Retesting and regression testing are later-stage additions in software testing to establish how successful test scenarios are and whether any new defects have been introduced. Think of the two processes as ironing out any remaining wrinkles in your code. It’s a key double check to make sure software meets its own requirements.

Quality House is a firm champion of meticulous retesting and regression testing, which are cornerstones in every job we take on.

Why Is Retesting Important?

In short, retesting has a crucial function. Quality House specialists rerun the same test scenarios, which during the testing phase have caught defects once those defects are claimed to be fixed. If the scenario brings nothing new out, the defect has been dealt with for good and your software product comes all the closer to being consumer-ready.

As retesting focuses on granular details in individual components and functionalities, it comes before regression testing, which has a much broader function and a larger role later on.

Regression Testing Locates Newly Introduced Defects

You can never truly predict how code will react to changes. Any change as a result of fixing a defect can cause ripples that affect the same functionality in a different manner, affect other functionalities, or impact system integration. This applies to any change made somewhere in the system – adding new functionality, altering a functionality, switching one module with another. Regression testing performed after completing all retesting activities gives the entire system a comb-over to test performance.
Quality House specialists pay close attention to how existing features respond and compare their behavior to the data and reports we’ve collected along with project requirements. We do this by running full or partial selections of already executed test cases as a way to piece the puzzle and see how every functionality and feature fits together as a whole.

We integrate old code with new code, but regression testing has further uses apart from defect fixing and performance issue fix. It becomes a mandatory step when the client administers modifications to requirements that demand changes to code and when a new feature is introduced and has to be integrated within the system.