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import os
import mapnik
import pytest
from .utilities import execution_path, images_almost_equal
@pytest.fixture(scope="module")
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('.'))
yield
if 'shape' in mapnik.DatasourceCache.plugin_names():
def test_zoom_all_will_fail(setup):
if not os.path.exists('../data/good_maps/wgs842merc_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(512, 512)
mapnik.load_map(m, '../data/good_maps/wgs842merc_reprojection.xml')
m.zoom_all()
def test_zoom_all_will_work_with_max_extent():
if not os.path.exists('../data/good_maps/wgs842merc_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(512, 512)
mapnik.load_map(m, '../data/good_maps/wgs842merc_reprojection.xml')
merc_bounds = mapnik.Box2d(-20037508.34, -20037508.34, 20037508.34, 20037508.34)
m.maximum_extent = merc_bounds
m.zoom_all()
# note - fixAspectRatio is being called, then re-clipping to maxextent
# which makes this hard to predict
#assert m.envelope() == merc_bounds
m = mapnik.Map(512,512)
mapnik.load_map(m,'../data/good_maps/wgs842merc_reprojection.xml')
merc_bounds = mapnik.Box2d(-20037508.34,-20037508.34,20037508.34,20037508.34)
m.zoom_to_box(merc_bounds)
assert m.envelope() == merc_bounds
def test_visual_zoom_all_rendering1():
if not os.path.exists('../data/good_maps/wgs842merc_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(512, 512)
mapnik.load_map(m, '../data/good_maps/wgs842merc_reprojection.xml')
merc_bounds = mapnik.Box2d(-20037508.34, -20037508.34, 20037508.34, 20037508.34)
m.maximum_extent = merc_bounds
m.zoom_all()
im = mapnik.Image(512, 512)
mapnik.render(m, im)
actual = '/tmp/mapnik-wgs842merc-reprojection-render.png'
expected = 'images/support/mapnik-wgs842merc-reprojection-render.png'
im.save(actual, 'png32')
expected_im = mapnik.Image.open(expected)
images_almost_equal(im, expected_im)
def test_visual_zoom_all_rendering2():
if not os.path.exists('../data/good_maps/wgs842merc_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(512, 512)
mapnik.load_map(m, '../data/good_maps/merc2wgs84_reprojection.xml')
m.zoom_all()
im = mapnik.Image(512, 512)
mapnik.render(m, im)
expected_im = mapnik.Image.open('images/support/mapnik-merc2wgs84-reprojection-render.png')
images_almost_equal(im, expected_im)
# maximum-extent read from map.xml
def test_visual_zoom_all_rendering3():
if not os.path.exists('../data/good_maps/bounds_clipping.xml'):
pytest.skip('Missing data')
m = mapnik.Map(512, 512)
mapnik.load_map(m, '../data/good_maps/bounds_clipping.xml')
m.zoom_all()
im = mapnik.Image(512, 512)
mapnik.render(m, im)
expected = 'images/support/mapnik-merc2merc-reprojection-render1.png'
expected_im = mapnik.Image.open(expected)
images_almost_equal(im, expected_im)
# no maximum-extent
def test_visual_zoom_all_rendering4():
if not os.path.exists('../data/good_maps/bounds_clipping.xml'):
pytest.skip('Missing data')
m = mapnik.Map(512, 512)
mapnik.load_map(m, '../data/good_maps/bounds_clipping.xml')
m.maximum_extent = None
m.zoom_all()
im = mapnik.Image(512, 512)
mapnik.render(m, im)
expected = 'images/support/mapnik-merc2merc-reprojection-render2.png'
expected_im = mapnik.Image.open(expected)
images_almost_equal(im, expected_im)
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