import mapnik
from nose.tools import *

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

if __name__ == "__main__":
    [eval(run)() for run in dir() if 'test_' in run]