Software Testing

Test Data Faker Builder Field Guide: When Five Hand-Typed Fixture Rows Are A False Green

By xiezixing 2026年9月2日

Hand-written fixtures encode the author blind spots twice. A field-config generator produces the awkward rows nobody types: apostrophes, absent optionals, Luhn-valid cards, checksum IDs.

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Accessibility Checker Field Guide: When WCAG 2.1 Compliance Should Not Be a Friday Night Audit

By xiezixing 2026年8月23日

Run the Accessibility Checker before deploy, not after. WCAG 2.1 conformance is the kind of…

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HTTP Request Tester: a mini Postman that lives in your browser

By xiezixing 2026年8月15日

What an in-browser HTTP client actually solves The shortest path to a real HTTP response…

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API Breaking Changes Detector Field Guide: The OpenAPI Diff That Catches Them All

By xiezixing 2026年8月9日

Most breaking changes in an API are visible in the OpenAPI diff before they ever…

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Why Your Realistic Test Data Is Not Stressing Your Code

By xiezixing 2026年7月31日

Why Your "Realistic" Test Data Is Not Stressing Your Code Your parser was tested on…

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Your Regex Looks Right. It Probably Isn’t.

By xiezixing 2026年6月15日

You write ^[a-z]+@[a-z]+.[a-z]+$. You test one email address. It matches. You ship the validator. Six…

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The 30-Second Check That Catches API Changes Before They Break Production

By xiezixing 2026年6月6日

A junior engineer added a required field to a POST /v1/orders endpoint last Tuesday. The…