如何在Factory Girl中创建/构建工厂的多个实例?
如何创建同一类的多个记录或多个工厂?
我试过了:
Factory.define :user do |user| user.email "someuser@somesite.com" user.password "somepassword" user.email "another_existing_user@somesite.com" user.password "somepassword" end
和
Factory.define :user do |user| user.email "someuser@somesite.com" user.password "somepassword" end Factory.define :user do |user| user.email "another_existing_user@somesite.com" user.password "somepassword" end
但它不起作用 – Attribute already defined: email
。
使用工厂有两个步骤,第一步是定义它们,第二步是使用它们。
1)定义他们:
Factory.define :user do |u| u.sequence(:email) { |n| "mike#{n}@awesome.com"} u.password "password123" end
2)使用他们:
一个例子是在规范中使用它们:
@user1 = Factory(:user) #has an email of mike1@awesome.com @user2 = Factory(:user) # has an email of mike2@awesome.com due to sequences in FG
我会看这个Railscast以获得更好的感觉。
这是一个较旧的问题和答案,但这是我在Google上找到的第一个结果,所以我想我会在标题构建或创建多个记录下的文档中添加以下内容:
created_users = FactoryGirl.create_list(:user, 25) #creates 25 users twenty_year_olds = FactoryGirl.build_list(:user, 25, date_of_birth: 20.years.ago) #builds 25 users, sets their date_of_birth
在我刚刚引用的示例中,每个用户都有不同的用户名,只要在工厂定义中使用该sequence
(参见上面的Mike Lewis答案)。
如果您希望来自同一(基础)工厂的记录具有不同的值,则有几个选项。
A)覆盖已定义的属性
factory :post, aliases: [:approved_post] do title "A title" approved true end approved_post = create(:approved_post) unapproved_post = create(:post, approved: false)
B)inheritance
factory :post do title "A title" factory :approved_post do approved true end factory :unapproved_post do approved false end end approved_post = create(:approved_post) unapproved_post = create(:unapproved_post)
C)序列
factory :user do sequence(:email, 1000) { |n| "person#{n}@example.com" } end
D)特征
factory :post do title "My awesome title" trait(:approved) { approved true } trait(:unapproved) { approved false } trait :with_comments do after(:create) do |instance| create_list :comment, 2, post: instance end end factory :approved_post_with_comments, traits: [:approved, :with_comments] end approved_post_with_comments = create(:approved_post_with_comments) unapproved_post_with_no_comments = create(:post, :unapproved, title: "Test") post_with_title = build(:post)
可以组合这些方法。 此示例使用列表和对与序列和覆盖。
factory :user do sequence(:username) { |n| "user#{n}" } date_of_birth Date.today end # Build a pair and a list of users. two_newborns = build_pair(:user) ten_young_adults = build_list(:user, 10, date_of_birth: 20.years.ago) # Create a pair and a list of users. two_young_adults = create_pair(:user, date_of_birth: 20.years.ago) ten_newborns = create_list(:user, 10)
我希望尽可能使用特征,我觉得它们很灵活。
使用当前的factory_girl_rails
4.6.0,我遇到了某种相关的问题,即build(:model)
总是返回对象的同一个实例。 使用sequence(:name) ...
没有解决这个问题。 所以我生成了一些这样的假(空)特征:
FactoryGirl.define do factory :model do ... # fake traits to urge factory_girl to always return a new instance: (1..5).each {|n| trait "var#{n}".to_sym } end end
然后调用build(:model, :var1), build(:model, :var2)...