How do I use test fixtures in Django?

How do I use test fixtures in Django?

In Django, test fixtures are a way to load data into your database for testing purposes. You can create a fixture by defining a JSON, XML, or YAML file that contains the data you want to load.

Can you show me an example of a fixture file?

Sure! Here's a simple example of a JSON fixture file for a model called 'Book':

[
  {
    "model": "app_name.book",
    "pk": 1,
    "fields": {
      "title": "Django for Beginners",
      "author": "William S. Vincent"
    }
  }
]

How do I load this fixture into my tests?

You can load the fixture in your test case using the fixtures attribute. For example:

from django.test import TestCase

class BookTestCase(TestCase):
    fixtures = ['books.json']

    def test_book_count(self):
        self.assertEqual(Book.objects.count(), 1)

What if I want to create multiple fixtures?

You can create multiple fixture files and list them in the fixtures attribute as a list. For example:

fixtures = ['books.json', 'authors.json']