Regression test意思

"Regression test" is a term used in software testing, specifically in the context of regression testing. Regression testing is a type of testing that verifies that existing functionality in a software application has not been adversely affected by recent changes, such as new features, bug fixes, or updates.

The term "regression" refers to the possibility that a change made to the software may have unintentionally caused previously working functionality to stop working. Regression tests are designed to detect such regressions by re-running tests that were previously successful on the unchanged software.

Regression tests can be manual or automated, and they are typically prioritized based on the risk of regression and the cost of testing. For example, critical functionality that is frequently used and has a high risk of regression would be prioritized for testing.

Regression testing is an important part of maintaining the quality and reliability of software, especially for applications that are undergoing continuous development and release cycles.