But innovation requires new code. Lots of it. So, what’s the answer to this clear, ever-present danger?
Regression testing. Its purpose is to validate the existing feature and quickly catch the defects accidentally introduced by the new code so that they don’t fester and cause bigger problems down the road.
For any product company regularly adding new features or just stringently improving their existing ones, regression testing is an important part of any QA services regiment.
Regression testing is done both manually and with a range of test automation tools. Automation can help you save a lot of time and increase the accuracy of your tests, so long as you choose the right test automation tool.
For regression testing to be effective, your QA team should outline the regression strategy, complete with entry and exit criteria. The team should also consider performance testing in the regression test plan - this will help validate that system performance is not impacted by changes made to other features.
For best results, regression testing should be built right into your test plan. If you’re using a hybrid, Agile-focused QA services vendor, your team will add regression testing into your effort estimate. If you’re on a 1-2 week sprint cycle, regression testing should be performed after completion of feature testing. For monthly releases, regression testing is performed weekly and, in some cases, daily.
Choosing the right test cases is the most important part of regression testing, as it ensures that you’re identifying and fixing the real problem areas. Look for test cases that:
Anytime a code change is done! This can be a performance improvement, a defect fix, a new feature - anything that involves a revision of the product’s code. Ideally, your QA team runs a regression test after the successful deployment and pass of a smoke test.
Anytime an application's code is changed, the code is in danger. Regression testing is a simple way to ensure the code functions properly as you continue to innovate. (Click to tweet)
Automating your regression tests can help make scheduling much easier. You can sync up the tests with build deployment so that as soon as a new build is deployed, the tests run on their own. This helps to catch any bugs far in advance of the release date.
To wrap up, regression testing is a quick, simple way to ensure that your code is functioning properly as you continue to innovate and build what matters most to your customers. If you've never launched a regression suite on your own, a qualified QA services partner can help!