Question

我正在设计控制器测试，但总是失败因为总是返回nil，请帮助找到问题所在，感谢百万！

posts_controller_spec.rb：

RSpec.describe PostsController, :type => :controller do
   describe "with valid session" do
      describe "GET index" do
         it "assigns all posts as @posts" do
            sign_in :admin, @user
            post = create(:post)
            get :index, {}
            expect(assigns(:posts)).to eq([post])
         end
      end
   end
   ...
end

posts_controller.rb

class PostsController < ApplicationController

   before_action :authenticate_user!
   before_action :set_post, only: [:show, :edit, :update, :destroy]

   # GET /posts
   # GET /posts.json
   def index
     @posts = Post.all
   end
   ...
end

我在spec / rails_helper.rb

中加入了设计测试助手

config.include Devise::TestHelpers, type: :controller

在我的情况下，post是在admin下的作用域，不确定这是否有所不同（功能测试没有通过路由？），所以我只在这里包含我的routes.rb

routes.rb中：

Rails.application.routes.draw do
   root to: 'home#index'
   get 'admin', to: 'admin#index'
   devise_for :users
   scope '/admin' do
     resources :posts
   end
end

最后，来自rspec的输出：

1) PostsController with valid session GET index assigns all posts as @posts
   Failure/Error: expect(assigns(:posts)).to eq([post])

   expected: [#<Post id: 57, title: "MyText", body: "MyText", image_url: "MyString", created_at: "2014-09-02 14:36:01", updated_at: "2014-09-02 14:36:01", user_id: 1>]
        got: nil

   (compared using ==)
 # ./spec/controllers/posts_controller_spec.rb:53:in `block (4 levels) in <top (required)>'

我已阅读此帖子rspec test of my controller returns nil (+factory girl)，并按照建议将get :index更改为controller.index。建议如果通过测试，那么这是一个路由问题。它确实通过了测试，但我仍然不知道路由问题在哪里，以及为什么get :index无效......

Answer 1

这只是一个小错误：在使用devise sign_in

之前创建一个用户

RSpec.describe PostsController, :type => :controller do

   describe "with valid session" do

     let (:user) { create(:user) }

      describe "GET index" do
         it "assigns all posts as @posts" do
           sign_in user
           post = create(:post)
           get :index, {}
           expect(assigns(:posts)).to eq([post])
         end
         ...
      end
   end
end

Rspec测试设计失败，因为总是nil

1 个答案: