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51 lines
1.1 KiB
Python
51 lines
1.1 KiB
Python
from helper import unittest, PillowTestCase
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from PIL import ImagePalette
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ImagePalette = ImagePalette.ImagePalette
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class TestImagePalette(PillowTestCase):
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def test_sanity(self):
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ImagePalette("RGB", list(range(256))*3)
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self.assertRaises(
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ValueError, lambda: ImagePalette("RGB", list(range(256))*2))
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def test_getcolor(self):
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palette = ImagePalette()
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map = {}
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for i in range(256):
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map[palette.getcolor((i, i, i))] = i
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self.assertEqual(len(map), 256)
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self.assertRaises(ValueError, lambda: palette.getcolor((1, 2, 3)))
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def test_file(self):
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palette = ImagePalette("RGB", list(range(256))*3)
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f = self.tempfile("temp.lut")
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palette.save(f)
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from PIL.ImagePalette import load, raw
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p = load(f)
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# load returns raw palette information
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self.assertEqual(len(p[0]), 768)
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self.assertEqual(p[1], "RGB")
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p = raw(p[1], p[0])
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self.assertIsInstance(p, ImagePalette)
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self.assertEqual(p.palette, palette.tobytes())
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if __name__ == '__main__':
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unittest.main()
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# End of file
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