rspec 期望所有 :resources 等于 resource

Question

我是RSpec的新手，我想知道为什么我没有通过这个测试

before(:each) { get :index }

it "assigns all favorites as @favorites" do
  favorite = FactoryGirl.create(:favorite)
  expect(assigns(:favorites)).to eq([favorite])
end

它说

1) FavoritesController GET index assigns all favorites as @favorites
   Failure/Error: expect(assigns(:favorites)).to eq([favorite])

     expected: [#<Favorite id: 1, patient_id: 6, doctor_id: 5>]
          got: #<ActiveRecord::Relation []>                                           

     (compared using ==)

     Diff:                                                                                    
     @@ -1,2 +1,2 
     -[#<Favorite:0x000000058a5ca0 id: 1, patient_id: 6, doctor_id: 5>]
     +[]

似乎 assigns(:favorites) 空了。我也尝试过另一种方法

def valid_attributes
  doctor = FactoryGirl.create(:doctor)
  patient = FactoryGirl.create(:patient)
  FactoryGirl.attributes_for(:favorite, doctor_id: doctor.id, patient_id: patient.id)
end

it "assigns all favorites as @favorites" do
  favorite = Favorite.create! valid_attributes
  expect(assigns(:favorites)).to eq([favorite])
end

它得到了同样的错误。任何输入都会对我有帮助，我想问一下是否有任何方法可以简化它。

更新

app/controllers/favorite_controller.rb

class FavoritesController < ApplicationController
  before_action :set_favorite, only: [:destroy]
  before_action :authenticate_user!

  def index
    @favorites = Favorite.where(:patient_id => current_user.id).order(id: :asc)
  end
end

spec/controllers/favorite_controller_spec.rb

require 'spec_helper'

describe FavoritesController, type: :controller do

  login_patient

  describe "GET index" do
    let!(:favorite) { FactoryGirl.create(:favorite) }
    before { get :index }

    it { expect(response).to render_template(:index) }
    it { expect(response).to be_success }
    it { expect(response).to have_http_status(200) }

    it "blocks unauthenticated access", :skip_before do
      expect(response).to redirect_to(new_user_session_path)
    end

    it "assigns all favorites as @favorites" do
      expect(assigns(:favorites).to_a).to eq([favorite])
    end
  end
end

spec/support/controller_helpers.rb

module ControllerHelpers
  def login_patient
    before :each do |example|
      unless example.metadata[:skip_before]
        @request.env["devise.mapping"] = Devise.mappings[:user]
        @patient = FactoryGirl.create(:patient)
        sign_in :user, @patient
      end
    end
  end
end

Answer 1

尝试在请求之前创建记录：

let!(:favorite) { FactoryGirl.create(:favorite) }
before(:each) { get :index }

it "assigns all favorites as @favorites" do
  expect(assigns(:favorites).to_a).to eq([favorite])
end

Answer 2

您是在发送请求后创建记录，因此在请求完成时，您刚刚创建的记录不会包含在收藏夹列表中。将您的测试代码更改为以下内容

let!(:favorite) { FactoryGirl.create(:favorite) }

before { get :index }

it "assigns all favorites as @favorites" do
  expect(assigns(:favorites)).to eq([favorite])
end

这可能仍然会失败，因为 assigns(:favorites) 是一个 ActiveRecord::Relation object 所以你必须调用 to_a

expect(assigns(:favorites).to_a).to eq([favorite])

更新：

由于收藏是按患者筛选的，所以在测试中要确保创建的收藏是属于患者的。您可以通过将收藏夹更改为

来做到这一点

let!(:favorite) { FactoryGirl.create(:favorite, patient: @patient)

rspec 期望所有 :resources 等于 resource

rspec expects all :resources to equal resource

rspec

ruby-on-rails