---
title: "Automated testing"
description: "2 posts about Automated testing, summarised, each linking to the original."
---

# Automated testing
> 2 posts about Automated testing, summarised, each linking to the original.

## Articles

### [How Meta Built Forum With AI-Native Engineering](https://yomu.fyi/post/how-meta-built-forum-with-ai-native-engineering.md)
- Company: [Meta](https://yomu.fyi/company/meta.md)
- Author: Shengbo Guo
- Published: Oct 15, 2026
- Type: Problem & solution

Meta built Forum using AI-native engineering, treating an AI agent as a development participant rather than a faster typing tool. The team shifted from human-in-the-loop to human-on-the-loop, where the agent autonomously plans, implements, builds, tests, and corrects its work while the engineer sets goals and approves outcomes. Success was measured by verified, production-ready results, not code volume, with automated verification signals like build status and unit tests filtering output before review. Meta adapted the codebase for legibility, gave agents tools to inspect live view hierarchy directly instead of descriptions, and created a separate sandbox build to isolate prototype code from production. This approach helped Forum reach core feature parity with Facebook Groups in eight weeks and caught a memory issue during development that roughly halved memory use and page faults.


### [Sapienz Receives ISSTA 2026 Impact Paper Award](https://yomu.fyi/post/sapienz-receives-issta-2026-impact-paper-award.md)
- Company: [Meta](https://yomu.fyi/company/meta.md)
- Published: Oct 15, 2026
- Type: Announcement

Sapienz, a multi-objective automated testing system for Android, received the ISSTA 2026 Most Influential Paper Award for its 2016 research by Ke Mao, Mark Harman, and Yue Jia. The system combines three goals: exploring more of an app, finding more crashes, and reducing the steps needed to trigger them, making failures easier to investigate. In an evaluation of 1,000 popular Google Play apps, Sapienz found 558 previously unknown crashes. Within 17 months of publication, it was deployed at Meta, where it now runs millions of tests daily, surfaces thousands of unique crashes each week, and helps safeguard hundreds of app releases each month. Sapienz also became the app-exploration engine for dynamic taint analysis at WhatsApp using synthetic conversation test accounts.