Factory Bot has seen a handful of changes over the past six weeks since we released 2.0.0. Some of the highlights:
Simple association syntax
factory :user do
name "John doe"
end
factory :post do
author :factory => :user
end
Traits
trait :male do
gender "Male"
end
trait :admin do
admin true
end
factory :user do
factory :male_user, :traits => [:male]
factory :admin, :traits => [:admin]
factory :male_admin_user, :traits => [:male, :admin]
end
Transient attributes
factory :user do
rockstar(true).ignore
name { "Johnny#{" Rockstar" if rockstar}" }
end
> FactoryBot.create(:user).name # "Johnny Rockstar"
> FactoryBot.create(:user, :rockstar => false).name # "Johnny"
Change associations to build instead of create
factory :profile do
sequence(:username) {|n| "user-#{n}" }
end
factory :user do
profile :method => :build
end
Factory modification
FactoryBot.define do
factory :user do
name "John Doe"
sequence(:email) {|n| "user-#{n}@example.com" }
end
end
FactoryBot.modify do
factory :user do
email { "#{name.downcase.underscore}@example.com" }
end
end
Factory reloading (handy in a console)
FactoryBot.reload # reloads all factories, sequences, and traits
Apart from these features, we’ve ensured that Factory Bot processes different attributes (static attributes, dynamic attributes) in a reasonable order, verified it works on Rails 3.1.0, upgraded the test suite to use Mocha + Bourne instead of RR, and a handful of other handy bug fixes.
Grab Factory Bot 2.1.0 and make testing easier!
Disclaimer:
Looking for FactoryGirl? The library was renamed in 2017. Project name history can be found here.
