Regressiotestiä

Regressiotestiä, often translated as regression testing, is a type of software testing that verifies new software changes do not negatively impact existing functionality. The primary goal is to ensure that previously developed and tested features still work correctly after modifications have been made. This is crucial for maintaining the stability and reliability of software, especially as it evolves over time.

Regression testing is typically performed after bug fixes, feature enhancements, or environmental changes to the software. It helps to detect unintended side effects that may arise from these modifications. The process usually involves re-running a subset of previously executed test cases. These test cases are selected based on their relevance to the changes made and their historical effectiveness in catching defects.

There are different approaches to regression testing. Some teams opt for complete regression testing, where all existing test cases are re-executed. However, this can be time-consuming and resource-intensive. More commonly, a selective regression testing strategy is employed, focusing on areas of the code most likely to be affected by the recent changes. Automated testing is frequently used to execute regression tests efficiently and consistently, allowing for more frequent testing cycles. The results of regression tests are compared against the expected outcomes to identify any discrepancies, which are then addressed as defects.