järjestelmätestausten

Järjestelmätestaus, or system testing in English, is a phase in software testing that evaluates the complete and integrated software system. It is performed after integration testing and before acceptance testing. The primary goal of system testing is to verify that the system meets its specified requirements and functions as expected in its intended environment.

During system testing, the entire system is tested as a whole. This includes testing all integrated components and ensuring they work together harmoniously. Testers focus on end-to-end scenarios, simulating real-world usage to identify defects that might arise from the interaction of various modules or from external dependencies. This phase helps uncover bugs related to functionality, performance, security, and usability that were not caught in earlier testing stages.

The test environment for system testing is typically a replica of the production environment to ensure that the results are representative of how the system will perform in the actual deployment. Various types of system testing can be conducted, including functional testing, performance testing, load testing, stress testing, and security testing, depending on the project's requirements and risks. The outcome of system testing is a stable and robust system ready for user acceptance testing.