ruby-on-rails-3 - Rspec、CanCan 和 Devise

Question

我正在开始一个项目，我希望能够测试一切:)

我对 CanCan 和设计有一些问题。

例如，我有一个 Controller 联系人。每个人都可以查看，每个人(被禁止的人除外)都可以创建联系人。

#app/controllers/contacts_controller.rb
class ContactsController < ApplicationController
  load_and_authorize_resource

  def index
    @contact = Contact.new
  end

  def create
    @contact = Contact.new(params[:contact])
    if @contact.save
      respond_to do |f|
        f.html { redirect_to root_path, :notice => 'Thanks'}
      end
    else
      respond_to do |f|
        f.html { render :action => :index }
      end
    end
  end
end

代码有效，但我不知道如何测试 Controller 。
我试过这个。如果我评论 load_and_authorize_resource 行，这会起作用。

#spec/controllers/contacts_controller_spec.rb
require 'spec_helper'

describe ContactsController do

  def mock_contact(stubs={})
    (@mock_ak_config ||= mock_model(Contact).as_null_object).tap do |contact|
      contact.stub(stubs) unless stubs.empty?
    end
  end

  before (:each) do
    #    @user = Factory.create(:user)
    #    sign_in @user
    #    @ability = Ability.new(@user)
    @ability = Object.new
    @ability.extend(CanCan::Ability)
    @controller.stubs(:current_ability).returns(@ability)
  end

  describe "GET index" do
    it "assigns a new contact as @contact" do
      @ability.can :read, Contact
      Contact.stub(:new) { mock_contact }
      get :index
      assigns(:contact).should be(mock_contact)
    end
  end

  describe "POST create" do

    describe "with valid params" do
      it "assigns a newly created contact as @contact" do
        @ability.can :create, Contact
        Contact.stub(:new).with({'these' => 'params'}) { mock_contact(:save => true) }
        post :create, :contact => {'these' => 'params'}
        assigns(:contact).should be(mock_contact)
      end

      it "redirects to the index of contacts" do
        @ability.can :create, Contact
        Contact.stub(:new) { mock_contact(:save => true) }
        post :create, :contact => {}
        response.should redirect_to(root_url)
      end
    end

    describe "with invalid params" do
      it "assigns a newly created but unsaved contact as @contact" do
        @ability.can :create, Contact
        Contact.stub(:new).with({'these' => 'params'}) { mock_contact(:save => false) }
        post :create, :contact => {'these' => 'params'}
        assigns(:contact).should be(mock_contact)
      end

      it "re-renders the 'new' template" do
        @ability.can :create, Contact
        Contact.stub(:new) { mock_contact(:save => false) }
        post :create, :contact => {}
        response.should render_template("index")
      end
    end

  end
end

但是这些测试完全失败了......
我在网上什么也没看到...... :(
所以，如果你能在我必须遵循的方式上给我建议，我会很高兴听到你的声音:)

Answer 1

CanCan不打电话Contact.new(params[:contact]) .相反，它调用 contact.attributes = params[:contact]稍后根据当前的能力权限应用一些初始属性。

见 Issue #176有关此问题的详细信息和替代解决方案。如果不是更早的话，我计划在 CanCan 1.5 版中解决这个问题。