Three AI Reviews Passed. One Real Legal Case Broke the System.
I had a system that looked ready. One AI model designed the architecture. Another implemented it. Additional models reviewed the output, checked the l…
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YAML Test Cases in Git: What r/QualityAssurance Actually Said
I asked r/QualityAssurance a blunt question: is managing manual test cases as YAML files inside Git a good idea? The thread got lively. People were no…
The Shape of Failure: Before You Blame the AI
Every automated system receives a particular shape of the world. That shape is expressed through records, documents, events, exceptions, and missing v…
AI Is Moving From Finding Bugs to Fixing Them
For twenty years we built better smoke detectors. Now we are finally building firefighters. We have gotten incredibly good at finding problems. Your I…
Python Selenium Architecture and the Importance of Python Virtual Environments
Modern software development demands applications that are reliable, efficient, and capable of delivering an excellent user experience. As organization…
Understanding Python Selenium Architecture and the Importance of Python Virtual Environments
Modern software development demands applications that are reliable, efficient, and capable of delivering an excellent user experience. As organization…
OpenEval: Why LLM Evaluation Needs a Standard Format
Every LLM evaluation framework today invents its own test case format, its own grader definitions, and its own results schema. DeepEval, Promptfoo, In…
Solution to Challenge 2 - Data Grid Validation and CRUD Operations
Challenge #2 is done — here's my solution to Challenge 2 - Data Grid Validation and CRUD Operations First, the gaps in the user story 1) The delete op…
Selenium with Python: The Ultimate Guide to Web Automation Testing
Introduction : In today's fast-paced software development world, delivering high-quality applications quickly is a top priority. Manual testing is eff…
My eval said a perfect MCP server was broken. It was the eval that was lying.
Originally published at tengli.dev When I added an LLM-powered eval to mcpgrade , the first real run produced a result that looked like a scoop: conte…
I stopped writing rules for coding agents that CI could not enforce
I used to treat repository instructions as the finished product. Write a careful AGENTS.md . Explain the architecture. Ban any . Require named exports…
Did it check, or did it guess? Testing a tool whose output is written by an LLM
My first AI tool was ready, and in typical AI-era fashion, I rushed to publish it. After all, it worked. Or at least when I ran it, the output looked …
We Tried to Beat Cloudflare With Proxies and TLS Tricks. Here's What Actually Failed.
Most advice about scraping Cloudflare-fronted sites is asserted, not measured. "Use residential IPs." "Match Chrome's JA3." People repeat these like f…
The Next Internet User Is Not Human
Most AI demos still happen in isolation. One user writes one prompt. One model returns one answer. Everyone judges the output as if that is the final …
Build an Evidence Supply Chain for Tests
Most teams think of automated tests as decision machines. Green means ship. Red means stop. That model works right up until the first ambiguous failur…
How to Start Bug Bounty Hunting in 2026: The Complete Beginner's Guide
Everything you need to know to find your first vulnerability, get paid, and build a real reputation in cybersecurity — without breaking any laws. If y…
The Skill Audit
Preface I want to be upfront about something before we get into it. None of the frameworks in this article is mine. The ideas here come from two peopl…
The Confidence Tier Model: How to Decide When Your Data Isn't Enough
The Confidence Tier Model: How to Decide When Your Data Isn't Enough Meta description: Most testing programs are built for traffic they don't have. Th…
How Much of Your CI Pipeline Is Just Cucumber Scenarios You're Too Afraid to Delete
The CI job just hit 28 minutes. Again. You pull up the duration report expecting to blame a bloated integration test or a slow environment spin‑up. In…
3 Portfolio Mistakes Hiring Managers Spot Instantly
The manager opens your portfolio. Your resume says you have five years of automation experience. The README lists Selenium, Playwright, Appium, Jenkin…
The Manual Tester Who Can Write a SQL Join Will Always Beat the SDET Who Can't
Most people think the SDET title means you are automatically more valuable than a manual tester. The SDET writes Playwright scripts. The SDET configur…
Go 1.25 testing/synctest: No More Flaky Concurrent Tests
Three green tests locally, two red on CI. The outcome depends on how busy the build server is that day. This isn't a logic bug — it's a time.Sleep tha…
A Browser Click Is Not Proof: Verifying That Web Apps Actually Work
A web app can look finished while its most important actions do nothing durable. A Save button may show a spinner and a success toast. A new row may a…
Stress-testing my Multi-LLM engine: 93 chunks, 8 models, and one "Insufficient Balance" error.
Last week, I decided to push my consensus engine, NexaVerify , to its absolute limits. I wanted to see if my architecture could handle a massive paral…
Test Result Reporting and Failing Fast in CI Pipelines
A test failure that takes 20 minutes to surface, buries the error in 3000 lines of log output, and gives no context about what changed is nearly usele…
Stop letting your coding agent claim "pixel-perfect". Make it prove 97.49%.
Your coding agent edits a component, runs the build, and reports the UI is now "pixel-perfect." It never opened a browser. It's guessing. I got tired …
Your OpenAPI spec is already a test plan — here's how to turn it into Playwright tests automatically
If you're writing Playwright API tests manually from an OpenAPI/Swagger spec, you're doing work that should be automated. Every endpoint in your spec …
AI Can Write the Test. Your Team Owns the Maintenance
AI has made the first hour of test automation dramatically cheaper. Describe a workflow, paste a requirement, or point an agent at an application, and…
Pytest - Production test Coverage
Production-Ready Pytest You've written solid tests — fixtures keep setup DRY, parametrization makes edge cases explicit, and temporary directories pre…
How an AI Agent Taught Me What "Passing Tests" Actually Means
When AI agents started showing up everywhere, I thought I'd finally found something that could make my job easier overnight. I was working in QA, stil…