Järjestelmätesteille

Järjestelmätesteille, often translated as system testing in English, refers to the testing of a complete and integrated software system. This phase of testing is crucial for verifying that the system as a whole meets its specified requirements and functions as expected before deployment. Unlike unit testing which focuses on individual components, or integration testing which checks the interaction between modules, system testing evaluates the end-to-end behavior of the entire application.

The primary goal of system testing is to identify defects that may arise from the interaction of various components or subsystems within the larger system. It aims to validate the system's compliance with functional and non-functional requirements. Functional requirements define what the system should do, while non-functional requirements cover aspects like performance, security, usability, and reliability. System testing is typically performed in an environment that closely mirrors the production environment to ensure accurate results.

Various types of system tests can be conducted, including functional testing to ensure all features work correctly, performance testing to assess speed and responsiveness under load, security testing to identify vulnerabilities, and usability testing to evaluate the user experience. Regression testing is also a common practice during system testing to ensure that new changes or bug fixes have not negatively impacted existing functionality. Successful completion of system testing provides confidence that the software system is ready for user acceptance testing or deployment.