unit testing CGI scripts?

[Jim Hefferon]

Hello,

Does anyone have suggestions for unit testing CGI scripts?  For
instance, how can I set the FieldStorage to have certain values?
Do I have to go with a dummy FieldStorage class?  And is there a
better way to check the output than to compare the resulting (sometimes
very large) strings?  Changing the HTML slightly means that I have to
edit the tests and that defeats the purpose of the tests, to 
some extent.  I'd greatly appreciate any tips.

Thanks,
Jim