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import os
import mapnik
import pytest
from .utilities import execution_path
@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
# map has no layers
def test_map_query_throw1(setup):
with pytest.raises(IndexError):
m = mapnik.Map(256, 256)
m.zoom_to_box(mapnik.Box2d(-1, -1, 0, 0))
m.query_point(0, 0, 0)
# only positive indexes
def test_map_query_throw2():
with pytest.raises(IndexError):
m = mapnik.Map(256, 256)
m.query_point(-1, 0, 0)
# map has never been zoomed (nodata)
def test_map_query_throw3():
with pytest.raises(RuntimeError):
m = mapnik.Map(256, 256)
m.query_point(0, 0, 0)
if 'shape' in mapnik.DatasourceCache.plugin_names():
# map has never been zoomed (even with data)
def test_map_query_throw4():
if not os.path.exists('../data/good_maps/agg_poly_gamma_map.xml'):
pytest.skip('Missing data')
with pytest.raises(RuntimeError):
m = mapnik.Map(256, 256)
mapnik.load_map(m, '../data/good_maps/agg_poly_gamma_map.xml')
m.query_point(0, 0, 0)
# invalid coords in general (do not intersect)
def test_map_query_throw5():
if not os.path.exists('../data/good_maps/agg_poly_gamma_map.xml'):
pytest.skip('Missing data')
with pytest.raises(RuntimeError):
m = mapnik.Map(256, 256)
mapnik.load_map(m, '../data/good_maps/agg_poly_gamma_map.xml')
m.zoom_all()
m.query_point(0, 9999999999999999, 9999999999999999)
def test_map_query_works1():
if not os.path.exists('../data/good_maps/wgs842merc_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(256, 256)
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()
# somewhere in kansas
fs = m.query_point(0, -11012435.5376, 4599674.6134)
feat = fs.next()
assert feat.attributes['NAME_FORMA'] == u'United States of America'
def test_map_query_works2():
if not os.path.exists('../data/good_maps/merc2wgs84_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(256, 256)
mapnik.load_map(m, '../data/good_maps/merc2wgs84_reprojection.xml')
wgs84_bounds = mapnik.Box2d(-179.999999975, -
85.0511287776, 179.999999975, 85.0511287776)
m.maximum_extent = wgs84_bounds
# caution - will go square due to evil aspect_fix_mode backhandedness
m.zoom_all()
# mapnik.render_to_file(m,'works2.png')
# validate that aspect_fix_mode modified the bbox reasonably
e = m.envelope()
assert e.minx == pytest.approx(-179.999999975, abs=1e-7)
assert e.miny == pytest.approx(-167.951396161, abs=1e-7)
assert e.maxx == pytest.approx(179.999999975, abs=1e-7)
assert e.maxy == pytest.approx(192.048603789, abs=1e-7)
fs = m.query_point(0, -98.9264, 38.1432) # somewhere in kansas
feat = fs.next()
assert feat.attributes['NAME'] == u'United States'
def test_map_query_in_pixels_works1():
if not os.path.exists('../data/good_maps/wgs842merc_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(256, 256)
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()
fs = m.query_map_point(0, 55, 100) # somewhere in middle of us
feat = fs.next()
assert feat.attributes['NAME_FORMA'] == u'United States of America'
def test_map_query_in_pixels_works2():
if not os.path.exists('../data/good_maps/merc2wgs84_reprojection.xml'):
pytest.skip('Missing data')
m = mapnik.Map(256, 256)
mapnik.load_map(m, '../data/good_maps/merc2wgs84_reprojection.xml')
wgs84_bounds = mapnik.Box2d(-179.999999975, -
85.0511287776, 179.999999975, 85.0511287776)
m.maximum_extent = wgs84_bounds
# caution - will go square due to evil aspect_fix_mode backhandedness
m.zoom_all()
# validate that aspect_fix_mode modified the bbox reasonably
e = m.envelope()
assert e.minx == pytest.approx(-179.999999975, abs=1e-7)
assert e.miny == pytest.approx(-167.951396161, abs=1e-7)
assert e.maxx == pytest.approx(179.999999975, abs=1e-7)
assert e.maxy == pytest.approx(192.048603789, abs=1e-7)
fs = m.query_map_point(0, 55, 100) # somewhere in Canada
feat = fs.next()
assert feat.attributes['NAME'] == u'Canada'
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