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9f9e26522e
This fixes a bug with rounding pixels to the nearest palette color. Specifically, there is a typo with computing the minimum distance from a palette color to a given cache box. This is causing palette colors to be incorrectly excluded from consideration.
69 lines
1.6 KiB
Python
69 lines
1.6 KiB
Python
from .helper import hopper
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def test_getcolors():
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def getcolors(mode, limit=None):
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im = hopper(mode)
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if limit:
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colors = im.getcolors(limit)
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else:
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colors = im.getcolors()
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if colors:
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return len(colors)
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return None
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assert getcolors("1") == 2
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assert getcolors("L") == 255
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assert getcolors("I") == 255
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assert getcolors("F") == 255
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assert getcolors("P") == 96 # fixed palette
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assert getcolors("RGB") is None
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assert getcolors("RGBA") is None
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assert getcolors("CMYK") is None
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assert getcolors("YCbCr") is None
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assert getcolors("L", 128) is None
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assert getcolors("L", 1024) == 255
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assert getcolors("RGB", 8192) is None
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assert getcolors("RGB", 16384) == 10100
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assert getcolors("RGB", 100000) == 10100
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assert getcolors("RGBA", 16384) == 10100
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assert getcolors("CMYK", 16384) == 10100
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assert getcolors("YCbCr", 16384) == 9329
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# --------------------------------------------------------------------
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def test_pack():
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# Pack problems for small tables (@PIL209)
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im = hopper().quantize(3).convert("RGB")
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expected = [
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(4039, (172, 166, 181)),
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(4385, (124, 113, 134)),
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(7960, (31, 20, 33)),
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]
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A = im.getcolors(maxcolors=2)
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assert A is None
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A = im.getcolors(maxcolors=3)
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A.sort()
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assert A == expected
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A = im.getcolors(maxcolors=4)
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A.sort()
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assert A == expected
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A = im.getcolors(maxcolors=8)
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A.sort()
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assert A == expected
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A = im.getcolors(maxcolors=16)
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A.sort()
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assert A == expected
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