無法使用rspec控制器測試POST創建操作（設計和cancan）

Question

我很難獲得一個控制器的rspec測試通過。 我想測試POST創建操作是否有效。 我使用rails（3.0.3），cancan（1.4.1），devise（1.1.5），rspec（2.3.0）

這個模型很簡單

class Account < ActiveRecord::Base
  attr_accessible :name 
end

控制器也是標准配置（直接用於腳手架）

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

我想通過的rspec測試是（原諒標題，也許不是最合適的）

 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

其他行動可以測試並通過（即獲取新的）

這是GET新測試

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

完成這里是能力文件

class Ability
  include CanCan::Ability

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

有任何想法嗎？ 我的猜測是我使用了錯誤的rspec期望，因為代碼確實有效（只是測試沒有按預期執行！）

Answer 1

如果響應代碼在200-299范圍內，則response.should be_success返回true。 但是create action重定向，因此響應代碼設置為302，因此失敗。

您可以使用response.should redirect_to進行測試。 檢查標准RSpec控制器生成器的輸出以獲取示例，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

讓測試通過的rspec測試是（感謝zetetic的建議）：

    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