Türker Yıldırım

testing

  • A test suite that runs on every commit, in ninety seconds

    Deep dive9 min read

    Four minutes forty is fine and ninety seconds changes behaviour. The threshold below which running the suite stops being a decision.

  • The read model that finally earned its place

    Deep dive10 min read

    A projection deleted in 2023 for being premature, rebuilt in 2025 because the query is now eleven seconds.

  • A consumer that had to be idempotent and finally was

    Note2 min read

    A handler documented as idempotent since 2022, which was not, and a redelivery that proved it. A docblock claiming idempotency is a claim and not a mechanism, and…

  • A test double that had drifted from the real thing

    Note2 min read

    An in-memory repository passing every test, and a real one that had gained a behaviour the fake did not have. A constraint added to the database is a…

  • A year of an assistant in the editor, measured

    Deep dive14 min read

    A year of using a model-backed assistant, and an attempt to say something specific about it. Every claim about this is a demonstration or a complaint.

  • Testing a migration forwards on a copy of production

    Note2 min read

    A migration tested against an empty schema, run against nine hundred million rows, and taking four hours instead of four seconds. The restore drill already produced a full…

  • Managing WordPress entirely through Composer

    Deep dive15 min read

    turkerdev/wp-composer, and an install where nothing is committed except a lock file. Core, themes and plugins as dependencies.

  • A build with no bundler

    Deep dive9 min read

    A site with 18 KB of JavaScript and a build pipeline sized for something larger. What a bundler provides, listed, and which of it is needed.

  • An assertion on a query count that finally broke

    Note2 min read

    A test asserting fewer than ten queries, written in 2023, failing in July because a legitimate feature added an eleventh. A bound that fails on a legitimate change…

  • A compatibility suite retired after a year

    Note2 min read

    A monthly job comparing two servers, kept for thirteen months to preserve an option, and switched off once the option stopped mattering. The tests were the valuable artefact…