How to enable software quality for System Migration of legacy system?

by Ben Cheng   Last Updated December 11, 2017 13:05 PM

I am migrating a legacy system from Oracle Form to Web Application. The migration is conducted with code study.

As the requirement is to migrate the existing system to Web application and keep all existing behaviour.

There are some differences in behaviour between Web application and exiting system because of completely different architecture. In addition, the functionalities of existing system is not well known.

In this situation, how should I prepare test case in order to ensure the quality of the system?



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