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Writing on Testing

Articles on Testing from Tauseef Fayyaz: practical writing on engineering, AI and tech careers, drawn from leading a team and mentoring engineers.

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5 posts tagged “testing”

career growthsystem design

The Defaults I Would Learn First as a Software Engineer

Every roadmap for learning software engineering is the same technology list in a different order, and it tells you nothing about what to do when you are sitting in front of an unclear requirement on a Wednesday afternoon. Fourteen situations you will keep meeting, paired with the move that is usually right, from prototyping a vague requirement to blaming the system rather than the person.

Jul 29, 20260

testingdevops

Five Kinds of API Test and When Each One Earns Its Place

Two engineers can both say the API is tested, both be telling the truth, and still disagree about whether it is ready. Functional, integration, regression, load and security testing, what each one catches, what each one structurally misses, how to spread your effort between them, and the one minute authorisation check that finds the most common serious API vulnerability.

Jul 7, 20260

code reviewtesting

Six Rules That Keep a Codebase Worth Working In

Every one of these gets quoted as an acronym in code review, usually by somebody who read the expansion and not the reasoning, and applied without judgement they produce worse code than if nobody had heard of them. Separation of concerns, DRY, KISS, YAGNI, test driven design and writing for the next reader, each with the thing it protects against and the way it goes wrong.

Jul 2, 20260

devopstesting

What Actually Happens Between Your Pull Request and Production

Most engineers learn CI/CD as a sequence of buttons rather than a system, which works right up until the pipeline goes red and nobody knows which stage failed or why it matters. The five stages walked through one at a time, what each is protecting you from, why builds pin their versions, the difference between rolling, blue green and canary releases, and the ten second skill of reading a failed stage.

Jun 25, 20260

career growthsystem design

The Fundamentals Worth Learning as a Software Engineer

Frameworks are the fastest moving and least valuable part of what you know. This is the layer underneath: how a computer runs your code, data structures as trade offs, complexity at conversational depth, storage, networks, concurrency, version control, testing as a design tool, and the two skills engineers skip that decide how far they get.

Jun 15, 20261

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