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# coding=utf8
import os
import sys
from nose.tools import eq_
import mapnik
from .utilities import execution_path, run_all
PYTHON3 = sys.version_info[0] == 3
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('.'))
# test discrete colorizer mode
def test_get_color_discrete():
# setup
colorizer = mapnik.RasterColorizer()
colorizer.default_color = mapnik.Color(0, 0, 0, 0)
colorizer.default_mode = mapnik.COLORIZER_DISCRETE
colorizer.add_stop(10, mapnik.Color(100, 100, 100, 100))
colorizer.add_stop(20, mapnik.Color(200, 200, 200, 200))
# should be default colour
eq_(colorizer.get_color(-50), mapnik.Color(0, 0, 0, 0))
eq_(colorizer.get_color(0), mapnik.Color(0, 0, 0, 0))
# now in stop 1
eq_(colorizer.get_color(10), mapnik.Color(100, 100, 100, 100))
eq_(colorizer.get_color(19), mapnik.Color(100, 100, 100, 100))
# now in stop 2
eq_(colorizer.get_color(20), mapnik.Color(200, 200, 200, 200))
eq_(colorizer.get_color(1000), mapnik.Color(200, 200, 200, 200))
# test exact colorizer mode
def test_get_color_exact():
# setup
colorizer = mapnik.RasterColorizer()
colorizer.default_color = mapnik.Color(0, 0, 0, 0)
colorizer.default_mode = mapnik.COLORIZER_EXACT
colorizer.add_stop(10, mapnik.Color(100, 100, 100, 100))
colorizer.add_stop(20, mapnik.Color(200, 200, 200, 200))
# should be default colour
eq_(colorizer.get_color(-50), mapnik.Color(0, 0, 0, 0))
eq_(colorizer.get_color(11), mapnik.Color(0, 0, 0, 0))
eq_(colorizer.get_color(20.001), mapnik.Color(0, 0, 0, 0))
# should be stop 1
eq_(colorizer.get_color(10), mapnik.Color(100, 100, 100, 100))
# should be stop 2
eq_(colorizer.get_color(20), mapnik.Color(200, 200, 200, 200))
# test linear colorizer mode
def test_get_color_linear():
# setup
colorizer = mapnik.RasterColorizer()
colorizer.default_color = mapnik.Color(0, 0, 0, 0)
colorizer.default_mode = mapnik.COLORIZER_LINEAR
colorizer.add_stop(10, mapnik.Color(100, 100, 100, 100))
colorizer.add_stop(20, mapnik.Color(200, 200, 200, 200))
# should be default colour
eq_(colorizer.get_color(-50), mapnik.Color(0, 0, 0, 0))
eq_(colorizer.get_color(9.9), mapnik.Color(0, 0, 0, 0))
# should be stop 1
eq_(colorizer.get_color(10), mapnik.Color(100, 100, 100, 100))
# should be stop 2
eq_(colorizer.get_color(20), mapnik.Color(200, 200, 200, 200))
# half way between stops 1 and 2
eq_(colorizer.get_color(15), mapnik.Color(150, 150, 150, 150))
# after stop 2
eq_(colorizer.get_color(100), mapnik.Color(200, 200, 200, 200))
def test_stop_label():
stop = mapnik.ColorizerStop(
1, mapnik.COLORIZER_LINEAR, mapnik.Color('red'))
assert not stop.label
label = u"32ยบ C"
if not PYTHON3:
label = label.encode('utf8')
stop.label = label
assert stop.label == label, stop.label
if __name__ == "__main__":
setup()
exit(run_all(eval(x) for x in dir() if x.startswith("test_")))
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