Factory Girl & Rspec 控制器测试失败

Question

我对测试还很陌生，并且仍然围绕着工厂女孩，我认为这是这次失败的罪魁祸首。尽管解决方案可能很简单，但我已经搜索了具有相同失败消息的其他帖子，但答案对我不起作用。

我决定通过构建这个简单的博客应用来学习 BDD/TDD。以下是失败信息：

Failures:

  1) PostsController POST create creates a post
     Failure/Error: expect(response).to redirect_to(post_path(post))
       Expected response to be a <redirect>, but was <200>

测试：

RSpec.describe PostsController, :type => :controller do
    let(:post) { build_stubbed(:post) }

    describe "POST create" do
        it "creates a post" do
          expect(response).to redirect_to(post_path(post))
          expect(assigns(:post).title).to eq('Kicking back')
          expect(flash[:notice]).to eq("Your post has been saved!")
        end
    end
end

我的工厂女孩​​档案：

FactoryGirl.define do
    factory :post do
        title 'First title ever'
        body 'Forage paleo aesthetic food truck. Bespoke gastropub pork belly, tattooed readymade chambray keffiyeh Truffaut ennui trust fund you probably haven\'t heard of them tousled.'
    end
end

控制器：

class PostsController < ApplicationController

    def index
        @posts = Post.all.order('created_at DESC')
    end

    def new
        @post = Post.new
    end

    def create
        @post = Post.new(post_params)

        if @post.save
            flash[:notice] = "Your post has been saved!"
        else
            flash[:notice] = "There was an error saving your post."
        end
        redirect_to @post
    end

    def show
        @post = Post.find(params[:id])
    end

    private

    def post_params
        params.require(:post).permit(:title, :body)
    end
end 

如果相关，这是我的 Gemfile：

gem 'rails', '4.1.6'

...

group :development, :test do
  gem 'rspec-rails', '~> 3.1.0'
  gem 'factory_girl_rails', '~> 4.5.0'
  gem 'shoulda-matchers', require: false
  gem 'capybara'
end

感谢任何帮助。

Answer 1

试试这个进行测试：

context 'with valid attributes' do
  it 'creates the post' do
    post :create, post: attributes_for(:post)
    expect(Post.count).to eq(1)
  end

  it 'redirects to the "show" action for the new post' do
    post :create, post: attributes_for(:post)
    expect(response).to redirect_to Post.first
  end
end

就我个人而言，我也会将您在不同测试中所做的一些期望分开。但是，我不知道在控制器中测试它们是否以这种方式设置是否真的有必要。

编辑： 您的创建操作还有一个问题，如果它没有成功保存，它仍然会尝试重定向到 @post 这将失败。您的无效属性测试应该突出显示这一点。