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https://github.com/python-pillow/Pillow.git
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4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
108 lines
3.0 KiB
Python
108 lines
3.0 KiB
Python
from .helper import PillowTestCase, hopper
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from PIL import Image
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class TestModeI16(PillowTestCase):
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original = hopper().resize((32, 32)).convert('I')
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def verify(self, im1):
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im2 = self.original.copy()
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self.assertEqual(im1.size, im2.size)
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pix1 = im1.load()
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pix2 = im2.load()
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for y in range(im1.size[1]):
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for x in range(im1.size[0]):
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xy = x, y
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p1 = pix1[xy]
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p2 = pix2[xy]
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self.assertEqual(
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p1, p2,
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("got %r from mode %s at %s, expected %r" %
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(p1, im1.mode, xy, p2)))
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def test_basic(self):
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# PIL 1.1 has limited support for 16-bit image data. Check that
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# create/copy/transform and save works as expected.
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def basic(mode):
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imIn = self.original.convert(mode)
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self.verify(imIn)
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w, h = imIn.size
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imOut = imIn.copy()
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self.verify(imOut) # copy
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imOut = imIn.transform((w, h), Image.EXTENT, (0, 0, w, h))
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self.verify(imOut) # transform
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filename = self.tempfile("temp.im")
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imIn.save(filename)
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imOut = Image.open(filename)
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self.verify(imIn)
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self.verify(imOut)
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imOut = imIn.crop((0, 0, w, h))
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self.verify(imOut)
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imOut = Image.new(mode, (w, h), None)
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imOut.paste(imIn.crop((0, 0, w//2, h)), (0, 0))
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imOut.paste(imIn.crop((w//2, 0, w, h)), (w//2, 0))
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self.verify(imIn)
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self.verify(imOut)
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imIn = Image.new(mode, (1, 1), 1)
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self.assertEqual(imIn.getpixel((0, 0)), 1)
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imIn.putpixel((0, 0), 2)
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self.assertEqual(imIn.getpixel((0, 0)), 2)
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if mode == "L":
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maximum = 255
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else:
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maximum = 32767
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imIn = Image.new(mode, (1, 1), 256)
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self.assertEqual(imIn.getpixel((0, 0)), min(256, maximum))
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imIn.putpixel((0, 0), 512)
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self.assertEqual(imIn.getpixel((0, 0)), min(512, maximum))
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basic("L")
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basic("I;16")
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basic("I;16B")
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basic("I;16L")
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basic("I")
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def test_tobytes(self):
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def tobytes(mode):
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return Image.new(mode, (1, 1), 1).tobytes()
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order = 1 if Image._ENDIAN == '<' else -1
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self.assertEqual(tobytes("L"), b"\x01")
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self.assertEqual(tobytes("I;16"), b"\x01\x00")
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self.assertEqual(tobytes("I;16B"), b"\x00\x01")
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self.assertEqual(tobytes("I"), b"\x01\x00\x00\x00"[::order])
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def test_convert(self):
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im = self.original.copy()
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self.verify(im.convert("I;16"))
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self.verify(im.convert("I;16").convert("L"))
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self.verify(im.convert("I;16").convert("I"))
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self.verify(im.convert("I;16B"))
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self.verify(im.convert("I;16B").convert("L"))
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self.verify(im.convert("I;16B").convert("I"))
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