Rpsec「無路線匹配」

Question

我有一個奇怪的情況。 我有我的routes.rb這樣的代碼：

concern :votable do 
    post :vote_up, on: :member, controller: :votes 
    post :vote_down, on: :member, controller: :votes 
end 

resources :questions, concerns: [:commentable, :votable], shallow: true do 
    resources :answers, concerns: [:commentable, :votable] 
end 

所以，它給我的助手通過 '後' vote_up_question和vote_up_answer：

vote_up_answer POST /answers/:id/vote_up(.:format)     votes#vote_up 
vote_down_answer POST /answers/:id/vote_down(.:format)    votes#vote_down 
vote_up_question POST /questions/:id/vote_up(.:format)    votes#vote_up 
vote_down_question POST /questions/:id/vote_down(.:format)    votes#vote_down 

我votes_controller：

before_action :load_parent 

    def vote_up 
    current_user.vote_for(@parent) 
    redirect_to :back, notice: "Voted up" 
    end 

    private 

    def load_parent 
    resource, id = request.path.split("/")[1, 2] 
    @parent = resource.singularize.classify.constantize.find(id) 
    end 

一切完美的作品，但！ 我想測試load_parent方法使用RSpec：

RSpec.describe VotesController, type: :controller do 
    let(:question) {create(:question)} 
    let(:answer) {create(:answer, user_id: user, question_id: question)} 
    let(:user) {create(:user)} 
    before(:each) do |example| 
    sign_in user if example.metadata[:sign_in] 
    request.env["HTTP_REFERER"] = question_path(question) if example.metadata[:redirect_back] 
    end 


    describe 'POST #vote_up', sign_in: true, redirect_back: true do 
    it 'should assign question to @parent' do 
     post vote_up_question_path(question) 
     expect(assigns(:parent)).to eq 'question' 
    end 
    end 
end 

這裏是一個問題：

ActionController::UrlGenerationError: 
     No route matches {:action=>"https://stackoverflow.com/questions/1/vote_up", :controller=>"votes"} 

有什麼不對？我也嘗試過不同的方式做出了明確的路線，像post :vote_up, question_id: question，但它不工作

Answer 1

嘗試：

let!(:question) {create(:question)} 
let!(:user) {create(:user)} 
let!(:answer) {create(:answer, user_id: user, question_id: question)} 

讓懶惰評估，所以如果它不在此塊它可能調用未定義。

然後做：

describe 'POST #vote_up', sign_in: true, redirect_back: true do 
it 'should assign question to @parent' do 
    post :vote_up, id: question.id 
    expect(assigns(:parent)).to eq 'question' 
end 

末