mapnik/tests/python_tests/shapefile_test.py
2012-01-24 15:16:40 -08:00

59 lines
2.1 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from nose.tools import *
from utilities import execution_path
import os, 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('.'))
if 'shape' in mapnik.DatasourceCache.instance().plugin_names():
# Shapefile initialization
def test_shapefile_init():
s = mapnik.Shapefile(file='../../demo/data/boundaries')
e = s.envelope()
assert_almost_equal(e.minx, -11121.6896651, places=7)
assert_almost_equal(e.miny, -724724.216526, places=6)
assert_almost_equal(e.maxx, 2463000.67866, places=5)
assert_almost_equal(e.maxy, 1649661.267, places=3)
# Shapefile properties
def test_shapefile_properties():
s = mapnik.Shapefile(file='../../demo/data/boundaries', encoding='latin1')
f = s.features_at_point(s.envelope().center()).features[0]
eq_(f['CGNS_FID'], u'6f733341ba2011d892e2080020a0f4c9')
eq_(f['COUNTRY'], u'CAN')
eq_(f['F_CODE'], u'FA001')
eq_(f['NAME_EN'], u'Quebec')
# this seems to break if icu data linking is not working
eq_(f['NOM_FR'], u'Qu\xe9bec')
eq_(f['NOM_FR'], u'Québec')
eq_(f['Shape_Area'], 1512185733150.0)
eq_(f['Shape_Leng'], 19218883.724300001)
@raises(RuntimeError)
def test_that_nonexistant_query_field_throws(**kwargs):
ds = mapnik.Shapefile(file='../data/shp/world_merc')
eq_(len(ds.fields()),11)
eq_(ds.fields(),['FIPS', 'ISO2', 'ISO3', 'UN', 'NAME', 'AREA', 'POP2005', 'REGION', 'SUBREGION', 'LON', 'LAT'])
eq_(ds.field_types(),['str', 'str', 'str', 'int', 'str', 'int', 'int', 'int', 'int', 'float', 'float'])
query = mapnik.Query(ds.envelope())
for fld in ds.fields():
query.add_property_name(fld)
# also add an invalid one, triggering throw
query.add_property_name('bogus')
fs = ds.features(query)
if __name__ == "__main__":
setup()
[eval(run)() for run in dir() if 'test_' in run]