Testing Django Apps Built with AI

AI-generated Django code often produces ORM queries that work correctly for small datasets but fail or perform terribly at scale. N+1 query problems, incorrect filter chaining, and missing select_related or prefetch_related calls are extremely common. While these are primarily performance issues, they can also cause timeouts and errors for users.

Model definitions generated by AI frequently have incorrect field types, missing validators, or overly permissive null and blank settings. These issues lead to data integrity problems that only surface when users submit unexpected input or when data migrations run in production.

Testers stress-test your Django app by creating, reading, updating, and deleting data through the user interface. They notice when operations take too long, when data appears incorrect after saving, and when validation messages are missing or misleading.

Django templates generated by AI often contain broken template tags, incorrect context variable access, and missing template inheritance blocks. These bugs can cause pages to render with missing content, broken layouts, or raw template syntax visible to users.

Class-based views are a frequent source of confusion for AI tools. Incorrect method overrides, missing permission mixins, and wrong URL configuration lead to views that return 405 errors, allow unauthorized access, or fail to process form data correctly.

Testers navigate every page and submit every form, catching template rendering issues, broken links, and view logic errors. They verify that Django messages display correctly, that pagination works, and that file uploads and downloads complete successfully.

AI tools frequently misconfigure Django's authentication system. Login views may not redirect correctly after authentication, password reset flows may send emails that never arrive, and session settings may cause premature logouts. Testers verify the complete authentication lifecycle.

If your app includes Django admin customizations, testers check that admin actions work correctly, that list filters and search function as expected, and that custom admin views display data properly. AI-generated admin configurations often register models without proper list_display, search_fields, or filter settings.