小编enr*_*stn的帖子

这是我要测试的控制器：

class UsersController < ApplicationController
  load_and_authorize_resource

  def index
    @users = User.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @users }
    end
  end

  def show
    @user = User.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @user }
    end
  end

  #other actions here

end

如您所见，我使用了 CanCan 方法，load_and_authorize_resource因此我为 RSpec 编写了一个 ControllerHelper：

# spec/support/controller_spec.rb
module ControllerHelper
  def should_authorize(action, subject)
    controller.should_receive(:authorize!).with(action, subject).and_return('passed!')
  end
end

然后我编写了 UserController 规范：

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

describe UsersController do

  describe "GET #index" …