在测试Rails 3控制器时出现一些意外错误

时间:2011-06-14 16:22:11

标签: ruby-on-rails-3 controller integration-testing rspec2

我有一个如此定义的服务模型:

class Service < ActiveRecord::Base
  attr_accessible :service_type #, ...

  SERVICE_TYPES = {
    :restaurant => "restaurant",
    :retailer   => "retailer"
  }

  SERVICE_TYPES.values.each do |method|
   define_method method.pluralize.to_sym do
      where(:service_type => method)
   end
  end

  def domestic
    where(:country => 'USA')
  end

  def international
    where("country != 'USA'")
  end
end

我决定不将传统的STI模式用于不同的服务,因为它们都具有相同的属性,并且行为相同。有一个父模型,但它仅用于规范化目的,Web用户永远不需要知道它。就应用程序而言,有些服务类型和特定服务。所以基本上我想要这样的网址:

http://myapp/services        # <- Lists all service types
http://myapp/restaurants     # <- Lists all restaurant-type services
http://myapp/restaurants/foo # <- Lists a specific restaurant (using friendly_id gem)
http://myapp/retailers       # <- Lists all retailer-type services
http://myapp/retailers/bar   # <- Lists a specific retailer

所以我创建了一个类似的路由模式:

controller :services, :via => [:get] do 
  match '/services'          => :index
  match '/:service_type'     => :service_index, :as => 'service_type', :constraints => { :service_type => Regexp.new(Service::SERVICE_TYPES.values.map{|s| Regexp.escape(s.pluralize) }.join('|')) }
  match '/:service_type/:id' => :show,          :as => 'service',      :constraints => { :service_type => Regexp.new(Service::SERVICE_TYPES.values.map{|s| Regexp.escape(s.pluralize) }.join('|')) }
end

哪个让我

    services GET  /services(.:format)                              {:controller=>"services", :action=>"index"}
service_type GET  /:service_type(.:format)                         {:service_type=>/restaurants|retailers/, :controller=>"services", :action=>"service_index"}
     service GET  /:service_type/:id(.:format)                     {:service_type=>/restaurants|retailers/, :controller=>"services", :action=>"show"}

控制器定义为

class ServicesController < ApplicationController
  def index
    @service_types = Service::SERVICE_TYPES.values
    @page_title = "Services"
  end

  def service_index
    @service_type  = params[:service_type]
    @domestic      = Service.send(@service_type).domestic
    @international = Service.send(@service_type).international
    @page_title    = @service_type.capitalize
  end

  def show
    @service = Service.find(params[:id])
    @page_title = "Services - #{@service.name}"
  end
end

当我在浏览器中测试时,这一切都按预期工作。但是当我尝试在Rspec2中运行集成测试时,我遇到了一些非常意外的行为。

require 'spec_helper'

describe ServicesController do
  describe "GET 'index'" do
    it "should be successful" do
      get :index
      response.should be_success
    end

    it "should have the right title" do
      get :index
      response.should have_selector(
        "title", 
        :content => "#{@base_title}Services"
      )
    end

    it "should have a link to each service" do
      get :index
      Service::SERVICE_TYPES.values.each do |service_type|
        response.should have_selector("a", :href => service_type_path(service_type.pluralize),
                                           :content => service_type.pluralize)
      end
    end
  end

  describe "GET 'service_index'" do
    Service::SERVICE_TYPES.values.each do |service_type|
      context service_type.pluralize do
        it "should be successful" do
          get :service_index, :service_type => service_type.pluralize
          response.should be_success
        end

        it "should have the right title" do
          get :service_index, :service_type => service_type.pluralize
          response.should have_selector(
            "title", 
            :content => "#{@base_title}#{service_type.pluralize.capitalize}"
          )
        end

        it "should have a link to each service" do
          get :service_index, :service_type => service_type.pluralize
          Service.send(service_type.pluralize).each do |service|
            response.should have_selector("a", :href => service_path(service_type.pluralize, service),
                                               :content => service.name)
          end
        end
      end
    end
  end

  describe "GET 'show'" do
    it "should be successful" do
      get 'show'
      response.should be_success
    end
  end
end

get操作似乎成功运行,因为"should be successful"测试全部通过,但其他操作失败,因为它无法在页面上找到正确的选择器。奇怪的是,返回的HTML转储似乎不是来自我的应用程序。

  1) ServicesController GET 'index' should have the right title
     Failure/Error: response.should have_selector(
       expected following output to contain a <title>Services</title> tag:
       <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
     # ./spec/controllers/services_controller_spec.rb:12:in `block (3 levels) in <top (required)>'

  2) ServicesController GET 'index' should have a link to each service
     Failure/Error: response.should have_selector("a", :href => service_type_path(service_type.pluralize),
       expected following output to contain a <a href='/restaurants'>Restaurants</a> tag:
       <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
     # ./spec/controllers/services_controller_spec.rb:21:in `block (4 levels) in <top (required)>'
     # ./spec/controllers/services_controller_spec.rb:20:in `each'
     # ./spec/controllers/services_controller_spec.rb:20:in `block (3 levels) in <top (required)>'

  3) ServicesController GET 'service_index' restaurants should have the right title
     Failure/Error: response.should have_selector(
       expected following output to contain a <title>Restaurants</title> tag:
       <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
     # ./spec/controllers/services_controller_spec.rb:37:in `block (5 levels) in <top (required)>'

  4) ServicesController GET 'service_index' restaurants should have a link to each service
     Failure/Error: response.should have_selector("a", :href => service_path(service_type.pluralize, service),
       expected following output to contain a <a href='/restaurants/foo'>Foo</a> tag:
       <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
     # ./spec/controllers/services_controller_spec.rb:46:in `block (6 levels) in <top (required)>'
     # ./spec/controllers/services_controller_spec.rb:45:in `block (5 levels) in <top (required)>'

我希望看到这确实是一个失败的是我的HTML应用程序模板的完全转储,该模板在HTML 5中标记。相反,我只获得标记为HTML 4的页面的doctype。

任何想法会导致什么?

作为次要问题,我无法想办法打开Webrat中的日志记录来查看实际发生的HTTP活动。我怎么能这样做?

1 个答案:

答案 0 :(得分:0)

是的,没关系。我是个白痴,忘了把render_views放在我的测试中,这就是为什么它没有渲染视图