SaaS Hw4的問題

Question

我正在從Edx.org獲得SaaS的HW4。我在運行情景2和3的黃瓜時遇到了問題。當我嘗試使用Web應用程序時，它在這兩種情況下效果很好。但運行黃瓜，我得到這樣的輸出：

Scenario: find movie with same director      #  features/search_movies_director.feature:22 
Deprecated: please use #source_tags instead. 
Given I am on the details page for "Star Wars"    # features/step_definitions/web_steps.rb:44 
When I follow "Find Movies With Same Director"    # features/step_definitions/web_steps.rb:56 
Then I should be on the Similar Movies page for "Star Wars" # features/step_definitions/web_steps.rb:230 
    No route matches {:action=>"director", :controller=>"movies"} (ActionController::RoutingError) 
    ./features/support/paths.rb:20:in `path_to' 
    ./features/step_definitions/web_steps.rb:233:in `/^(?:|I)should be on (.+)$/' 
    features/search_movies_director.feature:25:in `Then I should be on the Similar Movies page for "Star Wars"' 
And I should see "THX-1138"         # features/step_definitions/web_steps.rb:105 
But I should not see "Blade Runner"       # features/step_definitions/web_steps.rb:123 

Scenario: can't find similar movies if we don't know director (sad path) # features/search_movies_director.feature:29 
Deprecated: please use #source_tags instead. 
Given I am on the details page for "Alien"        # features/step_definitions/web_steps.rb:44 
Then I should not see "Ridley Scott"         # features/step_definitions/web_steps.rb:123 
When I follow "Find Movies With Same Director"       # features/step_definitions/web_steps.rb:56 
Then I should be on the home page          # features/step_definitions/web_steps.rb:230 
    expected: "/movies" 
     got: "/movies/3/director" (using ==) (RSpec::Expectations::ExpectationNotMetError) 
    ./features/step_definitions/web_steps.rb:233:in `/^(?:|I)should be on (.+)$/' 
    features/search_movies_director.feature:33:in `Then I should be on the home page' 
And I should see "'Alien' has no director info"      # features/step_definitions/web_steps.rb:105 

在這兩種情況下，當我手動執行此情況下，該行爲是正確的。問題是什麼？

感謝

當我執行 '耙路線'，我得到：

director_movie GET /movies/:id/director(.:format) {:action=>"director", :controller=>"movies"} 
    movies GET /movies(.:format)    {:action=>"index", :controller=>"movies"} 
      POST /movies(.:format)    {:action=>"create", :controller=>"movies"} 
new_movie GET /movies/new(.:format)   {:action=>"new", :controller=>"movies"} 
edit_movie GET /movies/:id/edit(.:format)  {:action=>"edit", :controller=>"movies"} 
    movie GET /movies/:id(.:format)   {:action=>"show", :controller=>"movies"} 
      PUT /movies/:id(.:format)   {:action=>"update", :controller=>"movies"} 
      DELETE /movies/:id(.:format)   {:action=>"destroy", :controller=>"movies"} 

在這裏，我可以看到路線「director_movie GET /movies/:id/director(.:format）{ ：action =>「導演」，：控制器=>「電影」}「，所以我不明白爲什麼第一個場景失敗。

在第二個，它預計「/電影」，並得到「/電影/ 3 /導演」。這裏是從控制器的代碼段：

def director 
mov = Movie.find(params[:id]) 
dir = mov.director 
if (dir == nil) 
    flash[:notice] = "'#{mov.title}' has no director info" 
    redirect_to movies_path 
else 
    @movies = Movie.find_all_by_director(dir) 
end 
end 

但是，當我手動模擬相同的步驟，我看到的提示信息，並得到重定向到「/電影」 ...爲什麼黃瓜沒有得到同樣的？

對不起，我的英語......謝謝！

Answer 1

問題是你沒有檢查導演是否也是空的。在這種情況下，重定向到主頁不會發生，並且場景失敗。爲了解決這種情況，您需要檢查無或爲空：

if (dir.nil? || dir.empty?) 
    flash[:notice] = "'#{mov.title}' has no director info" 
    redirect_to movies_path 
else 
    @movies = Movie.find_all_by_director(dir) 
end