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21 lines
758 B
Python
21 lines
758 B
Python
from .helper import PillowTestCase, hopper
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class TestImageHistogram(PillowTestCase):
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def test_histogram(self):
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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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self.assertEqual(histogram("1"), (256, 0, 10994))
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self.assertEqual(histogram("L"), (256, 0, 638))
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self.assertEqual(histogram("I"), (256, 0, 638))
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self.assertEqual(histogram("F"), (256, 0, 638))
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self.assertEqual(histogram("P"), (256, 0, 1871))
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self.assertEqual(histogram("RGB"), (768, 4, 675))
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self.assertEqual(histogram("RGBA"), (1024, 0, 16384))
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self.assertEqual(histogram("CMYK"), (1024, 0, 16384))
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self.assertEqual(histogram("YCbCr"), (768, 0, 1908))
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