工廠女孩+ Rspec的：引發ArgumentError：錯誤的參數數目（0 2）

Question

我有一個簡單的餐廳類，看起來像這樣：

module Restaurant 
    class Identity 

     attr_reader :name, :location 

     def initialize (name, location) 
      @name = name 
      @location = location 
     end 

    end 
end 

我廠是這樣的：

FactoryGirl.define do 
    factory :restaurant, :class => Restaurant::Identity do |f| 
     f.name "Alfredos" 
     f.location "Andheri" 
    end 
end 

而我的測試是這樣寫的：

describe Restaurant::Identity do 

subject { build(:restaurant) } 

its(:name) {should_not be_nil} 
its(:location) {should_not be_nil} 

end 

但是當我運行它，我得到

1) Restaurant::Identity name 
    Failure/Error: subject { build(:restaurant) } 
    ArgumentError: 
     wrong number of arguments (0 for 2) 
    # ./lib/restaurant.rb:7:in `initialize' 
    # ./spec/restaurant_spec.rb:9:in `block (2 levels) in <top (required)>' 
    # ./spec/restaurant_spec.rb:11:in `block (2 levels) in <top (required)>' 

這是怎麼發生的？我究竟做錯了什麼？

Answer 1

好了，所以解決的辦法是在你的工廠女孩​​設置爲使用initialize_with：

FactoryGirl.define do 
    factory :restaurant, :class => Restaurant::Identity do |f| 
     f.name "Alfredos" 
     f.location "Andheri" 
     initialize_with { new(name, location) } # add this line 
    end 
end 

裁判：https://github.com/thoughtbot/factory_girl/blob/master/GETTING_STARTED.md#custom-construction