Question

在接受测试中，我要测试gift.available_quantity的值是虚拟属性：

  def available_quantity
    pendings_orders = Order.where(status: 'pending')
    order_lines_pending = OrderLine.where(order_id: pendings_orders)
    gift_quantity_pending = order_lines_pending.sum do |oline|
      return oline.quantity if oline.gift_ean13 == ean13
    end
    quantity - gift_quantity_pending
  end

我没有测试我的代码，但这不是问题：）

问题是我的rspec在创建伪造订单之前评估了gift.available_quantity的价值：

require 'acceptance_helper'

resource 'Gifts' do
  header 'Accept', 'application/json'
  header 'Content-Type', 'application/json'
  header 'Authorization', :authorization

  get '/api/v1/gifts' do
    let!(:member) { create(:member, id: 1) }

    let(:user) { create(:user, :activated, member: member) }
    let(:token) { Knock::AuthToken.new(payload: { sub: user.id }).token }
    let(:authorization) { "Bearer #{token}" }

    let!(:delivery_address) { create(:delivery_address, :favorited, member: member) }
    let!(:gifts) { create_list(:gift, 2, :enabled, quantity: 4) }

    let(:order_lines) { create(:order_line, gift_ean13: gifts.first.ean13, quantity: 1, order_id: order.id) }
    let(:order_lines2) { create(:order_line, gift_ean13: gifts.last.ean13, quantity: 2, order_id: order.id) }

    let!(:order) { create(:order, member: member, delivery_address: delivery_address) }


    example_request 'Get gift list' do
      expected_response = {
        gifts: [
        {
        id: gifts.first.id,
        name: gifts.first.name,
        description: gifts.first.description,
        reward_price: gifts.first.reward_price,
        quantity: gifts.first.quantity,
        date_from: gifts.first.date_from,
        date_to: gifts.first.date_to,
        image: nil,
        quantity_alert: gifts.first.quantity_alert,
        available_quantity: 3
      },
      {
        id: gifts.last.id,
        name: gifts.last.name,
        description: gifts.last.description,
        reward_price: gifts.last.reward_price,
        quantity: gifts.last.quantity,
        date_from: gifts.last.date_from,
        date_to: gifts.last.date_to,
        image: nil,
        quantity_alert: gifts.last.quantity_alert,
        available_quantity: 2
      }
    ]
  }

      expect(status).to eq(200)
      expect(response_body).to eq(expected_response.to_json)
    end
  end
end

我的订单以前没有创建过，所以gift.avalaible_quantity不好...

有人可以帮助我理解“ RSpec流程”吗？

Answer 1

我认为问题在于规范运行之前没有创建您的order_lines。

使用let!来创建它们，以便它们在available_quantity方法运行时存在。

let!(:order_lines) { create(:order_line, gift_ean13: gifts.first.ean13, quantity: 1, order_id: order.id) }
let!(:order_lines2) { create(:order_line, gift_ean13: gifts.last.ean13, quantity: 2, order_id: order.id) }

rspec流程无法理解

1 个答案: