工厂女孩何时在db中创建对象? [英] when does factory girl create objects in db?

问题描述

我正在尝试使用FactoryGirl/shoulda模拟会话(它与固定装置一起工作，但是在使用工厂时遇到了问题).我有以下工厂(用户登录名和电子邮件均具有unique验证):

I am trying to simulate a session using FactoryGirl/shoulda (it worked with fixtures but i am having problems with using factories). I have following factories (user login and email both have unique validations):

Factory.define :user do |u| 
 u.login 'quentin'
 u.email '[e-mail]'
end

Factory.define :session_user, :class => Session do |ses| 
 ses.association :user, :factory => :user
 ses.session_id 'session_user'
end

这是测试

class MessagesControllerTest < ActionController::TestCase

 context "normal user" do
  setup do 
   @request.session[:user_id]=Factory(:user).id
   @request.session[:session_id]=Factory(:session_user).session_id
  end

  should "be able to access new message creation" do
   get :new
   assert_response :success
  end
 end
end

但是当我运行rake test:functionals时，我得到了这个测试结果

but when i run rake test:functionals, I get this test result

 1) Error: 
  test: normal user should be able to access new message creation. (MessagesControllerTest):
  ActiveRecord::RecordInvalid: Validation failed: Account name already exists!, Email already exists!

这意味着当我在测试设置中引用记录时，该记录已存在于db中.这里有我不懂的东西吗? FactoryGirl在启动时如何在db中创建所有工厂?

which means that record already exists in db when I am referring to it in the test setup. Is there something I don't understand here? does FactoryGirl create all factories in db on startup?

rails 2.3.5/shoulda/FactoryGirl

rails 2.3.5/shoulda/FactoryGirl

推荐答案

Factory(:user)是Factory.create(:user)的快捷方式，因此在您的设置中，您将创建两个对象并将其保存到数据库中.

Factory(:user) is a shortcut for Factory.create(:user) so within your setup you are creating two objects and saving them to the database.

Factory.build(:user)将为您创建一个user记录，而不会将其保存到数据库中.

Factory.build(:user) will create you a user record without saving it to the DB.

编辑

在您的session_user工厂中，您正在创建一个用户，然后在测试设置中创建另一个用户. FactoryGirl将创建新的user记录，因为您在session_user工厂中具有关联.

Within your session_user factory you are creating a user and then creating another within your test setup. FactoryGirl will create a new user record because you have the association in the session_user factory.

您可以从session_user对象获取您的user实例，如下所示:-

You can either get your user instance from the session_user object as follows :-

 context "normal user" do
  setup do
   session = Factory(:session_user)  
   @request.session[:session_id] = session.session_id
   @request.session[:user_id] = session.user_id
  end

，或者您可以向user工厂添加一些详细信息，以确保唯一的名称和电子邮件地址，如下所示:-

or you can add some details to the user factory to ensure unique name and email addresses as follows :-

Factory.define :user do |u| 
 u.sequence(:login) {|n| "quentin#{n}" }
 u.sequence(:email) {|n| "quentin#{n}@example.com"}
end

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