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68 lines
2.0 KiB
Python
68 lines
2.0 KiB
Python
from .helper import PillowTestCase, hopper
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class TestImageGetColors(PillowTestCase):
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def test_getcolors(self):
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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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self.assertEqual(getcolors("1"), 2)
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self.assertEqual(getcolors("L"), 255)
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self.assertEqual(getcolors("I"), 255)
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self.assertEqual(getcolors("F"), 255)
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self.assertEqual(getcolors("P"), 90) # fixed palette
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self.assertIsNone(getcolors("RGB"))
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self.assertIsNone(getcolors("RGBA"))
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self.assertIsNone(getcolors("CMYK"))
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self.assertIsNone(getcolors("YCbCr"))
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self.assertIsNone(getcolors("L", 128))
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self.assertEqual(getcolors("L", 1024), 255)
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self.assertIsNone(getcolors("RGB", 8192))
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self.assertEqual(getcolors("RGB", 16384), 10100)
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self.assertEqual(getcolors("RGB", 100000), 10100)
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self.assertEqual(getcolors("RGBA", 16384), 10100)
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self.assertEqual(getcolors("CMYK", 16384), 10100)
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self.assertEqual(getcolors("YCbCr", 16384), 9329)
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# --------------------------------------------------------------------
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def test_pack(self):
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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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self.assertIsNone(A)
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A = im.getcolors(maxcolors=3)
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A.sort()
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self.assertEqual(A, expected)
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A = im.getcolors(maxcolors=4)
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A.sort()
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self.assertEqual(A, expected)
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A = im.getcolors(maxcolors=8)
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A.sort()
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self.assertEqual(A, expected)
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A = im.getcolors(maxcolors=16)
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A.sort()
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self.assertEqual(A, expected)
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