Due to the fact that different PostScript files can produce the same graphic
output, regression testing could not be used. Testing the graphical files
required the use of the rtesting.pl
script. In rtesting.pl
,
the flag for the
graphical output was changed for each of the scaling factors. Then by
printing out a subset of the postscript files generated by running
rtesting.pl
, differences in each of the scaling factors could be
visually
checked. The output could also be sent to different printers to verify
printing compatibility. These postscript files need not be checked into the
RCS, so once verified, they can be removed from the test directory.