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75 lines
2.1 KiB
Python
75 lines
2.1 KiB
Python
from helper import unittest, PillowTestCase, lena
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from PIL import Image
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from PIL import ImageChops
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class TestImage(PillowTestCase):
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def test_sanity(self):
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im = lena("L")
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ImageChops.constant(im, 128)
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ImageChops.duplicate(im)
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ImageChops.invert(im)
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ImageChops.lighter(im, im)
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ImageChops.darker(im, im)
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ImageChops.difference(im, im)
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ImageChops.multiply(im, im)
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ImageChops.screen(im, im)
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ImageChops.add(im, im)
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ImageChops.add(im, im, 2.0)
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ImageChops.add(im, im, 2.0, 128)
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ImageChops.subtract(im, im)
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ImageChops.subtract(im, im, 2.0)
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ImageChops.subtract(im, im, 2.0, 128)
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ImageChops.add_modulo(im, im)
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ImageChops.subtract_modulo(im, im)
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ImageChops.blend(im, im, 0.5)
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ImageChops.composite(im, im, im)
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ImageChops.offset(im, 10)
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ImageChops.offset(im, 10, 20)
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def test_logical(self):
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def table(op, a, b):
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out = []
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for x in (a, b):
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imx = Image.new("1", (1, 1), x)
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for y in (a, b):
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imy = Image.new("1", (1, 1), y)
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out.append(op(imx, imy).getpixel((0, 0)))
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return tuple(out)
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self.assertEqual(
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table(ImageChops.logical_and, 0, 1), (0, 0, 0, 255))
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self.assertEqual(
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table(ImageChops.logical_or, 0, 1), (0, 255, 255, 255))
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self.assertEqual(
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table(ImageChops.logical_xor, 0, 1), (0, 255, 255, 0))
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self.assertEqual(
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table(ImageChops.logical_and, 0, 128), (0, 0, 0, 255))
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self.assertEqual(
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table(ImageChops.logical_or, 0, 128), (0, 255, 255, 255))
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self.assertEqual(
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table(ImageChops.logical_xor, 0, 128), (0, 255, 255, 0))
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self.assertEqual(
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table(ImageChops.logical_and, 0, 255), (0, 0, 0, 255))
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self.assertEqual(
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table(ImageChops.logical_or, 0, 255), (0, 255, 255, 255))
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self.assertEqual(
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table(ImageChops.logical_xor, 0, 255), (0, 255, 255, 0))
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if __name__ == '__main__':
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unittest.main()
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# End of file
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