New style mapscript test

[Sean Gillies]

Hi all,

On 1 May, I added Python mapscript tests of loading map objects from 
mapfile strings. Yesterday Howard expressed his concern that the doctest 
style of the new test makes the already uncomfortable Python testing 
framework worse. I disagree. I think that the new doctest:

http://trac.osgeo.org/mapserver/browser/trunk/mapserver/mapscript/python/tests/fragments.txt

is far more readable than the previous tests and also serves as a 
convenient usage example. Furthermore, this test can be easily 
incorporated into the existing framework, and can be run with every 
other test with a single command. This particular docfile can't be 
interpreted by Python 2.3, but I do not think that is a serious 
consideration for MapServer 5.0.

If you're interested in mapscript testing, check it out and let me know 
what you think.

Cheers,
Sean