RSpec控制器测试PUT更新嵌套资源的操作

Question

我正在学习Rails以及如何使用RSpec进行测试。我需要帮助完成PUT更新操作的RSpec控制器测试。该控制器指向一个嵌套资源。在Web浏览器中，嵌套路由和相关程序代码都能正常工作。我只需要帮忙编写PUT更新操作的RSpec测试。控制器执行的其他操作已经通过测试。

我知道必须传递路径和父子ID给PUT方法，但我对以下内容感到困惑：（1）如何使用FactoryGirl对象正确设置PUT更新测试，以及（2）传递路径和ID到PUT方法中所需的正确RSpec语法。

rake routes中的相关路由:

  PATCH  /members/:member_id/cardio_exercises/:id(.:format)      cardio_exercises#update
  PUT    /members/:member_id/cardio_exercises/:id(.:format)      cardio_exercises#update

routes.rb 中包含： resources :members do resources :cardio_exercises end

members.rb 中包含： has_many :cardio_exercises, :dependent => :destroy

cardio_exercises.rb 中包含： belongs_to :member

相关工厂：

FactoryGirl.define do
 factory :cardio_exercise do
   title "My cardio exercise"
   duration 30
   calories_burned 300
   date "2014-11-15"       
   association :member     
 end
end


FactoryGirl.define do
  factory :member do
    first_name {Faker::Name.first_name}
    last_name {Faker::Name.last_name}
    age 21
    height 75
    weight 195
    goal "fffff" * 5
    start_date "2014-11-15"     
  end
end

cardio_exercises_controller.rb文件

class CardioExercisesController < ApplicationController

# :get_member is defined in the private method at the bottom of this file,
# and takes the member_id provided by the routing and
#converts it to a @member object.

before_action :get_member    

# GET member/1/cardio_exercises
# GET member/1/cardio_exercises.json
def index
@cardio_exercises = @member.cardio_exercises
end

# GET member/1/cardio_exercises/1
# GET member/1/cardio_exercises/1.json
def show
 cardio_exercise = @member.cardio_exercises.find(params[:id])
end

# GET member/1/cardio_exercises/new
def new
  @member = Member.find(params[:member_id])
  @cardio_exercise = @member.cardio_exercises.build
end

# GET member/1/cardio_exercises/1/edit
def edit
@cardio_exercise = @member.cardio_exercises.find(params[:id])
end

# POST member/1/cardio_exercises
# POST member/1/cardio_exercises.json
def create
@cardio_exercise = @member.cardio_exercises.build(cardio_exercise_params)

if @cardio_exercise.save
flash[:success] = "Cardio exercise was successfully created."
redirect_to member_cardio_exercises_path(@member)
else
render 'new'
end
end  

# PATCH/PUT member/1/cardio_exercises/1
# PATCH/PUT member/1/cardio_exercises/1.json
def update
 @cardio_exercise = @member.cardio_exercises.find(params[:id])
  if @cardio_exercise.update(cardio_exercise_params)
  flash[:success] = "Cardio exercise was successfully updated."
  redirect_to member_cardio_exercises_path(@member)
else
render 'edit'
end
end

# DELETE member/1/cardio_exercises/1
# DELETE member/1/cardio_exercises/1.json
def destroy
@cardio_exercise = @member.cardio_exercises.find(params[:id])
@cardio_exercise.destroy
respond_to do |format|
format.html { redirect_to (member_cardio_exercises_path(@member)), notice: 'Cardio exercise was    successfully destroyed.' }
format.json { head :no_content }
end
end

private
# The get_member action converts the member_id given by the routing
# into an @member object, for use here and in the view.

def get_member
@member = Member.find(params[:member_id])
end


def cardio_exercise_params
params.require(:cardio_exercise).permit(:title, :duration, :calories_burned, :date, :member_id)
end
end

cardio_exercises_controller_spec.rb和我尝试设置PUT更新操作的多个测试：

require 'rails_helper'

RSpec.describe CardioExercisesController, :type => :controller do
  before :each do
    @member = FactoryGirl.create(:member)      
    @cardio_exercise = FactoryGirl.create(:cardio_exercise, member: @member)      
    @cardio_exercise_attributes = FactoryGirl.attributes_for(:cardio_exercise, :member_id => @member)
    @cardio_exercise_update_attributes = FactoryGirl.attributes_for(:cardio_exercise, :title => "Your Cardio Exercise", :member_id => @member)
  end

describe "GET index" do
it "assigns all cardio_exercises as @member.cardio_exercises" do
  get :index, { :member_id => @member  }
  expect(assigns(:cardio_exercises)).to eq(@member.reload.cardio_exercises)
end
end

describe "GET show" do
it "assigns the requested cardio_exercise as @cardio_exercise" do
  get :show, { :member_id => @member, :id => @cardio_exercise }    
  expect(assigns(:cardio_exercise)).to eq(@cardio_exercise)  
end
end 

describe "GET new" do
 it "assigns a new cardio_exercise as @member.cardio_exercise" do
  get :new, { :member_id => @member }
  expect(assigns(:cardio_exercise)).to be_a_new(CardioExercise)
end
end

 describe "GET edit" do
  it "assigns the requested cardio_exercise as @member.cardio_exercise" do      
  get :edit, { :member_id => @member, :id => @cardio_exercise }
  expect(assigns(:cardio_exercise)).to eq(@cardio_exercise) 
 end
end

describe "POST create" do
  describe "with valid params" do
  it "creates a new CardioExercise" do        
    expect {          
      post :create, { :member_id => @member, :cardio_exercise => @cardio_exercise_attributes }
    }.to change(CardioExercise, :count).by(1)         
  end

  it "assigns a newly created cardio_exercise as @cardio_exercise" do
    post :create, { :member_id => @member, :cardio_exercise => @cardio_exercise_attributes }        
    expect(assigns(:cardio_exercise)).to be_a(CardioExercise)
    expect(assigns(:cardio_exercise)).to be_persisted
  end

  it "redirects to the created cardio_exercise" do
    post :create, { :member_id => @member, :cardio_exercise => @cardio_exercise_attributes }
    expect(response).to redirect_to(member_cardio_exercises_path(@member))
  end
  end
 end

 describe "PUT update" do
  describe "with valid params" do

  it "updates the requested cardio_exercise" do
    put :update, { :member_id => @member, :id => @cardio_exercise_update_attributes }
    @member.cardio_exercise.reload                      
    put :update, { :member_id => @member, :id => @cardio_exercise_update_attributes}

  end

  it "assigns the requested cardio_exercise as @member.cardio_exercise" do
    put :update, { :member_id => @member, :cardio_exercise => @cardio_exercise_update_attributes = FactoryGirl.attributes_for(:cardio_exercise, :title => "Your Cardio Exercise", :member_id => @member)}
    expect(assigns(:cardio_exercises)).to eq(@member.cardio_exercises)
  end

  it "redirects to the cardio_exercise" do 
    put :update, { :member_id => @member, :id => @cardio_exercise }        
    expect(response).to redirect_to(@member.cardio_exercise)
  end
 end

 describe "with invalid params" do
  xit "assigns the cardio_exercise as @member.cardio_exercise" do

  end

  xit "re-renders the 'edit' template" do

    expect(response).to render_template("edit")
  end
 end
end

describe "DELETE destroy" do
  it "destroys the requested cardio_exercise" do
  expect {
    delete :destroy, { :member_id => @member, :id => @cardio_exercise }
  }.to change(CardioExercise, :count).by(-1)
  end

  it "redirects to the cardio_exercises list" do      
  delete :destroy, { :member_id => @member, :id => @cardio_exercise }
  expect(response).to redirect_to(member_cardio_exercises_url)
  end
end
end

请查看我的测试设置和PUT更新测试。特别是，我的设置是否正确测试PUT更新操作？

如何更改控制器的更新操作的设置和/或测试，以便：

(1) 我的测试与我的更新操作的路由匹配？

(2) 我以正确的RSpec语法传递必要的父级和子级ID，以便找到记录？

感谢您的帮助！

- codeinspired

---

你尝试过在测试中将“put”更改为“patch”吗？请记住，Rails 4在更新调用时使用PATCH。 - dgilperez

尝试了补丁，但是生成了相同的记录未找到/路由不匹配错误。问题似乎与我为更新操作设置测试的方式有关。 - codeinspired

Answer 1

要进行更新，您必须传递member_id、心血管运动的id和cardio_exercise参数：

put :update, { 
  :member_id => @member, 
  :id => @cardio_exercise.id, 
  :cardio_exercise => @cardio_exercise_update_attributes 
}

- infused

---

感谢@infused，添加cardio_exercise参数使第一个PUT测试通过。不幸的是，第二个和第三个测试失败，出现未定义方法错误“#Member:0x00000007778c40的cardio_exercise”。不明白为什么在这些测试中会出现无方法错误。 - codeinspired

rspec ./spec/controllers/cardio_exercises_controller_spec.rb:79 # 当有效参数进行 CardioExercisesController PATCH 更新时，将请求的 cardio_exercise 分配为 @member.cardio_exercise - codeinspired

rspec ./spec/controllers/cardio_exercises_controller_spec.rb:89 # CardioExercisesController PATCH update with valid params redirects to the cardio_exercise - codeinspired

我猜测 @member 没有一个 cardio_exercise 方法。 - infused

不知道该怎么做...我需要进行更多的研究，以找出我的测试出了什么问题。为了对你公平，我会将你的答案标记为已接受，因为你至少帮助我通过了第一个规格。我正在尝试学习如何正确操作，如果你有其他想法，我很愿意听取。否则，感谢你给予我的帮助！ - codeinspired