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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.
18 lines
561 B
Python
18 lines
561 B
Python
from .helper import hopper
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def test_histogram():
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def histogram(mode):
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h = hopper(mode).histogram()
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return len(h), min(h), max(h)
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assert histogram("1") == (256, 0, 10994)
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assert histogram("L") == (256, 0, 662)
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assert histogram("I") == (256, 0, 662)
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assert histogram("F") == (256, 0, 662)
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assert histogram("P") == (256, 0, 1551)
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assert histogram("RGB") == (768, 4, 675)
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assert histogram("RGBA") == (1024, 0, 16384)
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assert histogram("CMYK") == (1024, 0, 16384)
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assert histogram("YCbCr") == (768, 0, 1908)
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