Evaluating Requirements for Testability

Rodger Drabick, Lockheed Martin Transportation & Security Solutions

For a test engineer, perhaps the most important measure of requirements quality is testability. By improving testability during requirements development, you not only will make test design easier, but you also will have gone a long way toward building better software for less cost. Learn methods to identify the requirements problems that reduce or improve testability: ambiguity, incompleteness, inconsistency, incorrectness, and "compoundness." This method first was used successfully in a very large payroll system development project and has since been practiced in both large and small development projects. From this session take away a spreadsheet-based method for tracking requirements testability throughout the project, and see examples from an Access database that can be used for further requirements analysis.

  • How to analyze requirements for attributes that increase testability
  • A way to correlate requirements testability analysis results
  • What can go wrong with this practice

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