Testkit / product

A durable record of product behaviour.

Make observed failures, their evidence, and their relationship to implementation history part of engineering memory.

Behaviour is the unit of confidence.

Testkit records what a user was trying to do, the reality the product started with, the disruption introduced, and the outcome that followed.

That joins test execution to product history. Engineers can tell whether a failure is new, known, fixed, or back again.