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#!/usr/bin/env python
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('.'))
def test_field_listing():
lyr = mapnik.Layer('test')
lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
fields = lyr.datasource.fields()
eq_(fields, ['AREA', 'EAS_ID', 'PRFEDEA'])
def test_total_feature_count():
lyr = mapnik.Layer('test')
lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
features = lyr.datasource.all_features()
num_feats = len(features)
eq_(num_feats, 10)
def test_feature_envelope():
lyr = mapnik.Layer('test')
lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
features = lyr.datasource.all_features()
for feat in features:
env = feat.envelope()
contains = lyr.envelope().contains(env)
eq_(contains, True)
intersects = lyr.envelope().contains(env)
eq_(intersects, True)
def test_feature_attributes():
lyr = mapnik.Layer('test')
lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
features = lyr.datasource.all_features()
feat = features[0]
attrs = {'PRFEDEA': u'35043411', 'EAS_ID': 168, 'AREA': 215229.266}
eq_(feat.attributes, attrs)
fld_name = 'AREA'
fld_idx = lyr.datasource.fields().index(fld_name)
eq_(lyr.datasource.field_types()[fld_idx],type(feat.attributes[fld_name]))
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