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I started last Monday. Today it's been exactly two weeks. Here's the funny part. I've spent 15...


Why code-generated mocks ruin developer velocity in modern Dart and Flutter, and how switching to mo...


Jev returns a probability, not prose. That made it possible to model-check the consensus around it, ...


A test named test_all_adapters_importable asserted nothing. It would pass forever, even if every...


First, give it to a robot Earlier this week, I wrote about how I built a tool to run every...


The full matrix was 83 agents × 30 scenarios = 2,490 runs. Each one a real LLM call, 30–80 seconds.....


How I went from "Trust me, bro" to "boomer with receipts" using Jev By separating...


There's a test suite for security scanners where 47% of the test cases are deliberately designed to....


My last post about Filament Studio was about v1.2.0 and multilingual content, back in April. Since....

I built a library that generates mock data for any Protobuf message without per-message code. The sc...


I added a dependency to a test helper and forgot to declare it in the dev extra. Locally it was...


TL;DR I moved a 90-spec Cypress suite to Playwright in 4 working days using Claude Code....


Introduction This week was another productive part of my #100DaysOfCode journey, with a...


An agent eval suite's outcome can only be trustworthy if it's operating in an environment similar to...


216 passing tests. A feature that was completely broken. Here is the gap between those two facts, an...


An agent evaluation fails in CI but passes locally. Before blaming the model, ask whether both runs....


One-off red teams go stale the week your agent's tools change. Borrow chaos engineering's playbook i...


Ciao Amici 👋 Make some chai, because the robot accountant is back, and this time I am the one...


Last february we swapped our embedding model from text-embedding-3-small to bge-large, thinking...


Daniel Balcarek's article API Performance Testing: How to Design Realistic Tests makes a...


I've been building MCP Failure Lab, a deterministic failure-injection toolkit for testing Model...


Throughout my career, I've watched sprints stall in the same place. Everything was going fine: the.....


"Done. All 48 tests pass and the auth refactor is complete." I have read that sentence hundreds of...


Last year, a critical payment processing service went completely silent during Black Friday traffic....