Pillow/Tests/test_image_histogram.py
2019-12-31 04:12:50 +03:00

19 lines
756 B
Python

from .helper import PillowTestCase, hopper
class TestImageHistogram(PillowTestCase):
def test_histogram(self):
def histogram(mode):
h = hopper(mode).histogram()
return len(h), min(h), max(h)
self.assertEqual(histogram("1"), (256, 0, 10994))
self.assertEqual(histogram("L"), (256, 0, 662))
self.assertEqual(histogram("I"), (256, 0, 662))
self.assertEqual(histogram("F"), (256, 0, 662))
self.assertEqual(histogram("P"), (256, 0, 1871))
self.assertEqual(histogram("RGB"), (768, 4, 675))
self.assertEqual(histogram("RGBA"), (1024, 0, 16384))
self.assertEqual(histogram("CMYK"), (1024, 0, 16384))
self.assertEqual(histogram("YCbCr"), (768, 0, 1908))