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，因为我只是得到一个错误：

 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？

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，我将要测试的受保护方法公开为公共方法。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

Answer 2

类似地，如果您想在注册后测试重定向，您有两个选择。

首先，您可以遵循与上面类似的模式，并非常直接地测试 RegistrationsController 中的方法：

require 'spec_helper'

describe RegistrationsController do

  controller(RegistrationsController) do
    def after_sign_up_path_for(resource)
        super resource
    end
  end

  describe "After sign-up" do
    it "redirects to the /organizations/new page" do
        @user = FactoryGirl.build(:user)
        controller.after_sign_up_path_for(@user).should == new_organization_path
    end
  end
end

或者，您可以采取更多集成测试的方法并执行以下操作：

require 'spec_helper'

describe RegistrationsController do

  describe "After successfully completing the sign-up form" do

    before do
        @request.env["devise.mapping"] = Devise.mappings[:user]
    end

    it "redirects to the new organization page" do
        post :create, :user => {"name" => "Test User", "email" => "[email protected]", "password" => "please"}
        response.should redirect_to(new_organization_path)
    end
  end
end

Answer 3

我最近通过谷歌找到了这个答案，并认为我会添加我的解决方案。我不喜欢接受的答案，因为它正在测试应用程序控制器上方法的返回值，而不是测试应用程序的所需行为。

我最终只是测试了创建新会话作为请求规范的调用。

RSpec.describe "Sessions", type: :request do
    it "redirects to the internal home page" do
        user = FactoryBot.create(:user, password: 'password 123', password_confirmation: 'password 123')
        post user_session_path, params: {user: {email: user.email, password: 'password 123'}}
        expect(response).to redirect_to(internal_home_index_path)
    end
end

（Rails 5、Devise 4、RSpec 3）

Answer 4

context "without previous page" do
  before do
    Factory.create(:user, email: "[email protected]", password: "123456", password_confirmation: "123456")
    request.env["devise.mapping"] = Devise.mappings[:user]
    post :create, user: { email: "[email protected]", password: "123456" }
  end
end 

  it { response.should redirect_to(root_path) }
context "with previous page" do
  before do
    Factory.create(:user, email: "[email protected]", password: "123456", password_confirmation: "123456")
    request.env["devise.mapping"] = Devise.mappings[:user]
    request.env['HTTP_REFERER'] = 'http://test.com/restaurants'
    post :create, user: { email: "[email protected]", password: "123456" }
  end

  it { response.should redirect_to("http://test.com/restaurants") }
end

Answer 5

对于新人，我建议这样做：

RSpec.describe ApplicationController, type: :controller do
  let(:user) { create :user }

  describe "After sing-in" do
    it "redirects to the /yourpath/ home page" do
      expect(subject.after_sign_in_path_for(user)).to eq(yourpath_root_path)
    end
  end
end