The Playwright Playbook — Part 3: Multi-User, Multi-Tab & Browser Context Testing
The Playwright Playbook — Part 3: Multi-User, Multi-Tab & Browser Context Testing "Most frameworks test one user at a time. Real apps don't work t…
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AI Made Development Faster. Testing Needs to Stop Living in Spreadsheets.
AI agents are making software development faster. That is great. But there is a problem I do not think we are talking about enough: testing is not spe…
How to E2E Test SendPigeon Email Workflows in Playwright
When you integrate SendPigeon into your app, you get three stages of email testing. Each stage solves a different problem. This guide walks through al…
I Built a Local Apex Runtime - Nimbus
Every Salesforce developer knows the wait. You change three lines of Apex, run your tests, and then go make coffee, because deploying to a scratch org…
Your feature flag defaults are backwards in tests
Most test suites get feature flag isolation backwards. The instinct is to opt in to a feature when a test needs it. The correct default is to force th…
I couldn't test my VM sizing math without spinning up a real VM
WhonixAutoSetup is a PowerShell project i keep poking at while studying for Security+. it stands up Whonix on Windows: one VM runs Tor (the gateway), …
The Playwright Playbook — Part 2: Network Interception — The Complete Guide
The Playwright Playbook — Part 2: Network Interception — The Complete Guide "Your tests should own the network — not be at its mercy." In Part 1, we f…
Agentic QA Pipelines in 2026: Why Test Scripts Are Already Dead (And What Replaces Them)
Agentic QA Pipelines: Why Your Test Scripts Are Already Obsolete You wrote the test. You maintained the test. The app changed. You rewrote the test. I…
Automation Before Automation (ABA) — A Missing Phase in Modern Testing?
Software testing is usually described in two large categories: exploratory testing and automated testing. Exploratory testing is about investigation a…
Your Spec Files Are Lying to You. Mine Were Too.
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…
How to Use DisposableEmail Safely (WithoutLocking Yourself Out)
Disposable email feels like a cheat code. Hand the form an address that exists for an hour, get whatever you came for, walk away. No spam. No mailing …
OTP Verification in Playwright Without Regex
Every developer who has written a Playwright test for OTP verification has written this line: const otp = email . body . match ( / \b\d{6}\b / )?.[ 0 …
You can't benchmark an AI notetaker against a real meeting — you don't know the right answer. So I generated the meeting.
I wanted to know which AI notetaker transcribes most accurately — Granola, Fathom, or Otter. So I did the obvious thing: I recorded a real meeting, ra…
I Shipped One Messy Python Script. Here's the 10-Point Checklist That Got It There.
AI writes you a working Python script in about ninety seconds. It runs. You move on. But the script has a long afterlife. It picks up a hardcoded Down…
Why Your GitHub Actions Workflow Didn't Trigger: branches, tags & paths Filters Explained
You pushed a commit, opened the Actions tab, and there's nothing there. No red X, no yellow dot — the workflow simply didn't run. There's no error to …
Every elevator has a load plate. Tests are supposed to kill fear, not feed it.
Every elevator has a small metal plate near the doors: 8 persons — 630 kg . It doesn't mean the car snaps at the ninth person. It means an engineer lo…
How to Test AI Agents Before Production
Most AI agents are not failing because the model is useless. They fail because nobody defined what “working” means. A chatbot can answer a question an…
How a Five Line Architecture Test Caught a Data Leak a Code Review Missed
TL;DR: Pest PHP can test the structure of your code, not just its behavior. Write your team rules as architecture tests and CI enforces them on every …
[Hands-on] Guide to Locally Testing Athenz Before Opening a PR
Goal This post provides a guide on how to run unit tests locally before submitting a Pull Request (PR) to the Athenz repository. Prerequisite: You mus…
Wiring the Guardrails
A Level 5 Engineer — Issue #6 Preface I want to be upfront about something before we get into it. None of the frameworks in this article is mine. The …
Table-test или как помочь агенту понять как тестироваться
Агенты сейчас пишут тесты уже за многими из нас, будем объективны, все больше людей кидаем таску ему - получают пачку аппрувов и погнали все это мержи…
When you just need to inspect a webhook before writing code
Webhooks are usually discussed as something your application should process automatically. A payment provider sends an event. A Git hosting service no…
Running 100 Playwright Tests in Parallel Without Inbox Collisions
If you've ever tried to run a large Playwright test suite in parallel — the kind that tests email verification flows, magic links, or password resets …
Why your synthetic fintech data fails code review (and how mixture models fix it)
Every fintech developer has done this: you need test data, you reach for Faker, you generate ten thousand transactions, and your demo works. Then a da…
Web Testing in 2026 Is Less About Tools and More About Trust
Web testing has become a lot harder to describe in one sentence. It used to be easier to say, “We run some Selenium tests,” or “We use Cypress for fro…
What Actually Breaks Test Automation After the Demo
Most test automation demos are too clean. The demo app is stable. The login flow is simple. The selectors are obvious. The data is predictable. CI is …
Never Fix a Bug Without Proof: The @test-engineer Prove-It Pattern
Let me describe a scene you've lived. A bug report lands. "The completed tasks are still showing up in the active list." You look at the code, spot so…
Webhook Testing: The Complete Guide for 2026
Webhooks are how modern systems talk to each other asynchronously. Stripe sends them. GitHub sends them. Shopify, Slack, Twilio, Postmark, SendGrid, M…
2- AWS Serverless: Testing (typescript)
Shifting from traditional application testing to serverless TypeScript engineering is all about shifting your perspective: you stop testing a running …
We audited 49 Show HN launches. 38 had a critical bug on day one.
Originally published on the Prufa blog . In June 2026 we pointed Prufa's free audit at 50 products that had just launched on Show HN — every launch fr…