Repeytyystestejä

Repeytyystestejä, or retesting, is a crucial part of software development and quality assurance. It involves executing previously conducted tests to ensure that new code changes, bug fixes, or updates have not introduced new defects or negatively impacted existing functionality. The primary goal of retesting is to verify that resolved issues remain fixed and that the software's overall stability and performance are maintained.

This process is typically performed after a period of development or bug fixing. Testers will re-run test cases that previously failed or were associated with the areas that have undergone changes. If a bug was fixed, the test case that originally identified the bug is re-executed to confirm the fix. Additionally, related test cases might be run to check for any unintended side effects, often referred to as regression.

Effective retesting strategies are essential for delivering reliable software. It helps prevent the introduction of regressions, which are new bugs that appear in previously working parts of the application. Automated testing plays a significant role in retesting, as it allows for the rapid execution of a large number of test cases, saving time and resources. Manual retesting is also employed, particularly for more complex scenarios or when exploratory testing is needed to uncover subtle issues. The decision on which retesting approach to use often depends on the project's scope, the nature of the changes, and the available resources. Ultimately, retesting contributes to higher software quality and a better user experience.