Question

我正在研究ruby.railstutorial.org/ruby-on-rails-tutorial-book。我使用rails 3.2.7，spork，rspec，capybara，launchy和一些警卫：）

我在测试第3章中遇到了一个非常奇怪的问题：

似乎测试不适用于<head> - 标签内的内容。如果我将<title> - 标记放在<body> - 标记内而不是head-tag中，它可以正常工作。当我将<h1> - 标记放在<title>内<head> - 标记上方时，它也有效。这很奇怪，不是吗？

请帮我解决。

示例来自：ruby.railstutorial.org/chapters/static-pages#code:title_test：

it "should have the right title" do
  visit '/static_pages/home'
  page.should have_selector('title',
                    :text => "Ruby on Rails Tutorial Sample App | Home")
end

错误消息是：

故障：

1）静态页面主页的标题应为“Home”        失败/错误：page.should have_selector（'title'，：text =＆gt;'| Home'）        水豚:: ExpectationNotMet：          期待找到带有文字“| Home”的css“title”，但没有匹配。还找到了“”，它与选择器匹配但不是全部   过滤器。        './spec/requests/static_pages_spec.rb:15:in'块（3级）in'

那个正在运作：

it "should have the h1 'Sample App'" do
  visit '/static_pages/home'
  page.should have_selector('h1', :text => 'Sample App')
end

呈现的HTML文件：

<!DOCTYPE html>
<html>
<head>
  <title>Ruby on Rails Tutorial Sample App | Home</title>
  <!-- some css,js stuff -->
</head>
<body>

<h1>Sample App</h1>
<p>
  This is the home page for the
  <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
  sample application
</p>

</body>
</html>

由于

编辑：你可以在github上找到我正在使用的文件： https://github.com/farukg/sample_app/

spec文件的链接： https://github.com/farukg/sample_app/blob/master/spec/requests/static_pages_spec.rb

我所做的解释：主页的代码就像应该的样子。 about页面的代码有自己的布局，里面标题标签上面有一个h1-tag，表明它可以用于某种原因。最后，帮助页面在body标签内部也有标题标签，也适用。

我绝对迷茫，为什么我有这么奇怪的行为？

守卫的完整输出：

> Run all
Bundle already up-to-date
Running all specs
Running tests with args ["--drb", "--colour", "-f", "progress", "-r", "/home/faruk/.rvm/gems/ruby-1.9.3-p125/gems/guard-rspec-1.2.0/lib/guard/rspec/formatters/notification_rspec.rb", "-f", "Guard::RSpec::Formatter::NotificationRSpec", "--out", "/dev/null", "--failure-exit-code", "2", "spec"]...
..FFF.....Neues Fenster in aktueller Browsersitzung erstellt.
.FF..

Failures:

  1) Static pages Home page having application layout should have_selector head title 'Home'
     Failure/Error: page.should have_selector('head title',
     Capybara::ExpectationNotMet:
       expected to find css "head title" with text "Ruby on Rails Tutorial Sample App | Home" but there were no matches. Also found "", which matched the selector but not all filters.
     # ./spec/requests/static_pages_spec.rb:23:in `block (3 levels) in <top (required)>'

  2) Static pages Home page having application layout should have content 'Home'
     Failure/Error: page.should have_content("Ruby on Rails Tutorial Sample App | Home")
       expected there to be text "Ruby on Rails Tutorial Sample App | Home" in "Sample App This is the home page for the Ruby on Rails Tutorial sample application"
     # ./spec/requests/static_pages_spec.rb:30:in `block (3 levels) in <top (required)>'

  3) Static pages Home page having application layout should have css title 'Home'
     Failure/Error: page.should have_css("title", :text => "Ruby on Rails Tutorial Sample App | Home")
     Capybara::ExpectationNotMet:
       expected to find css "title" with text "Ruby on Rails Tutorial Sample App | Home" but there were no matches. Also found "", which matched the selector but not all filters.
     # ./spec/requests/static_pages_spec.rb:36:in `block (3 levels) in <top (required)>'

  4) Static pages about page with own layout should JUST have_selector head title 
     Failure/Error: page.should have_selector('head title')
     Capybara::ExpectationNotMet:
       expected to find css "head title" but there were no matches
     # ./spec/requests/static_pages_spec.rb:86:in `block (3 levels) in <top (required)>'

  5) Static pages about page with own layout should have_selector head title 'About Us'
     Failure/Error: page.should have_selector('head title',
     Capybara::ExpectationNotMet:
       expected to find css "head title" with text "Ruby on Rails Tutorial Sample App | About Us" but there were no matches
     # ./spec/requests/static_pages_spec.rb:93:in `block (3 levels) in <top (required)>'

Finished in 0.66215 seconds
15 examples, 5 failures

Failed examples:

rspec ./spec/requests/static_pages_spec.rb:20 # Static pages Home page having application layout should have_selector head title 'Home'
rspec ./spec/requests/static_pages_spec.rb:27 # Static pages Home page having application layout should have content 'Home'
rspec ./spec/requests/static_pages_spec.rb:33 # Static pages Home page having application layout should have css title 'Home'
rspec ./spec/requests/static_pages_spec.rb:83 # Static pages about page with own layout should JUST have_selector head title 
rspec ./spec/requests/static_pages_spec.rb:90 # Static pages about page with own layout should have_selector head title 'About Us'
Done.

> Neues Fenster in aktueller Browsersitzung erstellt.
Neues Fenster in aktueller Browsersitzung erstellt.

Answer 1

这只是因为<title>位于<head>，所以它不会出现。

使用它，解决了我的问题：

page.should have_selector 'title', :visible => false

提示：您可以应用同样的方法来检查其他<head>元素，例如<meta>，以确保您（并且您会留下）Google友好。

Answer 2

我刚刚在Github上检查了你的项目，似乎你正在使用capybara的边缘版本：

的Gemfile

gem 'capybara', :git => 'git://github.com/jnicklas/capybara.git'

Gemfile.lock的

GIT
  remote: git://github.com/jnicklas/capybara.git
  revision: e561d249555195cdd0e9251246fc75aae876f833
  specs:
      capybara (2.0.0.beta2)
      mime-types (>= 1.16)
      nokogiri (>= 1.3.3)
      rack (>= 1.0.0)
      rack-test (>= 0.5.4)
      selenium-webdriver (~> 2.0)
      xpath (~> 1.0.0.beta1)

如果不出意外，我敢说这是你问题的原因。（当然，在更新capybara以使用边缘版本后，我的reference project全部被打破了）

因此，除非您热衷于帮助Capybara 2进行beta测试，否则您最好坚持列出here所列的1.1.2版本。

Answer 3

如果你使用的是Capybara 2，你可以使用have_title这样的方法：

page.should have_title("Ruby on Rails Tutorial Sample App | Home")

Answer 4

你可以测试一下：

page.should have_selector('head title',
                          :text => "Ruby on Rails Tutorial Sample App | Home")

Answer 5

目前最简单的方法是从页面html访问Title元素，这将返回标题：

page.html.match(/<title>(.*)<\/title>/)[1].to_s

不太理想，因为它是在html（!!）上使用正则表达式但是会起作用。可能最好写一个辅助函数

# put in spec/support/utilities.rb
def page_title(page)
  page.html.match(/<title>(.*)<\/title>/)[1].to_s
end

然后您的测试可以写成

page_title(page).should eq( "Ruby on Rails Tutorial Sample App | Home" }

Answer 6

这对我来说也是新的，在推迟这么久之后。感谢stackoverflow，我能够在描述之后立即在spec文件的顶部修复一些带有render_views的测试。我从

传递测试

 describe "GET 'home'" do
   it "returns http success" do
     get 'home'
     response.should be_success
 end

但是没有使用布局我得到了这个错误：text 水豚:: ExpectationNotMet：期待找到文本“Home | Ruby on Rails Tutorial Sample App”的css“title”，但没有匹配。但除此之外，在gem文件中使用gem'capybara'，'1.1.2'之后我的测试通过。但我也在路线中使用get'home'作为动作匹配。我希望这会有所帮助。

使用specs测试，来自railstutorial第3章的水豚不起作用（have_selector（'title'，：text =＆gt;'| Home'））

6 个答案: