POST成员路由的Rspec测试失败

Question

我有一个多态投票模型，它通过其父模型上的成员路由进行post。每个父类在控制器中都有一个"投票"方法，我试图在控制器测试中测试这个动作。请查看下面的代码，为了简单起见，我将展示其中一个控制器动作并进行测试。

无论我如何努力并尝试id: @answer, id: @vote, FactoryGirl.attributes_for(:vote, user_id: @user2)进入预期过程，我都无法通过此测试。

factoryGirl.rb

FactoryGirl.define do
  factory :user do |u|
    u.sequence(:email) {|n| "test#{n}@hotmail.com"}
    u.sequence(:username) {|n| "tester#{n}" }
    u.password "password"
    u.password_confirmation "password" 
    u.remember_me true
    u.reputation 200
  end
factory :answer do
    user_id :user
    question_id :question
    body "you need to change your grip"
    votes_count 0
    correct true
  end
factory :vote do
    user_id :user
    votable_id :answer
    votable_type "Answer"
    value 1
  end

Answers_controller_spec.rb

describe "POST vote" do
    it "creates vote" do
      @user2 = FactoryGirl.create(:user)
      @answer = FactoryGirl.create(:answer)
      @vote = FactoryGirl.create(:vote)
      expect {
        post :vote, id: @vote 
      }.to change(Vote, :count).by(1)
      response.should be_success
    end
  end

测试失败

Failures:
  1) AnswersController POST vote creates vote
     Failure/Error: expect {
       count should have been changed by 1, but was changed by 0
     # ./spec/controllers/answers_controller_spec.rb:90:in `block (3 levels) in <top (required)>'
Finished in 2.01 seconds
9 examples, 1 failure

vote.rb

class Vote < ActiveRecord::Base
  attr_accessible :value, :votable_id, :votable_type
  belongs_to :votable, polymorphic: true
  belongs_to :user
  validates_inclusion_of :value, in: [1, -1]
  validates_presence_of :user_id, :value, :votable_id, :votable_type, :points
  validates_uniqueness_of :user_id, scope: :votable_id
  validates_uniqueness_of :value, scope: :votable_id
  before_save :create_points
  def create_points
    self.value == 1 ? self.points = 5 : self.points = -3
  end
end

routes.rb

  resources :answers do 
    member { post :vote }
    member { put :correct }
    resources :comments, except: [:edit, :update]
  end

answers_controller.rb

 def vote 
  @vote = current_user.votes.build(value: params[:value], votable_id: params[:id], votable_type: "Answer")
    respond_to do |format|
    if @vote.save
      format.html { redirect_to :back, notice: "Vote submitted" }
      format.js
    else
      format.html { redirect_to :back, alert: "You can't vote on your own content" }
      format.js
    end
  end
end

Answer 1

id参数为应答的id:

post :vote, id: @answer.id

您可能还需要传递value参数(可能是'up'或'down'值?)。

可能有其他原因导致测试失败，例如Vote模型中的验证。如果vote.save返回false，则检查errors集合。

以下评论:

你需要将value作为参数传递给你的规范中的post .它似乎也有一个重复的投票，你可能根本不需要在你的规范中创建@vote。errors集合由save调用的valid?方法填充。