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Regression Testing

 

Regression Testing is a process which tests a system once again to ensure that it still functions as expected / as per specification. The reason for this renewed testing activity is usually when a material change occurs to the system. For example; a new hardware platform; a major release of the operating system (e.g. Windows NT® to Windows 2000®). In addition, where say, the software vendor releases a new version of its database, a comprehension regression test plan needs to be developed and completed to ensure that the reports, screen, scripts, Remote Procedure Calls and User options, are all functioning as expected. Warning! the chances are, that they will not work completely as expected, and that you will need to modify / change certain aspects of your configuration.

N.B. Regression Testing must also test the revised software by simulating its operational environment to ensure that all systems and interfaces still operate as expected.

Regression Testing should be conducted as per any system testing as proceed according to a Test Plan. If you do not perform Regression Testing, then your system could fail upon upgrade.


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