Factory Boy aim is to replace static and hard to maintain complex object fixtures (test data).

This is test data created with factory boy (We need a 200€, paid order, shipping to australia, for a VIP customer):

def test_with_factory_boy(self):
	order = OrderFactory(
		amount=200,
		status='PAID',
		customer__is_vip=True,
		address__country='AU',
	)

This is data created without factory boy:

def test_without_factory_boy(self):
	address = Address(
		street="42 fubar street",
		zipcode="42Z42",
		city="Sydney",
		country="AU",
	)
	customer = Customer(
		first_name="John",
		last_name="Doe",
		phone="+1234",
		email="john.doe@example.org",
		active=True,
		is_vip=True,
		address=address,
	)

$ pip install factory_boy

from factory.mongoengine import MongoEngineFactory
# ...
class User(Document):
# ...
class UserFactory(MongoEngineFactory):

Factories declare a set of attributes for an object. The class of this object must be defined in the model attribute of a subclass Meta:

import factory
import models
 
class UserFactory(factory.Factory):
    class Meta:
        model = models.User
 
    first_name = 'John'
    last_name = 'Doe'
    admin = False

In previous versions the class Meta with its attribute model it is substituted by FACTORY_FOR attribute.