Pillow/Tests/test_image_getpixel.py

50 lines
1.2 KiB
Python

from tester import *
from PIL import Image
Image.USE_CFFI_ACCESS=False
def color(mode):
bands = Image.getmodebands(mode)
if bands == 1:
return 1
else:
return tuple(range(1, bands+1))
def check(mode, c=None):
if not c:
c = color(mode)
#check putpixel
im = Image.new(mode, (1, 1), None)
im.putpixel((0, 0), c)
assert_equal(im.getpixel((0, 0)), c,
"put/getpixel roundtrip failed for mode %s, color %s" %
(mode, c))
# check inital color
im = Image.new(mode, (1, 1), c)
assert_equal(im.getpixel((0, 0)), c,
"initial color failed for mode %s, color %s " %
(mode, color))
def test_basic():
for mode in ("1", "L", "LA", "I", "I;16", "I;16B", "F",
"P", "PA", "RGB", "RGBA", "RGBX", "CMYK","YCbCr"):
check(mode)
def test_signedness():
# see https://github.com/python-imaging/Pillow/issues/452
# pixelaccess is using signed int* instead of uint*
for mode in ("I;16", "I;16B"):
check(mode, 2**15-1)
check(mode, 2**15)
check(mode, 2**15+1)
check(mode, 2**16-1)