from nose.tools import eq_

import mapnik

from .utilities import run_all


def test_grayscale_conversion():
    im = mapnik.Image(2, 2)
    im.fill(mapnik.Color('white'))
    im.set_grayscale_to_alpha()
    pixel = im.get_pixel(0, 0)
    eq_((pixel >> 24) & 0xff, 255)

if __name__ == "__main__":
    exit(run_all(eval(x) for x in dir() if x.startswith("test_")))