Software components and component-based software development (CBSD) are acknowledged as the best approach for constructing quality software at reasonable cost. Composing Software Components: A Software-testing Perspective describes a 10-year investigation into the underlying principles of CBSD. By restricting attention to the simplest cases, startling results are obtained:

-Components are tested using only executable code. Their behavior is recorded and presented graphically.

-Functional and non-functional behavior of systems synthesized from components are calculated from...