regression testing

Regression testing is the process of testing changes to computer programs to make sure that the older programming still works with the new changes. Regression testing is a normal part of the program development process and, in larger companies, is done by code testing specialists. Test department coders develop code test scenarios and exercises that will test new units of code after they have been written. These test cases form what becomes the test bucket. Before a new version of a software product is released, the old test cases are run against the new version to make sure that all the old capabilities still work. The reason they might not work is because changing or adding new code to a program can easily introduce errors into code that is not intended to be changed.

Getting started with regression testing
To explore how regression testing is used in the enterprise, here are some additional resources for learning about software quality assurance tools:
Software testing fundamentals - Regression testing: Regression testing ensures that little changes don't break software. Good regression testers need to know what they're looking for, and this guide explains how.
Regression testing is more than retesting: Regression testing is a necessary component to any software development lifecycle. Expert Mike Kelly explains the motivations for conducting regression tests.
How to conduct regression tests: If regression testing is part of your test plan, here is some advice you should follow. Expert Mike Kelly explains how to properly conduct such testing.
This was last updated in February 2007

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