用shoulda和factory_girl測試REST - destroy

Question

我正在開發用於shoulda和factory_girl的REST測試。下面

context "on :delete to :destroy" do 
    setup do 
     @controller = NewsArticlesController.new 
     @request = ActionController::TestRequest.new 
     @response = ActionController::TestResponse.new 

     @news_article = Factory.create(:news_article) 

    end 

    should "destroy new NewsArticle" do 
     assert_difference('NewsArticle.count', -1) do 
     delete :destroy, :id => @news_article.id 
     end 
    end 

    should_redirect_to news_articles_path 
    end 

結果代碼，我看到

1) Error: 
test: on :delete to :destroy should redirect to index. (NewsArticlesControllerTest): 
ArgumentError: block not supplied 
    c:/develop/ruby/lib/ruby/gems/1.8/gems/thoughtbot-shoulda-2.10.2/lib/shoulda/action_controller/macros.rb:201:in `instance_eval' 
    c:/develop/ruby/lib/ruby/gems/1.8/gems/thoughtbot-shoulda-2.10.2/lib/shoulda/action_controller/macros.rb:201:in `__bind_1248853182_16800 
0' 
    c:/develop/ruby/lib/ruby/gems/1.8/gems/thoughtbot-shoulda-2.10.2/lib/shoulda/context.rb:351:in `call' 
    c:/develop/ruby/lib/ruby/gems/1.8/gems/thoughtbot-shoulda-2.10.2/lib/shoulda/context.rb:351:in `test: on :delete to :destroy should redirect to index. ' 

你能告訴我PLZ - 什麼是錯，以及如何我可以修改測試，以使他們的工作吧？

UPD：路線看起來很好

news_articles GET /news(.:format)     {:controller=>"news_articles", :action=>"index"} 

Answer 1

也許你應該調用刪除時使用符號和POST方法：

assert_difference 'Article.count', -1 do 
    post :delete, :id => ... 
    end 

（從http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#M001427參考）

Answer 2

問題是與should_redirect_to現在使用塊來評估重定向代碼。可悲的是，無論是thinkbot wiki還是github上的自述文件都反映了這一點，並且仍然包含舊的示例。

正確的代碼

should_redirect_to "news articles page" { news_articles_path } 

其中第一個參數只是一個文字描述（它不eval'd與舊版本）用於生成測試名稱，所以你得到一個測試名稱像「應該重定向到新聞文章頁面」

Answer 3

tkramar液點在正確的方向，但我不得不寫代碼：

should_redirect_to("news articles page") { news_articles_path } 

也看到http://dev.thoughtbot.com/shoulda/classes/Shoulda/ActionController/Macros.html#M000015