The Application of Interval Computation in Software Testing

There are four phases in structural testing: static analysis, path selection, case generation and dynamic analysis. In this paper, the authors use interval computation as deduction in the third phase, case generation. Because of the introduction of normal forms of constraints, the authors can analyze complicated logic expressions now, and get the answer. This method is very flexible, with the capability of dealing with non linear constraints. And when extended, it can even deal with functions in expressions.