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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import itertools
import unittest
from nose.tools import *
from utilities import execution_path, run_all
import mapnik
from binascii import unhexlify
def test_default_constructor():
f = mapnik.Feature(mapnik.Context(),1)
eq_(f is not None,True)
def test_python_extended_constructor():
context = mapnik.Context()
context.push('foo')
context.push('foo')
f = mapnik.Feature(context,1)
wkt = 'POLYGON ((35 10, 10 20, 15 40, 45 45, 35 10),(20 30, 35 35, 30 20, 20 30))'
f.add_geometries_from_wkt(wkt)
f['foo'] = 'bar'
eq_(f['foo'], 'bar')
eq_(f.envelope(),mapnik.Box2d(10.0,10.0,45.0,45.0))
# reset
f['foo'] = u"avión"
eq_(f['foo'], u"avión")
f['foo'] = 1.4
eq_(f['foo'], 1.4)
f['foo'] = True
eq_(f['foo'], True)
def test_add_geom_wkb():
# POLYGON ((30 10, 10 20, 20 40, 40 40, 30 10))
wkb = '010300000001000000050000000000000000003e4000000000000024400000000000002440000000000000344000000000000034400000000000004440000000000000444000000000000044400000000000003e400000000000002440'
context = mapnik.Context()
f = mapnik.Feature(context,1)
eq_(len(f.geometries()), 0)
f.add_geometries_from_wkb(unhexlify(wkb))
eq_(len(f.geometries()), 1)
e = mapnik.Box2d()
eq_(e.valid(), False)
for g in f.geometries():
if not e.valid():
e = g.envelope()
else:
e +=g.envelope()
eq_(e, f.envelope())
def test_feature_expression_evaluation():
context = mapnik.Context()
context.push('name')
f = mapnik.Feature(context,1)
f['name'] = 'a'
eq_(f['name'],u'a')
expr = mapnik.Expression("[name]='a'")
evaluated = expr.evaluate(f)
eq_(evaluated,True)
num_attributes = len(f)
eq_(num_attributes,1)
eq_(f.id(),1)
# https://github.com/mapnik/mapnik/issues/933
def test_feature_expression_evaluation_missing_attr():
context = mapnik.Context()
context.push('name')
f = mapnik.Feature(context,1)
f['name'] = u'a'
eq_(f['name'],u'a')
expr = mapnik.Expression("[fielddoesnotexist]='a'")
eq_(f.has_key('fielddoesnotexist'),False)
try:
evaluated = expr.evaluate(f)
except Exception, e:
eq_("Key does not exist" in str(e),True)
num_attributes = len(f)
eq_(num_attributes,1)
eq_(f.id(),1)
# https://github.com/mapnik/mapnik/issues/934
def test_feature_expression_evaluation_attr_with_spaces():
context = mapnik.Context()
context.push('name with space')
f = mapnik.Feature(context,1)
f['name with space'] = u'a'
eq_(f['name with space'],u'a')
expr = mapnik.Expression("[name with space]='a'")
eq_(str(expr),"([name with space]='a')")
eq_(expr.evaluate(f),True)
if __name__ == "__main__":
run_all(eval(x) for x in dir() if x.startswith("test_"))
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