RoR 和 Rspec 使用 while 循环设置测试

Question

好的，所以我想创建一个测试来检查所有页面是否都有特定的标题。但是我认为如果我可以在array 中包含页面标题会很好，这样我就不必为每个页面复制块。它允许我通过修改 pages array 来测试其他页面。

我遇到的问题是测试中没有插入页面变量。那么这是语法错误还是 Rspec 不允许在 it should do... 块内插值？

describe "LayoutLinks" do

    page = ["home", "contact", "about", "help"]
    i = page.count
    x = 0

    while x < i  
        it "should have a #{page[x]} page" do
        get "#{page[x]}"
        response.should have_selector("title", :content => "#{page[x]}")
        end
    x += 1
    end

end

测试显示以下故障：

  1) PagesController LayoutLinks should have a help page
     Failure/Error: get "#{page[x]}"
     ActionController::RoutingError:
       No route matches {:controller=>"pages", :action=>""}
     # ./spec/controllers/layout_links_spec.rb:14:in `block (3 levels) in <top (required)>'

  2) PagesController LayoutLinks should have a contact page
     Failure/Error: get "#{page[x]}"
     ActionController::RoutingError:
       No route matches {:controller=>"pages", :action=>""}
     # ./spec/controllers/layout_links_spec.rb:14:in `block (3 levels) in <top (required)>'

  3) PagesController LayoutLinks should have a about page
     Failure/Error: get "#{page[x]}"
     ActionController::RoutingError:
       No route matches {:controller=>"pages", :action=>""}
     # ./spec/controllers/layout_links_spec.rb:14:in `block (3 levels) in <top (required)>'

  4) PagesController LayoutLinks should have a home page
     Failure/Error: get "#{page[x]}"
     ActionController::RoutingError:
       No route matches {:controller=>"pages", :action=>""}

这里的失败错误很明显。它不应该说得到"#{page[x]}"，而应该是get home 和get about，等等......

我该如何补救？谢谢您的帮助。非常感谢:)

Answer 1

尝试以下方法：

describe "LayoutLinks" do
  %w(home contact about help).each do |page|
    it "should have a #{page} page" do
      get page
      response.should have_selector("title", content: page)
    end
  end
end

%w 创建一个字符串数组（空格变成逗号，所以你得到 ["home", "contact", etc]）