Question

我很难通过rspec测试让控制器通过。我想测试POST创建操作是否有效。我正在使用rails（3.0.3），cancan（1.4.1），devise（1.1.5），rspec（2.3.0）

模型很简单

class Account < ActiveRecord::Base
  attr_accessible :name 
end

控制器也是标准配置（直接用于脚手架）

class AccountsController < ApplicationController
  before_filter :authenticate_user!, :except => [:show, :index]
  load_and_authorize_resource
  ...

  def create
    @account = Account.new(params[:account])

    respond_to do |format|
      if @account.save
        format.html { redirect_to(@account, :notice => 'Account was successfully created.') }
        format.xml  { render :xml => @account, :status => :created, :location => @account }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @account.errors, :status => :unprocessable_entity }
      end
    end
  end

我希望传递的rspec测试是（原谅标题，也许不是最合适的标题）

 it "should call create on account when POST create is called" do
   @user = Factory.create(:user)
   @user.admin = true
   @user.save

   sign_in @user #this is an admin
   post :create, :account => {"name" => "Jimmy Johnes"}
   response.should be_success
   sign_out @user

 end

然而我得到的只是

AccountsController get index should call create on account when POST create is called
 Failure/Error: response.should be_success
 expected success? to return true, got false
 # ./spec/controllers/accounts_controller_spec.rb:46

可以测试其他操作并通过（即获取GET）

这是GET new的测试

it "should allow logged in admin to call new on account controller" do
  @user = Factory.create(:user)
  @user.admin=true
  @user.save

  sign_in @user #this is an admin
  get :new
  response.should be_success
  sign_out @user
end

并且完成此处是能力文件

class Ability
  include CanCan::Ability

  def initialize(user)
    user ||= User.new
    if user.admin?
      can :manage, :all
    else
      can :read, :all
    end
  end
end

有什么想法吗？我的猜测是我使用了错误的rspec期望，因为代码确实有效（只是测试没有按预期执行！）

Answer 1

如果响应代码在200-299范围内，则

response.should be_success返回true。但是创建操作重定向，因此响应代码设置为302，因此失败。

您可以使用response.should redirect_to对此进行测试。检查标准RSpec控制器生成器的输出以获取示例，如下所示：

  it "redirects to the created account" do
    Account.stub(:new) { mock_account(:save => true) }
    post :create, :account => {}
    response.should redirect_to(account_url(mock_account))
  end

Answer 2

通过测试的rspec测试是（感谢zetetic的建议）：

    it "should call create on account when POST create is called" do
    @user = Factory.create(:user)
    @user.admin = true
    @user.save

    sign_in @user #this is an admin
    account = mock_model(Account, :attributes= => true, :save => true) 
    Account.stub(:new) { account }

    post :create, :account => {}
    response.should redirect_to(account_path(account))
    sign_out @user

end

无法使用rspec控制器测试POST创建操作（设计和cancan）

2 个答案: