。我想做这样的事情:

describe ApplicationController do
  describe "after_sign_in_path_for" do
    before :each do
      @user = Factory :user
      @listing = Factory :listing
      sign_in @user
    end

    describe "with listing_id on the session" do
      before :each do
        session[:listing_id] = @listing.id
      end

      describe "and a user in one team" do
        it "should save the listing from the session" do
          expect {
            ApplicationController.new.after_sign_in_path_for(@user)
          }.to change(ListingStore, :count).by(1)
        end

        it "should return the path to the users team page" do
          ApplicationController.new.after_sign_in_path_for(@user).should eq team_path(@user.team)
        end
      end
    end
  end
end

但这显然不是这样做的方法，因为我刚刚收到一个错误:

 Failure/Error: ApplicationController.new.after_sign_in_path_for(@user)
 RuntimeError:
   ActionController::Metal#session delegated to @_request.session, but @_request is nil: #<ApplicationController:0x00000104581c68 @_routes=nil, @_action_has_layout=true, @_view_context_class=nil, @_headers={"Content-Type"=>"text/html"}, @_status=200, @_request=nil, @_response=nil>

那么，我该如何测试这个方法呢？

Answer 1

奇怪的是，我今天就想知道这件事。这就是我的想法。我创建了 ApplicationController 的匿名子类。在这个匿名子类中，我将要测试的 protected 方法公开为公共(public)方法。然后我直接测试了它们。

describe ApplicationController do
  controller do
    def after_sign_in_path_for(resource)
        super resource
    end
  end

  before (:each) do
    @user = FactoryGirl.create(:user)
  end

  describe "After sigin-in" do
    it "redirects to the /jobs page" do
        controller.after_sign_in_path_for(@user).should == jobs_path
    end
  end

end