Design-Based Test Case Design an Effective Software Testing Technique

Software design errors and faults can be discovered and software designs validated by two techniques like:

1) Requirements-based test case design being the primary technique

2) Another important technique being the early design-based test case design.

In design-based test case design the information for deriving them is taken from the software design documentation.

Design-based test cases focus on the data and process paths within the software structures. Internal interfaces, complex paths or processes, worst-case scenarios, design risks and weak areas, etc. are all explored by constructing specialized test cases and analyzing how the design should handle them and whether it deals with them properly. In software testing effort, requirements-based and design-based test cases provide specific examples that can be used in design reviews or walkthroughs. Together they provide a comprehensive and rich resource for design based software testing.