What’s most important in software? I’d say staying close to zero bugs as much as possible but it’s not that simple when the software is big and constantly updated with new features. The regression testing is perfect for this scenario.
When you introduce a new feature and want to make sure this won’t break any existing features, you run regression testing.
Simply put, this testing is running all of the features from 0 to 100 again so that the new feature isn’t making any trouble with them. It sounds time-consuming — Yes, it is taking a lot of time to verify, especially for a big project. But it’s also inevitable to keep the best quality of the software. That’s why most regression testing adopted automated testing tools. It could be specific tools or automated scripts.
