mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-09-21 11:28:58 +03:00
40 lines
1.1 KiB
Python
40 lines
1.1 KiB
Python
from PIL import Image
|
|
|
|
from .helper import PillowTestCase
|
|
|
|
|
|
class TestFormatLab(PillowTestCase):
|
|
def test_white(self):
|
|
with Image.open("Tests/images/lab.tif") as i:
|
|
i.load()
|
|
|
|
self.assertEqual(i.mode, "LAB")
|
|
|
|
self.assertEqual(i.getbands(), ("L", "A", "B"))
|
|
|
|
k = i.getpixel((0, 0))
|
|
|
|
L = i.getdata(0)
|
|
a = i.getdata(1)
|
|
b = i.getdata(2)
|
|
|
|
self.assertEqual(k, (255, 128, 128))
|
|
|
|
self.assertEqual(list(L), [255] * 100)
|
|
self.assertEqual(list(a), [128] * 100)
|
|
self.assertEqual(list(b), [128] * 100)
|
|
|
|
def test_green(self):
|
|
# l= 50 (/100), a = -100 (-128 .. 128) b=0 in PS
|
|
# == RGB: 0, 152, 117
|
|
with Image.open("Tests/images/lab-green.tif") as i:
|
|
k = i.getpixel((0, 0))
|
|
self.assertEqual(k, (128, 28, 128))
|
|
|
|
def test_red(self):
|
|
# l= 50 (/100), a = 100 (-128 .. 128) b=0 in PS
|
|
# == RGB: 255, 0, 124
|
|
with Image.open("Tests/images/lab-red.tif") as i:
|
|
k = i.getpixel((0, 0))
|
|
self.assertEqual(k, (128, 228, 128))
|