Pillow/Tests/test_imageops.py

84 lines
2.4 KiB
Python

from helper import unittest, PillowTestCase, hopper
from PIL import ImageOps
class TestImageOps(PillowTestCase):
class Deformer(object):
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(self):
ImageOps.autocontrast(hopper("L"))
ImageOps.autocontrast(hopper("RGB"))
ImageOps.autocontrast(hopper("L"), cutoff=10)
ImageOps.autocontrast(hopper("L"), ignore=[0, 255])
ImageOps.colorize(hopper("L"), (0, 0, 0), (255, 255, 255))
ImageOps.colorize(hopper("L"), "black", "white")
ImageOps.crop(hopper("L"), 1)
ImageOps.crop(hopper("RGB"), 1)
ImageOps.deform(hopper("L"), self.deformer)
ImageOps.deform(hopper("RGB"), self.deformer)
ImageOps.equalize(hopper("L"))
ImageOps.equalize(hopper("RGB"))
ImageOps.expand(hopper("L"), 1)
ImageOps.expand(hopper("RGB"), 1)
ImageOps.expand(hopper("L"), 2, "blue")
ImageOps.expand(hopper("RGB"), 2, "blue")
ImageOps.fit(hopper("L"), (128, 128))
ImageOps.fit(hopper("RGB"), (128, 128))
ImageOps.flip(hopper("L"))
ImageOps.flip(hopper("RGB"))
ImageOps.grayscale(hopper("L"))
ImageOps.grayscale(hopper("RGB"))
ImageOps.invert(hopper("L"))
ImageOps.invert(hopper("RGB"))
ImageOps.mirror(hopper("L"))
ImageOps.mirror(hopper("RGB"))
ImageOps.posterize(hopper("L"), 4)
ImageOps.posterize(hopper("RGB"), 4)
ImageOps.solarize(hopper("L"))
ImageOps.solarize(hopper("RGB"))
def test_1pxfit(self):
# Division by zero in equalize if image is 1 pixel high
newimg = ImageOps.fit(hopper("RGB").resize((1, 1)), (35, 35))
self.assertEqual(newimg.size, (35, 35))
newimg = ImageOps.fit(hopper("RGB").resize((1, 100)), (35, 35))
self.assertEqual(newimg.size, (35, 35))
newimg = ImageOps.fit(hopper("RGB").resize((100, 1)), (35, 35))
self.assertEqual(newimg.size, (35, 35))
def test_pil163(self):
# Division by zero in equalize if < 255 pixels in image (@PIL163)
i = hopper("RGB").resize((15, 16))
ImageOps.equalize(i.convert("L"))
ImageOps.equalize(i.convert("P"))
ImageOps.equalize(i.convert("RGB"))
if __name__ == '__main__':
unittest.main()