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):

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():

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():

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():

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():

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():

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)