使用 rSpec 测试机架路由答案

【问题标题】：Testing Rack Routing Using rSpec使用 rSpec 测试机架路由
【发布时间】：2011-08-04 05:58:36
【问题描述】：

我的 routes.rb 中有一条规则：

constraints AssetRestrictor do
  match '*seopath' => SeoDispatcher
end

然后在 lib/seo_dispatcher.rb 中，我有这个：

class SeoDispatcher
  AD_KEY = "action_dispatch.request.path_parameters"

  def self.call(env)
    seopath = env[AD_KEY][:seopath]

    if seopath
      params = seopath.split('/')           # get array of path components
      env[AD_KEY][:id] = params.last        # the real page name is the last element
      env[AD_KEY][:category] = params.first if params.length > 1
    end

    Rails.logger.debug "routing to show #{env[AD_KEY]}"
    PagesController.action(:show).call(env)
    # TODO error handling for invalid paths
  end
end

class AssetRestrictor
  EXCEPTION_FILES = ['javascripts', 'stylesheets', 'autodiscover']
  def self.matches?(request)
    return false if request.method == 'POST'  # no post requests are SEO-ed
    EXCEPTION_FILES.each do |ex|
      return false if request.url.include?(ex)
    end
    true
  end
end

基本上，整个事情都有效。这个想法是剥离最后一个路径组件并将其与页面的 slug 匹配。搜索引擎优化的人告诉我，这是欺骗搜索引擎让你排名更高的好方法。

撇开我那刻薄的 cmets 不谈，我在 rSpec 中编写一个运行此代码的测试时遇到了麻烦。我的第一枪是：

describe SeoDispatcher do
  it "routes /insurance/charters-and-guides/how-to-buy-charter-boat-insurance to pages#show :id => how-to-buy-charter-boat-insurance" do
    { :get => "/insurance/charters-and-guides/how-to-buy-charter-boat-insurance"}.should route_to(
      :controller => 'pages',
      :action     => 'show',
      :id         => 'how-to-buy-charter-boat-insurance'
    )
  end
end

但这根本不执行机架调度代码。有谁知道一个人将如何（而不是 cuking）行使代码？我真的很想从 Rack 中引入参数，而不仅仅是 SeoDispatcher.call({"action_dispatch.request.path_parameters" => {:seopath => "/foo/bar"}})。

谢谢！

【问题讨论】：

标签： ruby-on-rails rack

【解决方案1】：

好的，回答了我自己的问题。要求规格：

describe SeoDispatcher do
  describe "seo parsing" do
    it "GET /insurance/charters-and-guides/how-to-buy-charter-boat-insurance displays how-to-buy-charter-boat-insurance (3-part path)" do
      p = Page.make(:title => "how-to-buy-charter-boat-insurance")
      p.save
      get "/insurance/charters-and-guides/how-to-buy-charter-boat-insurance"
      request.path.should == "/insurance/charters-and-guides/how-to-buy-charter-boat-insurance"
      assigns[:page].slug.should == "how-to-buy-charter-boat-insurance"
    end

    it "GET /insurance/charters-and-guides displays guides (2-part path)" do
      p = Page.make(:title => "charters and guides")
      p.save
      get "/insurance/charters-and-guides"
      request.path.should == "/insurance/charters-and-guides"
      assigns[:page].slug.should == "charters-and-guides"
    end

    it "GET /insurance displays insurance (1-part path)" do
      p = Page.make(:title => "insurance")
      p.save
      get "/insurance"
      request.path.should == "/insurance"
      assigns[:page].slug.should == "insurance"
    end
  end
end

如果有人知道更好的方法，请随时告诉我！

【讨论】：