A persistent predecessor is a virtual machine or testing environment that is intentionally maintained in a specific, predefined state and does not start from a clean or default state for testing purposes. This state, often referred to as a “golden image” or “baseline,” is carefully configured to represent a known and stable starting point for testing software applications or systems. By using a persistent predecessor, testers can repeatedly conduct tests and experiments in a controlled environment, ensuring consistent conditions and results for testing and validation purposes. This approach simplifies testing processes, accelerates testing cycles, and enhances the reproducibility of test results.
In essence, a persistent predecessor provides a stable and reliable foundation for testing by preserving a predetermined state, which is particularly valuable for regression testing and ensuring consistent test conditions across test runs.
The key aspects of a persistent predecessor in software testing revolve around stability, reproducibility, efficiency, and consistency. This approach simplifies testing processes, reduces the risk of environmental issues affecting results, and facilitates thorough and controlled testing of software applications or systems.