How do I use Factory Boy for testing in Python?

How do I use Factory Boy for testing in Python?

Factory Boy is a flexible and easy-to-use library for creating test data in Python. You can define factories for your models and use them to generate instances for testing.

Can you show me a simple example of a factory?

Sure! Here's a basic example:

from factory import Factory, Faker

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

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

This creates a UserFactory that generates User instances with random usernames and emails.

How do I create multiple instances at once?

You can create multiple instances by using the create_batch method. For example:

users = UserFactory.create_batch(5)

This will create 5 User instances.

Can I customize the data for specific instances?

Yes, you can override attributes when creating instances. For example:

user = UserFactory(username='custom_user')

This will create a User with the username 'custom_user'.