Question

我正在开发一个小型电子商务，在为购物车控制器运行测试时遇到问题。

此处的购物车控制器

class CartsController < ApplicationController
  include CurrentCart #modul current_cart in controllers/concerns
  before_action :set_cart, only: [:show, :edit, :update, :destroy]

  before_action :set_current_cart, only: [:index] 

  # GET /carts
  # GET /carts.json
  def index
    respond_to do |format|
      format.html { redirect_to @cart, notice: 'Line item was successfully created.' }
      format.json { render :show, status: :created, location: @line_item }
    end
  end

  # GET /carts/1
  # GET /carts/1.json
  def show
  end

  # GET /carts/new
  def new
    @cart = Cart.new
  end

  # GET /carts/1/edit
  def edit
  end

  # POST /carts
  # POST /carts.json
  def create
    @cart = Cart.new(cart_params)

    respond_to do |format|
      if @cart.save
        format.html { redirect_to @cart, notice: 'Cart was successfully created.' }
        format.json { render :show, status: :created, location: @cart }
      else
        format.html { render :new }
        format.json { render json: @cart.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /carts/1
  # PATCH/PUT /carts/1.json
  def update
    respond_to do |format|
      if @cart.update(cart_params)
        format.html { redirect_to @cart, notice: 'Cart was successfully updated.' }
        format.json { render :show, status: :ok, location: @cart }
      else
        format.html { render :edit }
        format.json { render json: @cart.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /carts/1
  # DELETE /carts/1.json
  def destroy
    @cart.destroy if @cart.id == session[:cart_id]
    session[:cart_id] = nil
    respond_to do |format|
      format.html { redirect_to catalog_index_url, notice: 'Cart was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
  # Use callbacks to share common setup or constraints between actions.
  def set_cart
    @cart = Cart.includes(line_items: :product).find(params[:id])
  end

  # Never trust parameters from the scary internet, only allow the white list through.
  def cart_params
    params.fetch(:cart, {})
  end
end

这里是我的测试

require 'test_helper'

class CartsControllerTest < ActionDispatch::IntegrationTest
  setup do
    @line_item = line_items(:one)
    @product = products(:one)
    @cart = carts(:one)

  end

  test "should get index" do

    get carts_url
    assert_response :success
  end

  test "should get new" do
    get new_cart_url
    assert_response :success
  end

  test "should create cart" do
    assert_difference('Cart.count') do
      post carts_url, params: { cart: {} }
    end

    assert_redirected_to cart_url(Cart.last)
  end

  test "should show cart" do
    get cart_url(@cart)
    assert_response :success
  end

  test "should get edit" do
    get edit_cart_url(@cart)
    assert_response :success
  end

  test "should update cart" do
    patch cart_url(@cart), params: { cart: {} }
    assert_redirected_to cart_url(@cart)
  end

  test "should destroy cart" do
    post line_items_url, params: { product_id: products(:one).id }
    @cart = Cart.find(session[:cart_id])
    assert_difference('Cart.count', -1) do
      delete cart_url(@cart)
    end
    assert_redirected_to catalog_index_url
  end
end

结果在这里：

故障：CartsControllerTest＃test_should_destroy_cart预期   响应为<3XX：redirect>，但响应为<500：Internal Server   错误>

故障：CartsControllerTest＃test_should_get_edit预期响应   表示为<2XX：成功>，但表示为<500：内部服务器错误>

故障：CartsControllerTest＃test_should_update_cart预期   响应为<3XX：redirect>，但响应为<500：Internal Server   错误>

这是cartsController的模块化当前购物车：

module CurrentCart

  private

  def set_current_cart
    @cart = Cart.find(session[:cart_id])
  rescue ActiveRecord::RecordNotFound
    @cart = Cart.create
    session[:cart_id] = @cart.id
  end
end

我认为问题出在这里：如果我从购物车控制器：.includes（line_items：：product）的set_cart方法中删除它，则测试将完美运行而不会失败，但是我不明白为什么。（我放入了include，因为否则从浏览器访问购物车时会出现此错误：

使用急于加载检测到的LineItem => [：product]添加到您的 finder：：includes => [：product]调用堆栈

更新：

我在文件“ test.log”中发现了一些有趣的东西：

Bullet::Notification::UnoptimizedQueryError - user: claudio
DELETE /carts/980190963
AVOID eager loading detected
  LineItem => [:product]
  Remove from your finder: :includes => [:product]
Call stack
  ##here there's a path##.rb:45:in `block (2 levels) in <class:CartsControllerTest>'
  ##here there's a path##:in `block in <class:CartsControllerTest>'

我使用.includes时Rails测试失败500

0 个答案: