期望對象在控制器中使用Rspec接收方法

Question

我試圖測試當調用控制器的動作時是否調用某個方法。

describe Admin::CartProductDesignsController, :type => :controller do 
    let!(:personalized_cart_product) { create :personalized_cart_product} 
    let!(:cart_product_design) { create :cart_product_design, quantity: 100, personalized_cart_product: personalized_cart_product } 

    describe "PATCH #update" do 
    it "generates the production sheet" do 
     expect_any_instance_of(CartProductDesign).to receive(:some_method) 
     patch :update, cart_product_design: {quantity: "20"}, cart_product_id: personalized_cart_product.id, id: cart_product_design , format: 'js' 
    end 
    end 
end 


class Admin::CartProductDesignsController < Admin::ApplicationController 

    inherit_resources 
    actions :create, :update, :destroy 
    respond_to :html, :js 

    def update 
    @cart_product_design.some_method 
    update! do |success, failure| 
     success.html { redirect_to [:admin, @cart_product_design.order] } 
     failure.html { redirect_to [:admin, @cart_product_design.order], alert: @cart_product_design.errors.full_messages.first } 
    end 
    end 
end 

，當我的RSpec運行這給了這個錯誤：

1) Admin::CartProductDesignsController PATCH #update generates the production sheet 
    Failure/Error: Unable to find matching line from backtrace 
     Exactly one instance should have received the following message(s) but didn't: some_method 

爲什麼失敗？ 不知何故補丁請求一個黑盒，它只是返回一些值，並不在乎它被稱爲內部？提前

Answer 1

@cart_product_design

由於僅被繼承update!方法來設置，所以它應該是nil，當你在你的控制器方法的第一個語句就可以調用some_method。你的方法真的叫做some_method？

做你想要爲繼承的資源做寶石，看README，看看這個例子是什麼：

class ProjectsController < InheritedResources::Base 
    def update 
    @project = Project.find(params[:id]) 
    @project.something_special! 
    update! 
    end 
end 

順便說一句，我想你注意到這種寶石現在已經過時。