What's the difference between Factory Boy and Factory Girl?

What's the difference between Factory Boy and Factory Girl?

Factory Boy is a Python library for creating test fixtures, while Factory Girl is its Ruby counterpart. They serve similar purposes in their respective languages.

Can you give me an example of how to use Factory Boy?

Sure! You can define a factory for a model like this:

import factory

class UserFactory(factory.Factory):
    class Meta:
        model = User

    username = factory.Faker('user_name')
    email = factory.Faker('email')

Then, you can create a user instance with UserFactory().

What about Factory Girl? How does it work?

Factory Girl, now known as Factory Bot, allows you to define factories in Ruby. Here's a simple example:

FactoryBot.define do
  factory :user do
    username { Faker::Internet.username }
    email { Faker::Internet.email }
  end
end

You can create a user with FactoryBot.create(:user).

Which one is more popular?

Both are popular in their respective communities, but Factory Bot (formerly Factory Girl) has a larger user base in Ruby on Rails applications.