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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Handling Shadow DOMs in Agentic Scraping Workflows
TL;DR Web components encapsulate UI and data inside Shadow DOMs, hiding it from standard parsers like BeautifulSoup and document.querySelector . To ex…
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…
How to Automate Publishing to CSDN and WeChat MP Using Playwright (When APIs Fail)
Overview Today's focus was on automating article publishing to CSDN and WeChat MP (微信公众号) using Playwright, after CSDN deprecated its public Open API.…
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 …
How We Optimized a Django Playwright Scraper to Save 60% on Rotating Proxy Bandwidth
As indie hackers and backend developers, we love using modern browser automation frameworks like Playwright to handle heavy, JavaScript-rendered dynam…
Capstone: A 100-Test Suite, End to End (Playwright + TypeScript, Ch.26)
This is where everything comes together. Over the course we built a layered Playwright TypeScript framework — fixtures, Page Objects, API + UI + integ…
Advanced: Network Mocking, Visual & Accessibility (Playwright + TypeScript, Ch.22)
Welcome to Part 6 . The framework is solid; now we add three powerful kinds of test that go beyond "click and assert text." Code for this chapter is t…
APIRequestContext Fundamentals (Playwright + TypeScript, Ch.11)
Welcome to Part 3 — API Testing . Until now the API was our setup helper. Now we test it as a first-class surface. API tests need no browser, so they …
Why a Test Automation Framework? (Playwright + TypeScript, Ch.1)
Welcome to the first chapter of a hands-on course where we build a production-grade Playwright + TypeScript automation framework — covering both API a…
I Built an ML Bitcoin Trading Bot — Then Proved It Had No Edge.
A case study in building crypto trading infrastructure and, more importantly, testing it honestly — including when the honest answer is "no edge." Wha…
I Built a One-Person AI QA Agency Using a Skill File and Local LLM
There is a specific failure mode in AI-assisted QA work that most tooling discussions skip entirely, and it shows up earliest when you are working sol…
I Cut My AI Test Automation Cost by 300x by Ditching Vision Models
I Cut My AI Test Automation Cost by 300x by Ditching Vision Models From $0.011 per step to $0.00004 — here's how I learned vision models are overkill …
Six Principles in Practice: How an Agentic E2E Found 11 Production Bugs in 8 Runs
Eight runs, eleven bugs I ran my E2E testing system on a production ecommerce platform eight times in a row – across five different business modules, …
Playwright is Powerful, But Managing It at Scale? That's Another Story
Playwright is Powerful, But Managing It at Scale? That's Another Story If you've worked with Playwright, you know it's an incredible tool for end-to-e…
How I Built a Screenshot API That Doesn't Suck
How I Built a Screenshot API That Developers Can Actually Trust After spending too many nights babysitting headless Chrome, I stopped trying to make a…
50% Compliance, Not 0%: How a Logging Spike Almost Triggered the Wrong Architecture Rewrite
TL;DR : I thought my prompt augmentation track was completely broken (compliance=0%) and almost spent 27 hours rewriting plan-and-execute. Turns out t…
Playwright MCP burns 1.5M tokens. CLI does it in 27k. So I built the skill that splits the phases.
I wanted to test my web app. That's it. A Next.js portfolio and a SaaS chat — run some accessibility checks, catch console errors, verify nothing's br…