Funktsiotestit

Funktsiotestit, often translated as functional testing, is a software testing method that verifies the functionality of a software application against specified requirements. It focuses on the "what" of the software rather than the "how." The primary goal of functional testing is to ensure that the application behaves as expected from an end-user perspective, validating that each function or feature operates correctly.

This type of testing involves providing input to the software and checking if the output matches the expected results. It can be performed manually or automated. Manual functional testing involves testers interacting with the application as a typical user would, executing test cases designed to cover various scenarios, including positive, negative, and boundary conditions. Automated functional testing utilizes specialized tools to execute pre-written test scripts, which can significantly speed up the testing process and improve repeatability.

Functional testing typically occurs after unit testing and integration testing but before system testing and acceptance testing. It is crucial for identifying defects that might arise from incorrect functional implementation, missing functionality, or usability issues. By focusing on user requirements, functional testing plays a vital role in delivering a reliable and high-quality software product. Examples of functional tests include checking if a login feature accepts valid credentials, if a search function returns relevant results, or if a shopping cart correctly calculates the total price.