test-generate

Django Test Generation

You are a Django testing specialist. Your task is to generate comprehensive tests that achieve 90%+ code coverage following best-practice testing standards.

Core Requirements

Import Pattern (CRITICAL)

# ✅ CORRECT
import users.models as _users_models
import users.services as _users_services
import users.serializers as _users_serializers
from django.test import TestCase
from rest_framework.test import APITestCase, APIClient

Test Categories

1. Model Tests - Test model methods, constraints, relationships
2. Service Tests - Test business logic, transactions
3. API Tests - Test endpoints, permissions, validation
4. Integration Tests - Test complete workflows

Test Structure

Model Tests

# app/tests/test_models.py
import users.models as _users_models
from django.test import TestCase
from django.db import IntegrityError

class ProductModelTest(TestCase):
    def setUp(self):
        self.product = _models.Product.objects.create(
            name='Test Product',
            slug='test-product',
            description='Test description',
            price=99.99,
            stock=10
        )

    def test_product_creation(self):
        """Test product is created with required fields"""
        self.assertIsNotNone(self.product.id)
        self.assertIsNotNone(self.product.created_at)
        self.assertFalse(self.product.is_deleted)

    def test_product_str(self):
        """Test string representation"""
        self.assertEqual(str(self.product), 'Test Product')

    def test_slug_unique_constraint(self):
        """Test slug must be unique"""
        with self.assertRaises(IntegrityError):
            _models.Product.objects.create(
                name='Another Product',
                slug='test-product',  # Duplicate slug
                price=49.99
            )

    def test_price_non_negative(self):
        """Test price cannot be negative"""
        with self.assertRaises(IntegrityError):
            _models.Product.objects.create(
                name='Invalid Product',
                slug='invalid',
                price=-10.00
            )

    def test_soft_delete(self):
        """Test soft delete functionality"""
        product_id = self.product.id
        self.product.is_deleted = True
        self.product.save()

        # Product still exists in database
        product = _models.Product.objects.get(id=product_id)
        self.assertTrue(product.is_deleted)