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Testing & Quality
Unit/integration tests, fuzzing, reliability, and observability for apps.
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Ephemeral Generators Need a Review Boundary
26+ min ago (751+ words) A free model and a free server change your budget, not your threat model. The interesting engineering problem is the boundary around the generator. I review that boundary before any generated diff reaches a repository. This is an architecture review,…...
Case Study: Freeze the Error Taxonomy Before an Agent Writes the Error Mapper
27+ min ago (462+ words) The problem is not that the agent is careless. The problem is that you handed it a task with no acceptance criteria, so it optimized for readability instead of contract stability. The freeze here is narrow and deliberate. You commit…...
A six-line edit made fifteen units stale. The freshness check was working correctly.
2+ hour, 44+ min ago (530+ words) Every unit of this project carries a record of its last verification, and each record pins the configuration it was checked against by hashing it. If the configuration changes, the pin no longer reproduces and the record goes stale, which…...
Our SSRF guard passed every test we ran — until a stranger's comment pointed out the test we never ran
2+ hour, 48+ min ago (300+ words) Then I didn't follow up. The comment sat there for weeks. Going back to it tonight, the gap was worse than I'd worried. Five of our endpoints (redirect-trace, security-scan, security-headers, favicon, scrape) fetch a user-supplied URL. All five guarded against…...
I published a benchmark that was entirely my own bug
3+ hour, 24+ min ago (898+ words) I built a small thing and then spent considerably longer trying to find out whether it worked. The trying-to-find-out is the part worth writing about, because for seven runs my measurement was broken in a way that produced confident, specific,…...
Swapping every model in a RAG
3+ hour, 6+ min ago (44+ words) In the comparison articles (part 1 and part 2) I put my own RAG against five other systems. The... Tagged with ai, rag, llm, python....
The OOM killer stopped my acceptance check four times in two days. It was rebuilding the project to read a number.
3+ hour, 18+ min ago (606+ words) There is a step at the end of each work session that decides whether each unit of the project is accepted. It gathers, for every unit, whether its test suite passed, whether its checks are current, whether its documentation was…...
From Automation Frameworks to Agentic QA: What Changes When AI Can Take Action?
3+ hour, 41+ min ago (693+ words) A Staff SDET's field guide to the architectural shift — for juniors who want to actually understand... Tagged with playwright, ai, testing, qa....
Top 5 AI Code Review Tools 2026 | HackerNoon
1+ day, 5+ hour ago (732+ words) AI reviewing AI? What could possibly go wrong? Well, for starters, the biggest issue here is bias. If a model has written the code, it probably shouldn’t be the one doing the review. Then there’s the fact that these code…...
An HTTP 200 is not a delivered job application
14+ hour, 35+ min ago (336+ words) Every auto-apply tool I have taken apart marks an application "sent" at the same moment: the instant it dispatches the click. That is a read-back of our own input, and it is the weakest signal in the whole pipeline. I…...