A Component Testability Model for Verification and Measurement

Since components are the major building blocks for component-based systems, developing high quality components is becoming very critical in component-based software engineering. To generate high quality components, we must pay attention to component testability to ensure that reusable components are not only can be tested by component vendors, but also can be easily validated by component users. Therefore, component testability analysis, verification and measurement become a very important research topic in testing reusable components and component-based systems. This paper discusses the component testability in a quantifiable approach based on a component testability analysis model. Engineers can use this model to verify and measure component testability during a component development process. Based on this testability model, the paper discusses testability verification and measurement using a pentagram model. A simple application example is included for component testability measurement.