Pillow/Tests/test_imageops.py

82 lines
2.0 KiB
Python
Raw Normal View History

from tester import *
from PIL import Image
from PIL import ImageOps
class Deformer:
def getmesh(self, im):
x, y = im.size
return [((0, 0, x, y), (0, 0, x, 0, x, y, y, 0))]
deformer = Deformer()
def test_sanity():
ImageOps.autocontrast(lena("L"))
ImageOps.autocontrast(lena("RGB"))
ImageOps.autocontrast(lena("L"), cutoff=10)
ImageOps.autocontrast(lena("L"), ignore=[0, 255])
ImageOps.colorize(lena("L"), (0, 0, 0), (255, 255, 255))
ImageOps.colorize(lena("L"), "black", "white")
ImageOps.crop(lena("L"), 1)
ImageOps.crop(lena("RGB"), 1)
ImageOps.deform(lena("L"), deformer)
ImageOps.deform(lena("RGB"), deformer)
ImageOps.equalize(lena("L"))
ImageOps.equalize(lena("RGB"))
ImageOps.expand(lena("L"), 1)
ImageOps.expand(lena("RGB"), 1)
ImageOps.expand(lena("L"), 2, "blue")
ImageOps.expand(lena("RGB"), 2, "blue")
ImageOps.fit(lena("L"), (128, 128))
ImageOps.fit(lena("RGB"), (128, 128))
ImageOps.flip(lena("L"))
ImageOps.flip(lena("RGB"))
ImageOps.grayscale(lena("L"))
ImageOps.grayscale(lena("RGB"))
ImageOps.invert(lena("L"))
ImageOps.invert(lena("RGB"))
ImageOps.mirror(lena("L"))
ImageOps.mirror(lena("RGB"))
ImageOps.posterize(lena("L"), 4)
ImageOps.posterize(lena("RGB"), 4)
ImageOps.solarize(lena("L"))
ImageOps.solarize(lena("RGB"))
success()
def test_1pxfit():
# Division by zero in equalize if image is 1 pixel high
newimg = ImageOps.fit(lena("RGB").resize((1,1)), (35,35))
assert_equal(newimg.size,(35,35))
newimg = ImageOps.fit(lena("RGB").resize((1,100)), (35,35))
assert_equal(newimg.size,(35,35))
newimg = ImageOps.fit(lena("RGB").resize((100,1)), (35,35))
assert_equal(newimg.size,(35,35))
def test_pil163():
# Division by zero in equalize if < 255 pixels in image (@PIL163)
i = lena("RGB").resize((15, 16))
ImageOps.equalize(i.convert("L"))
ImageOps.equalize(i.convert("P"))
ImageOps.equalize(i.convert("RGB"))
success()