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What a device tool costs your coding agent: a React Native benchmark

What a device tool costs your coding agent: a React Native benchmark

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5 min read
Web App Performance Benchmarks: Share the Conditions Behind the Speedup

Web App Performance Benchmarks: Share the Conditions Behind the Speedup

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6 min read
I built GenerateRealData, a test data generator where keys, totals and rules hold across tables

I built GenerateRealData, a test data generator where keys, totals and rules hold across tables

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4 min read
Exchange Rate API Unit Testing: Mocks, Fixtures and Contract Tests

Exchange Rate API Unit Testing: Mocks, Fixtures and Contract Tests

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7 min read
My wire-size calculator had the right tables and still gave the wrong answer

My wire-size calculator had the right tables and still gave the wrong answer

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4 min read
Testing Pagination Boundaries: Catching Off-by-One Errors

Testing Pagination Boundaries: Catching Off-by-One Errors

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3 min read
Correct the Record, Cancel the Old Action: A 16-Case Voice AI State Test

Correct the Record, Cancel the Old Action: A 16-Case Voice AI State Test

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18 min read
Same Template, Different Request: Fingerprint What You Actually Send to the Model

Same Template, Different Request: Fingerprint What You Actually Send to the Model

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4 min read
CI/CD for a Solo Project: From the First Test to Release

CI/CD for a Solo Project: From the First Test to Release

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27 min read
Verify the selected invoice set before starting a native batch download

Verify the selected invoice set before starting a native batch download

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4 min read
How to prove an AI-converted COBOL program still behaves the same

How to prove an AI-converted COBOL program still behaves the same

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5 min read
Three ways a health AI can fail you, and the tests I wrote for each

Three ways a health AI can fail you, and the tests I wrote for each

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5 min read
Running VS Code end-to-end tests on a Windows desktop nobody can see

Running VS Code end-to-end tests on a Windows desktop nobody can see

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6 min read
De cero a producciĂłn: pruebas automatizadas de una API REST con Newman, GitHub Actions y Render

De cero a producciĂłn: pruebas automatizadas de una API REST con Newman, GitHub Actions y Render

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12 min read
Five checks before you swap to a cheaper LLM (with the code for each)

Five checks before you swap to a cheaper LLM (with the code for each)

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3 min read
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