Question

我的应用程序中有一个推车控制器

class CartsController < ApplicationController
  def show
    @cart = Cart.find(session[:cart_id])
    @products = @cart.products
  end
end

并编写了测试cartscontroller_spec.rb

RSpec.describe CartsController, type: :controller do
  describe 'GET #show' do
    let(:cart_full_of){ create(:cart_with_products, products_count: 3)}
    before do
      get :show
    end
    it { expect(response.status).to eq(200) }
    it { expect(response.headers["Content-Type"]).to eql("text/html; charset=utf-8")}
    it { is_expected.to render_template :show }
    it 'should be products in current cart' do
      expect(assigns(:products)).to eq(cart_full_of.products)
    end
  end
end

我的个工厂.rb看起来像这样：

factory(:cart) do |f|
  f.factory(:cart_with_products) do
    transient do
      products_count 5
    end
    after(:create) do |cart, evaluator|
      create_list(:product, evaluator.products_count, carts: [cart])
    end
  end
end

factory(:product) do |f|
  f.name('__product__')
  f.description('__well-description__')
  f.price(100500)
end

但我收到了一个错误：

FCartsController GET #show should be products in current cart
Failure/Error: expect(assigns(:products)).to eq(cart_full_of.products)

   expected: #<ActiveRecord::Associations::CollectionProxy [#<Product id: 41, name: "MyProduct", description: "Pro...dDescription", price: 111.0, created_at: "2016-11-24 11:18:43", updated_at: "2016-11-24 11:18:43">]>
        got: #<ActiveRecord::Associations::CollectionProxy []>

看起来我没有创建产品，因为空产品模型数组ActiveRecord :: Associations :: CollectionProxy []，同时，我调查产品的id随着每次测试尝试而增加。此刻我没有固体错误的想法

Answer 1

创建的id的{{1}}未分配给cart的会话。

get :show

<强>更新

控制器中的before do session[:cart_id] = cart_full_of.id get :show end # or before do get :show, session: { cart_id: cart_full_of.id } end需要find值，但您的测试未将此数据提供给控制器请求。如果您使用上述代码之一，则测试请求会向控制器提供会话。

测试期望失败

1 个答案: