Question

我在Michael Hartl的RoR教程的第4章，并且在使用rspec和使用full_title帮助函数时遇到了一些麻烦。在本教程的第4.1部分中，我有如下的帮助程序代码。它的目的是使我的帮助，联系，家庭和页面不需要在每个视图上提供标题。

module ApplicationHelper

# Returns the full title on a per-page basis.
def full_title(page_title)
    base_title = "Ruby on Rails Tutorial Sample App"
    if page_title.empty?
        base_title
    else
        "#{base_title} | #{page_title}"
    end
end

端

我的布局页面看起来像

<!DOCTYPE html>
<html>
  <head>
    <title><title><%= full_title(yield(:title)) %></title></title>
    <%= stylesheet_link_tag    "application", :media => "all" %>
    <%= javascript_include_tag "application" %>
    <%= csrf_meta_tags %>
  </head>
  <body>
    <%= yield %>
  </body>
</html>

和我的static_pages_spec.rb文件如下所示：

require 'spec_helper'

describe "Static Pages" do

  include ApplicationHelper


    describe "Home page" do

        it "should have the h1 'Sample App'" do
            visit '/static_pages/home'
            page.should have_selector('h1', :text => 'Sample App')
      end
      it "should have the base title 'Home'" do
        visit '/static_pages/home'
        page.should have_selector('title',
                              :text => "Ruby on Rails Tutorial App")

      end
      it "should not have a custom page title" do
        visit '/static_pages/home'
        page.should_not have_selector('title', :text => '| Home')
      end
  end

  describe "Help page" do

    it "should have the h1 'Help'" do
        visit '/static_pages/help'
        page.should have_selector('h1', :text => 'Help')
    end
    it "should have the right title 'Help'" do
        visit '/static_pages/help'
        page.should have_selector('title',
                              :text => "#{base_title} | Help")
    end
  end

  describe "About us" do

    it "should have the h1 'About Us'" do
      visit '/static_pages/about'
      page.should have_selector("h1", :text => "About Us")
    end
    it "should have the right title 'About Us'" do
        visit '/static_pages/about'
        page.should have_selector('title',
                              :text => "#{base_title} | About Us")
    end
  end

  describe "Contact" do

    it "should have the h1 'Contact'" do
      visit '/static_pages/contact'
      page.should have_selector('h1', :text => "Contact")
    end
    it "should have the right title 'Contact'" do
        visit '/static_pages/contact'
        page.should have_selector('title',
                              :text => "#{base_title} | Contact")
    end
  end
end

然而，当我运行rspec时，我得到4次测试失败。其中3个是指联系人，关于我们和帮助页面，并说出了

的内容

失败/错误:: text =＆gt; “#base_title} |联络”） NameError：未定义的局部变量或方法“base_title”for＃

谁能告诉我这里出了什么问题？我怀疑它与辅助函数和Rspec无法识别的base_title变量有关，但根据教程，测试套件应该全部传递绿色。

更新：我弄清楚为什么其中一项测试失败了。但我仍然对这3个视图有问题，说base_title是一个未定义的方法。

Answer 1

在下面的测试中，rspect如何知道什么是base_title（最后一行）。

describe "Help page" do

  it "should have the h1 'Help'" do
    visit '/static_pages/help'
    page.should have_selector('h1', :text => 'Help')
  end
  it "should have the right title 'Help'" do
    visit '/static_pages/help'
    page.should have_selector('title',
                          :text => "#{base_title} | Help")
  end
end

您尚未对其进行定义。我猜这就是你的测试失败的原因。

ruby rails helper full_title

1 个答案: