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我正在尝试使用 Factory Girl 测试一个模型，该模型在 has_many 上具有 validates_presence_of ：通过关联。尽管表单运行良好，并且我可以编写一个手动填写表单的测试，但我无法获得有效的工厂。此测试一直失败：

it "has a valid work factory" do
    work = FactoryGirl.build(:work)
    work.should be_valid
end

这是错误消息：

Work has a valid work factory
     Failure/Error: work.should be_valid
       expected #<Work id: nil, name: "Client Website", date: "2013-06-03 16:13:08", client: #<Client id: 1, name: "Client Number 4", client_code: "CN4", created_at: "2013-06-04 16:13:12", updated_at: "2013-06-04 16:13:12">, description: "A great new website for the client.", image: "/image.jpg", service: "Web", featured: true, created_at: nil, updated_at: nil> to be valid, but got errors: Client can't be blank

这是我的 factory.rb 文件：

FactoryGirl.define do
  factory :user do
    sequence(:email)        { |n| "person_#{n}@example.com"}
    password                "secret"
    password_confirmation   "secret"

    factory :admin do
      after(:create) {|user| user.add_role(:admin)}
    end
  end

  factory :client do
    sequence(:name)          { |n| "Client Number #{n}"}
    sequence(:client_code)   { |n| "CN#{n}"}
  end

  factory :work do
    name            "Client Website"
    client
    date            1.day.ago
    description     "A great new website for the client."
    image           "/image.jpg"
    service         "Web"
    featured        true
  end  
end

我的工作模式：

class Work < ActiveRecord::Base
  attr_accessible :client, :client_ids, :date, :description, :featured, :image, :name, :service

  validates_presence_of :client_ids
  validates_presence_of :date, :image, :name
  validates_length_of   :description, :in => 5..500, :allow_blank => true
  validates_length_of   :name, :in => 5..50

  has_many :postings
  has_many :clients, :through => :postings  
end

我的客户模型：

class Client < ActiveRecord::Base
  attr_accessible :client_code, :name

  validates_presence_of     :client_code, :name
  validates_uniqueness_of   :name
  validates_length_of       :client_code, :is => 3
  validates_length_of       :name, :in => 5..50

  has_many  :postings
  has_many  :works, :through => :postings  
end

看起来这个测试应该通过，因为工厂是与客户一起建造的。但我不确定为什么该验证会导致错误。

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1 回答 1

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错误消息说expected ..... to be valid, but got errors: Client can't be blank

work = FactoryGirl.build(:work) # this returns an unsaved object

通过使用build您还没有保存对象。对象是nil。如果一个对象是nil它是blank

您想像这样在创建时保存对象

work = FactoryGirl.create(:work) # this returns a saved object

现在

work.should be_valid

应该通过

更新：

我没有仔细看你的“factories.rb”

factory :work do
  name            "Client Website"
  client
  date            1.day.ago
  description     "A great new website for the client."
  image           "/image.jpg"
  service         "Web"
  featured        true
end

您client在工厂中的属性work实际上是空白的。这不会通过验证并且不会保存对象。像这样填写client工厂或传递一些东西

work = FactoryGirl.create(:work, client: "fill in with client")
于 2013-06-04T20:40:42.523 回答