mapnik/tests/python_tests/ogr_and_shape_geometries_test.py

#!/usr/bin/env python

from nose.tools import *

from utilities import execution_path

import os, sys, glob, mapnik

def setup():
    # All of the paths used are relative, if we run the tests
    # from another directory we need to chdir()
    os.chdir(execution_path('.'))

# TODO - fix truncation in shapefile...
polys = ["POLYGON ((30 10, 10 20, 20 40, 40 40, 30 10))",
         "POLYGON ((35 10, 10 20, 15 40, 45 45, 35 10),(20 30, 35 35, 30 20, 20 30))",
         "MULTIPOLYGON (((30 20, 10 40, 45 40, 30 20)),((15 5, 40 10, 10 20, 5 10, 15 5)))"
         "MULTIPOLYGON (((40 40, 20 45, 45 30, 40 40)),((20 35, 45 20, 30 5, 10 10, 10 30, 20 35),(30 20, 20 25, 20 15, 30 20)))"
        ]

plugins = mapnik.DatasourceCache.instance().plugin_names()
if 'shape' in plugins and 'ogr' in plugins:

    def test_geometries_are_interpreted_equivalently():
        shapefile = '../data/shp/wkt_poly.shp'
        ds1 = mapnik.Ogr(file=shapefile,layer_by_index=0)
        ds2 = mapnik.Shapefile(file=shapefile)
        fs1 = ds1.featureset()
        fs2 = ds2.featureset()
        count = 0;
        while(True):
            count += 1
            feat1 = fs1.next()
            feat2 = fs2.next()
            if not feat1:
                break
            #import pdb;pdb.set_trace()
            #print feat1
            eq_(str(feat1),str(feat2))
            eq_(feat1.geometries().to_wkt(),feat2.geometries().to_wkt())

if __name__ == "__main__":
    setup()
    [eval(run)() for run in dir() if 'test_' in run]