继续获取@controller为nil错误

Question

在Rubyonrails教程中尝试运行Rspec测试时，我一直收到此错误

失败：

1）GET'about'应该成功

 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)>'

我已经尽力纠正了所有问题，但是都被证明是徒劳的。任何帮助将不胜感激。

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

route.rb文件：

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

  get "pages/contact"

  get "pages/about"

end

顺便说一句，我没有问题运行Spork和自动测试。

Answer 1

问题在于测试中的嵌套：该describe PagesController块仅包装前两个测试，而不包装最后一个。

它看起来应该像这样：

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是我的测试中的nil错误

ps我已经取出了render_views顶层describe块中的所有块以外的所有块-您只需要为该块调用一次（请参阅规范）。