Rspec，CanCan和Devise

Question

我开始一个项目，我希望能够测试所有内容:)

我还有一些CanCan和设计问题。

例如，我有一个控制器通讯录。每个人都可以查看，每个人（除禁止人）都可以建立联系。

#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 

代码工作，但我不怎么测试控制器。 我试过了。如果我评论load_and_authorize_resource行，这将起作用。

#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 

但这些测试完全没.... 我什么也没看到在网络上... :( 所以，如果你能在我需要遵循的方式告诉我，我会很高兴的耳朵你:)

Answer 1

CanCan不会拨打Contact.new(params[:contact])。相反，它在基于当前能力权限应用了一些初始属性之后稍后调用contact.attributes = params[:contact]。

请参阅Issue #176了解有关此方法和替代解决方案的详细信息。我计划在CanCan 1.5版中修正这个问题，如果不能更早的话。