  In this paper we investigate the effect of long-term GUI changes occurring
during application development on the reusability of existing GUI test cases.
We conduct an empirical evaluation on two complex, open-source GUI-driven
applications for which we generate test cases of various lengths. We then
assess the replayability of generated test cases using simulation on newer
versions of the target applications and partition them according to the type of
repairing change required for their reuse.
