Change impact analysis for class hierarchy

It is obvious that small changes made in a part of program can inheritance and class composition, it is more serious that small have major and nonlocal effects in object-oriented programs. Therefore, reducing the expense of regression testing is very important. Program slicing is an important method for program analysis and testing. Tip is the only known one that has presented a method for slicing class hierarchies. It can slice class members of object-oriented programs. Tip's method is based on the Rossie-Friedman framework. However, its aim is to optimize object-oriented programs, thus not directly applicable to change impact analysis and regression testing. This paper presents a novel slicing method, called backward-slicing method, on class members. The new method is also based on the Rossie-Friedman framework. Furthermore, we present a change impact analysis strategy using granularity at the class member level.