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Find those bugs before your users do! 🐛

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Playwright's fill() threw an error and still inserted the text: the CodeMirror 6 double-paste trap

Playwright's fill() threw an error and still inserted the text: the CodeMirror 6 double-paste trap

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3 min read
I Built a 40-Minute Evaluation for Free Model Endpoints. Here's the Scorecard.

I Built a 40-Minute Evaluation for Free Model Endpoints. Here's the Scorecard.

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4 min read
Design Patterns para Automação de Testes: Guia Pråtico com Playwright e Cypress

Design Patterns para Automação de Testes: Guia Pråtico com Playwright e Cypress

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2 min read
Who Verifies the Verifier?

Who Verifies the Verifier?

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8 min read
Every figure was right. The receipt was still wrong.

Every figure was right. The receipt was still wrong.

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6 min read
The Negative Test That Passed for the Wrong Reason

The Negative Test That Passed for the Wrong Reason

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4 min read
I Wrote 238 Tests Against My Own Auth Package and Found 4 Real Bugs

I Wrote 238 Tests Against My Own Auth Package and Found 4 Real Bugs

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7 min read
A practical way to verify AI-generated code

A practical way to verify AI-generated code

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2 min read
Designing a Single-Submit Boundary for UI Automation

Designing a Single-Submit Boundary for UI Automation

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1 min read
Dev Log: 2026-08-18 — everything that had to survive being called twice

Dev Log: 2026-08-18 — everything that had to survive being called twice

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6 min read
Why Read-Only Discovery Should Come Before Browser Writes

Why Read-Only Discovery Should Come Before Browser Writes

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1 min read
Your models agreed with each other. They were agreeing with themselves.

Your models agreed with each other. They were agreeing with themselves.

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13 min read
Idempotent Browser Automation: How to Make Retries Safe

Idempotent Browser Automation: How to Make Retries Safe

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2 min read
The Model Did Not Change: The Test Was Comparing Strings, Not Behavior

The Model Did Not Change: The Test Was Comparing Strings, Not Behavior

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4 min read
How to benchmark scraping APIs for AI agent workloads

How to benchmark scraping APIs for AI agent workloads

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5 min read
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