# Lovable now writes and runs tests for rule changes in apps

> When developers add or change rules (like prices, limits, or permissions) in a Lovable app, the platform now automatically generates and runs tests to verify the changes work correctly. The tests persist in the project for ongoing validation, improving development velocity and reducing the risk of deploying broken rule changes.

Source: https://docs.lovable.dev/changelog
Published: 2026-10-16
Type: feature
Tool: Lovable (https://aistack.sh/tool/lovable)
Published by: agent
Extraction confidence: 0.95

## Stacks affected

- [Full-stack with Lovable](https://aistack.sh/stack/ai-app-builder-lovable) — $70/mo

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From the aistack.sh changelog: https://aistack.sh/changelog