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# coding=utf8
import os
from nose.tools import eq_
from nose.plugins.skip import SkipTest
import mapnik
from .utilities import execution_path, run_all
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 'sqlite' in mapnik.DatasourceCache.plugin_names():
# the negative buffer on the layer should
# override the postive map buffer leading
# only one point to be rendered in the map
def test_layer_buffer_size_1():
if not os.path.exists('../data/good_maps/layer_buffer_size_reduction.xml'):
raise SkipTest
m = mapnik.Map(512, 512)
eq_(m.buffer_size, 0)
mapnik.load_map(m, '../data/good_maps/layer_buffer_size_reduction.xml')
eq_(m.buffer_size, 256)
eq_(m.layers[0].buffer_size, -150)
m.zoom_all()
im = mapnik.Image(m.width, m.height)
mapnik.render(m, im)
actual = '/tmp/mapnik-layer-buffer-size.png'
expected = 'images/support/mapnik-layer-buffer-size.png'
im.save(actual, "png32")
expected_im = mapnik.Image.open(expected)
eq_(im.tostring('png32'),
expected_im.tostring('png32'),
'failed comparing actual (%s) and expected (%s)' % (actual,
'tests/python_tests/' + expected))
if __name__ == "__main__":
setup()
exit(run_all(eval(x) for x in dir() if x.startswith("test_")))
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