SQA Engineer Question:

Developer testing is essential to avoid high rework costs. To the testers, the software is a black box. Only the developers have the view and access to the code to test all conditions. In addition, not only are functional cases at stake, but also the structural tests for memory boundary violations and memory leaks.

My experience is that developers can test software if the have a good process to follow, standards to show what is expected of them in terms of testing, and a way to hold developers accountable for the quality of their work. Management must also be making the message loud and clear that testing is part of the job and that quality is a shared responsibility between developers, testers, QA, and management.