视图在浏览器中正确呈现，但辅助方法测试失败？
我有一个简单的视图和一个定义标题的助手。如果我在浏览器中拉出视图，一切正常，但 rspec 测试失败。这是我所拥有的：
这是我的测试：
describe PagesController do
render_views
before(:each) do
@base_title = "RoR Sample App"
end
describe "GET 'home'" do
it "should be successful" do
get 'home'
response.should be_success
end
it "should have the right title" do
get 'home'
response.should have_selector("title",
:content => @base_title + " | Home")
end
end
end
页面控制器：
class PagesController < ApplicationController
def home
@title = "Home"
end
def contact
@title = "Contact"
end
def about
@title = "About"
end
def help
@title = "Help"
end
end
帮助器：
module ApplicationHelper
# Return a title on a per-page basis.
def title
base_title = "RoR22 Sample App"
if @title.nil?
base_title
else
"#{base_title} | #{@title}"
end
end
end
以及视图：
<!DOCTYPE html>
<html>
<head>
<title><%= title %></title>
<%= stylesheet_link_tag :all %>
<%= javascript_include_tag :defaults %>
<%= csrf_meta_tag %>
</head>
<body>
<%= yield %>
</body>
</html>
它都在浏览器中正确呈现，但是当它到达 <%= title %>行。
1) PagesController GET 'home' should be successful
Failure/Error: get 'home'
ActionView::Template::Error:
undefined local variable or method `title' for #<#<Class:0xabf0b1c>:0xabeec18>
# ./app/views/layouts/application.html.erb:4:in `_app_views_layouts_application_html_erb___418990135_90147100_123793781'
# ./spec/controllers/pages_controller_spec.rb:12:in `block (3 levels) in <top (required)>'
知道我做错了什么吗？
I have a simple view and a helper that defines the title. Everything works fine if I pull up the view in the browser, but the rspec tests fail. Here's what I have:
Here are my tests:
describe PagesController do
render_views
before(:each) do
@base_title = "RoR Sample App"
end
describe "GET 'home'" do
it "should be successful" do
get 'home'
response.should be_success
end
it "should have the right title" do
get 'home'
response.should have_selector("title",
:content => @base_title + " | Home")
end
end
end
The Pages Controller:
class PagesController < ApplicationController
def home
@title = "Home"
end
def contact
@title = "Contact"
end
def about
@title = "About"
end
def help
@title = "Help"
end
end
The helper:
module ApplicationHelper
# Return a title on a per-page basis.
def title
base_title = "RoR22 Sample App"
if @title.nil?
base_title
else
"#{base_title} | #{@title}"
end
end
end
And the view:
<!DOCTYPE html>
<html>
<head>
<title><%= title %></title>
<%= stylesheet_link_tag :all %>
<%= javascript_include_tag :defaults %>
<%= csrf_meta_tag %>
</head>
<body>
<%= yield %>
</body>
</html>
It all renders properly in the browser, but the tests fail when it gets to <%= title %> line.
1) PagesController GET 'home' should be successful
Failure/Error: get 'home'
ActionView::Template::Error:
undefined local variable or method `title' for #<#<Class:0xabf0b1c>:0xabeec18>
# ./app/views/layouts/application.html.erb:4:in `_app_views_layouts_application_html_erb___418990135_90147100_123793781'
# ./spec/controllers/pages_controller_spec.rb:12:in `block (3 levels) in <top (required)>'
Any idea what I'm doing wrong?
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评论（3）
这是 spork 的一个已知问题。您可以在 prefork 块中使用此解决方法：
This is a known issue with spork. You can use this workaround in your prefork block:
这就是您的
application.html.erb。它在PagesHelper中看不到该方法，您需要将该方法放入ApplicationHelper中。只有PagesController呈现的视图才能看到PagesHelper。在助手中显式添加return是个好主意。That's your
application.html.erb. It can't see that method in thePagesHelper, you need to put that method in yourApplicationHelper. Only the views rendered by yourPagesControllercan seePagesHelper. And it's a good idea to explicitly addreturnin your helpers.最终的问题是，我使用
Sporkgem 来加速我的测试，并且出于某种原因spork没有注册ApplicationHelper> 已经改变了。解决方案只是重新启动
sporkgem 并重新运行测试。It ends up the problem is that I was using the
Sporkgem to speed up my testing and for whatever reasonsporkwasn't registering that theApplicationHelperhad changed.The solution was simply to reboot the
sporkgem and rerun the tests.