testattavuuden
Testattavuus, or testability, is the degree to which a software system or component supports effective testing. It describes how easily testers can design and execute tests to determine whether the system meets its requirements, and how well the system exposes information needed to verify behavior. High testattavuus enables faster feedback, better fault isolation, and more reliable quality decisions during development and maintenance.
Key factors influencing testattavuus include observability and controllability—the ability to observe internal state and to provide
Practices to improve testattavuus include designing for testability, modular architectures, dependency injection, explicit interfaces, and instrumentation.
Measuring testattavuus combines qualitative assessment and metrics such as time to set up tests, test coverage