Factory Boy for test data in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Factory class from factory_boy.

Django

from factory import [1]

Drag options to blanks, or click blank then click option'

ABaseFactory

BModelFactory

CFactory

DTestFactory

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ModelFactory' which is not the base class.

Trying to import from 'factory_boy' instead of 'factory'.

The main class to create factories in Factory Boy is Factory. You import it directly from factory.

2fill in blank

medium

Complete the code to define a factory for a Django model named Book.

Django

class BookFactory([1]):
    class Meta:
        model = Book

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ADjangoModelFactory

BFactory

CModelFactory

DBaseFactory

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Factory' which is too generic for Django models.

Using 'ModelFactory' which does not exist.

For Django models, Factory Boy provides DjangoModelFactory as the base class to handle Django-specific features.

3fill in blank

hard

Fix the error in the factory field definition to generate a sequence of titles.

Django

title = factory.[1](lambda n: f"Book {n}")

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ALazyAttribute

BFaker

CSubFactory

DSequence

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'LazyAttribute' which does not provide a sequence number.

Using 'Faker' which generates random data, not sequences.

The Sequence field generates unique values by passing an increasing number to the lambda function.

4fill in blank

hard

Fill both blanks to create a factory field that uses Faker to generate an author name.

Django

author = factory.[1]('name')

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ALazyFunction

BFaker

Cfaker

Dlazy_attribute

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'lazy_attribute' which is not a submodule of factory.

Using 'LazyFunction' which is unrelated here.

The correct syntax is factory.Faker('name') to generate fake author names.

5fill in blank

hard

Fill all three blanks to define a factory with a post-generation hook that adds tags to a book instance.

Django

class BookFactory(factory.[1]):
    class Meta:
        model = Book

    @factory.[2]
    def add_tags(self, create, extracted, [3]):
        if not create:
            return
        if extracted:
            for tag in extracted:
                self.tags.add(tag)

Drag options to blanks, or click blank then click option'

ADjangoModelFactory

Bpost_generation

Cself

DLazyAttribute

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Factory' instead of 'DjangoModelFactory' for the base class.

Using 'post_generation' as a method name instead of a decorator.

Naming the instance parameter something other than 'self'.

The factory class should inherit from DjangoModelFactory. The decorator for post-generation hooks is post_generation. The method parameter for the instance is conventionally named self.