Toiminnallisuustestien

Toiminnallisuustestien, or functional testing, is a software testing method that verifies the software against functional requirements and specifications. It checks if the application behaves as expected by providing specific inputs and comparing the actual outputs with the expected outputs. The primary goal of functional testing is to ensure that the software performs all its specified functions correctly. This type of testing is typically performed from the user's point of view, focusing on what the system does rather than how it does it.

The process of functional testing involves several steps. First, the test objectives are defined based on the functional specifications. Then, test cases are designed to cover all functional requirements. These test cases are executed, and the results are compared against the expected outcomes. Any discrepancies found are reported as defects. Functional testing can be performed manually or using automated tools. Manual testing allows testers to explore the application more freely, while automation is beneficial for repetitive tasks and regression testing, ensuring that new changes haven't broken existing functionality.

Common types of functional testing include unit testing, integration testing, system testing, and acceptance testing. Unit testing focuses on individual components or modules, integration testing verifies the interaction between different modules, system testing evaluates the complete and integrated system, and acceptance testing is performed by end-users or stakeholders to ensure the system meets their needs. Effective functional testing is crucial for delivering high-quality software that satisfies user expectations and business requirements.