django-tdd

Django TDD Skill

Test-driven development workflow for Django applications. Covers pytest fixtures, Django TestCase, factory_boy, and testing patterns.

When to Activate

Activate when:

• Writing new Django features using TDD workflow
• Adding tests to existing Django applications
• Debugging test failures in Django projects
• Setting up testing infrastructure for Django apps

TDD Workflow

1. Write a failing test (RED)
2. Run the test - it should fail
3. Write minimal implementation (GREEN)
4. Run tests - they should pass
5. Refactor (IMPROVE)
6. Verify coverage

Test Setup

Using pytest with Django

# conftest.py
import pytest
import django
from django.conf import settings

@pytest.fixture(scope="session")
def django_db_setup():
    settings.DATABASES["default"] = {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": ":memory:",
    }

@pytest.fixture
def api_client():
    from rest_framework.test import APIClient
    return APIClient()

Django TestCase

from django.test import TestCase, Client
from django.urls import reverse
from django.contrib.auth import get_user_model
from .models import Article, Author

User = get_user_model()

class ArticleViewTest(TestCase):
    def setUp(self):
        self.client = Client()
        self.user = User.objects.create_user(
            email='[email protected]',
            password='testpass123'
        )
        self.author = Author.objects.create(name='Author', email='[email protected]')
        self.article = Article.objects.create(
            title='Test',
            content='Content',
            author=self.author,
            status='published'
        )

Testing Views

List View Tests

def test_article_list_view(self):
    response = self.client.get(reverse('article-list'))
    self.assertEqual(response.status_code, 200)
    self.assertContains(response, 'Test')
    self.assertTemplateUsed(response, 'articles/list.html')
    self.assertEqual(len(response.context['articles']), 1)