Patent ID: 6490696
Filing Date: 2002-12-03
Classification: G06F

Abstract:
A method for identifying and determining the source of changes in printed output when a software program that produces printed output is changed, comprising the steps of:providing a computer having a CPU, a memory device, a data storage device and an input device; connecting the computer to a video display terminal; connecting the computer to a printer; loading a display list regression testing software module into the memory of the computer; loading a first version of a software program into the memory of the computer system; issuing a set of known commands to the first version of the software program; causing the first version of the software program to generate at least one reference display list; loading a second modified version of the first software program into the memory of the computer system; issuing the set of known commands to the second version of the software program, causing the second version of the software program to create a new second display list, comparing the second display list to the reference display list, identifying any differences between the second display list and the reference display list, storing the differences in the computer memory for subsequent analysis to determine the probable cause of any difference between the reference display list and the second display list.