如何解决在测试Rails 3控制器时遇到一些意外错误
| 我有这样定义的服务模型: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
我决定对不同的服务不使用传统的STI模式,因为它们都将具有相同的属性,否则行为将相同。有一个父模型,但它仅用于规范化目的,Web用户无需了解它。就应用程序而言,存在服务类型,以及这些服务下的特定服务。所以基本上我想要这样的URL:
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
所以我创建了这样的路由模式:
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/,: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
当我在浏览器中对其进行测试时,所有这些均按预期工作。但是,当我尝试在Rspec2中运行集成测试时,我得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
动作似乎成功运行,因为\"should be successful\"
测试全部通过,但其他人则失败,因为它在页面上找不到正确的选择器。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\",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\",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)>\'
我希望看到这是否确实是失败的原因是我的HTML应用程序模板的完整转储,该模板在HTML 5中进行了标记。相反,我只得到标记为HTML 4的页面的文档类型。
任何想法会导致什么?
作为第二个问题,我找不到任何方法可以打开Webrat的日志来查看实际发生的HTTP活动。我怎样才能做到这一点?
解决方法
是的,没关系。我是个白痴,忘了把test9放进测试中,这就是为什么它没有渲染视图。
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