继续获取@controller是零错误

Question

作为Rubyonrails教程的一部分，当我尝试运行Rspec测试时，我一直收到这个错误

故障：

1( 获取"about"应该是成功的

 Failure/Error: get 'about'
 RuntimeError:
   @controller is nil: make sure you set it in your test's setup method.
 # ./spec/controllers/pages_controller_spec.rb:27:in `block (2 levels) in <top (required)>'

我已经尽了一切努力试图纠正它，但都被证明是徒劳的。任何帮助都将不胜感激。

这是我的spec_helper.rb文件

require 'rubygems'
require 'spork'
Spork.prefork do
end
Spork.each_run do
end
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}
RSpec.configure do |config|
config.include RSpec::Rails::ControllerExampleGroup
config.mock_with :rspec
config.fixture_path = "#{::Rails.root}/spec/fixtures"
config.use_transactional_fixtures = true
end

pages_controller.rb文件：

class PagesController < ApplicationController
 def home
 end
 def contact
 end
 def about
 end
 end

pages_controller_spec.rb文件：

require 'spec_helper'
describe PagesController do
  render_views
  describe "GET 'home'" do
    render_views
    it "should be successful" do
      get 'home'
      response.should be_success
    end
  end
  describe "GET 'contact'" do
    render_views
    it "should be successful" do
      get 'contact'
      response.should be_success
    end
  end
end
  describe "GET 'about'" do
    render_views
    it "should be successful" do
      get 'about'
      response.should be_success
    end
  end

routes.rb文件：

SampleApp::Application.routes.draw do
  get "pages/home"
  get "pages/contact"
  get "pages/about"
end

顺便说一句，我运行斯波克和自动测试没有问题。

Answer 1

问题在于测试中的嵌套：describe PagesController块只封装前两个测试，而不封装最后一个。

它应该是这样的：

describe PagesController do
  render_views
  describe "GET 'home'" do
    it "should be successful" do
      get 'home'
      response.should be_success
    end
  end
  describe "GET 'contact'" do
    it "should be successful" do
      get 'contact'
      response.should be_success
    end
  end
  describe "GET 'about'" do
    it "should be successful" do
      get 'about'
      response.should be_success
    end
  end
end

请参阅：我如何摆脱@controller在我的测试中为零错误

p.s.除了顶级describe块中的一个之外，我已经取出了所有的render_views——您应该只需要为该块调用一次它(请参阅规范(。