搜索电影的用户故事features/AddTMDbSearch.feature

Feature: User can add movie by searching for it in The Movie Database (TMDb)

  As a movie fan
  So that I can add new movies without manual tedium
  I want to add movies by looking up their details in TMDb

Scenario: Try to add nonexistent movie (sad path)

  Given I am on the RottenPotatoes home page
  Then I should see "Search TMDb for a movie"
  When I fill in "Search Terms" with "Movie That Does Not Exist"
  And I press "Search TMDb"
  Then I should be on the RottenPotatoes home page
  And I should see "'Movie That Does Not Exist' was not found in TMDb."

可以试着运行

cucumber features/AddTMDbSearch.feature

为了使得测试通过，我们修改app/views/movies/index.html.haml,在末尾添加

%h1 Search TMDb for a movie

= form_tag :action=>:search_tmdb do

  = label :search,:terms, 'Search Terms'
  = text_field_tag :search_terms
  = submit_tag 'Search TMDb'

既然添加了action，必须修改路由config/routes.rb

post 'movies/search_tmdb',action: :search_tmdb,controller: :movies

同时在控制器中添加操作到app/controllers/movies_controller.rb

  def search_tmdb
    # hardwire to simulate failure
    flash[:warning] = "'#{params[:search_terms]}' was not found in TMDb."
    redirect_to movies_path
  end

再次运行

cucumber features/AddTMDbSearch.feature

我们思考以下场景，用户搜索一个已存在的电影会怎样，这时候用户首先打开页面，确保存在一个搜索框，这两个步骤和失败路径一摸一样。因此我们想这样重复的步骤是否需要精简（敏捷的要诀，去掉重复内容）。解决方案是：引入Background部分，修改features/AddTMDbSearch.feature成如下：

Feature: User can add movie by searching for it in The Movie Database (TMDb)

  As a movie fan
  So that I can add new movies without manual tedium
  I want to add movies by looking up their details in TMDb

Background: Start from the Search form on the home page

  Given I am on the RottenPotatoes home page
  Then I should see "Search TMDb for a movie"

Scenario: Try to add nonexistent movie (sad path)

  When I fill in "Search Terms" with "Movie That Does Not Exist"
  And I press "Search TMDb"
  Then I should be on the RottenPotatoes home page
  And I should see "'Movie That Does Not Exist' was not found in TMDb."

Scenario: Try to add existing movie (happy path)

  When I fill in "Search Terms" with "Inception"
  And I press "Search TMDb"
  Then I should be on the "Search Results" page
  And I should not see "not found"
  And I should see "Inception"