---
title: Verifying Agentic Development at Scale
link: https://cognition.com/blog/testing-development
source: cognition
published: 2026-05-29T00:00:00Z
first_seen: 2026-09-02T14:07:29.769486161Z
summary: What we’ve learned building end-to-end testing capabilities in Devin’s virtual machine
---

What we’ve learned building end-to-end testing capabilities in Devin’s virtual machine