Design for Testability in Software Systems

Building reliable software is becoming more and more important considering that software applications are becoming pervasive in our daily lives. The need for more reliable software requires that, amongst others, it is adequately tested to give greater confidence in its ability to perform as expected. However, testing software becomes a tedious task as the size and complexity of software increases, therefore, the next logical step is to make the task of testing easier and more effective. In other words, improving on the testability of the software. Improvement of testability can be achieved through applying certain tactics in practice that improve on a tester’s ability to manipulate the software and to observe and interpret the results from the execution of tests.