Rspec測試失敗，出現意外的消息：文章

Question

我正在用Rspec使用Devise。所以，我已經兩個示範叫用戶和文章這是文章belongs_to的用戶

當運行rspec，我得到一個錯誤是說：

1) ArticlesController POST #create with valid attributes saves the article 

Failure/Error: post :create, { article: valid_attributes } 
    #<Double "user"> received unexpected message :articles with (no args) 
    # ./app/controllers/articles_controller.rb:17:in `create' 
    # ./spec/controllers/articles_controller_spec.rb:43:in `block (4 levels) in <top (required)>' 

下面是我articles_controller.rb

def new 
    @article ||= Article.new 
    render 
end 

def create 
    @article = @user.articles.new(article_params) 
    if @article.save 
    redirect_to articles_path, notice: "Well done brah! Your article has been publish" 
    else 
    render 'new' 
    end 
end 

spec/controllers/articles_controller_spec.rb

RSpec.describe ArticlesController, type: :controller do 
    let(:article) { FactoryGirl.create(:article) } 
    let (:valid_attributes) { FactoryGirl.attributes_for(:article) } 

describe "POST #create" do 
    context "with valid attributes" do 
    it "saves the article" do 
     sign_in 
     post :create, { article: valid_attributes } 
     expect(Article.count).to eq(1) 
    end 
    end 
end 

spec/factories/articles.rb

FactoryGirl.define do 
    factory :article do 
    title "Article Title" 
    content "Article Content" 
    default_image "default_image" 
    user 
    category 
    end 
end 

我的錯誤在哪裏？我困在這裏

修訂

spec/rails_helper.rb

RSpec.configure do |config| 

    config.include Devise::TestHelpers, :type => :controller 
    config.include ControllerHelpers, :type => :controller 

end 

spec/support/controller_helpers.rb

module ControllerHelpers 
    def sign_in(user = double('user')) 
    if user.nil? 
     allow(request.env['warden']).to receive(:authenticate!).and_throw(:warden, {:scope => :user}) 
     allow(controller).to receive(:current_user).and_return(nil) 
    else 
     allow(request.env['warden']).to receive(:authenticate!).and_return(user) 
     allow(controller).to receive(:current_user).and_return(user) 
    end 
    end 
end 

兩個更新的文件上面，我從設計維基得到它 - https://github.com/plataformatec/devise/wiki/How-To:-Stub-authentication-in-controller-specs

Answer 1

您需要爲您的用戶*使用實際的數據庫記錄。

RSpec.describe ArticlesController, type: :controller do 
    let(:article) { FactoryGirl.create(:article) } 
    let(:valid_attributes) { FactoryGirl.attributes_for(:article) } 
    let(:user) { FactoryGirl.create(:user) } 
    let(:valid_session) { sign_in(user) } 

    describe "POST #create" do 
    before { valid_session } 
    context "with valid attributes" do 
     it "saves the article" do 
     # less prone to false positives 
     expect do 
      post :create, { article: valid_attributes } 
     end.to change(Article, :count).by(1) 
     end 
    end 
    end 
end 

我們使用expect {}.to change，因爲你可以得到一個假陽性，如果數據庫沒有清理正確。

Devise::TestHelpers已經有sign_in函數。所以擺脫你的ControllerHelpers模塊，以便你的項目沒有鏈接到Devise或Warden內部。