Reengineering for Testability

There are many reasons to want to reengineer an existing software system. • to increase the maintainability [1], • to improve the performance [2], • to increase the interoperability [3], • to decrease the personal dependency. These goals have been covered in the pertinent literature. [4] This paper is devoted to promoting yet another goal for reengineering, namely • to improve the testability. These diverse goals may in some ways be related, but in some instances they are contrary to one another. For instance improving performance is often done at the cost of decreasing maintainability. The planer of a reengineering project must be aware of what the exact project goals are, since they will differ from project to project. [5]