from PIL import Image from .helper import PillowTestCase, hopper class TestImageGetExtrema(PillowTestCase): def test_extrema(self): def extrema(mode): return hopper(mode).getextrema() self.assertEqual(extrema("1"), (0, 255)) self.assertEqual(extrema("L"), (0, 255)) self.assertEqual(extrema("I"), (0, 255)) self.assertEqual(extrema("F"), (0, 255)) self.assertEqual(extrema("P"), (0, 225)) # fixed palette self.assertEqual(extrema("RGB"), ((0, 255), (0, 255), (0, 255))) self.assertEqual(extrema("RGBA"), ((0, 255), (0, 255), (0, 255), (255, 255))) self.assertEqual(extrema("CMYK"), ((0, 255), (0, 255), (0, 255), (0, 0))) self.assertEqual(extrema("I;16"), (0, 255)) def test_true_16(self): with Image.open("Tests/images/16_bit_noise.tif") as im: self.assertEqual(im.mode, "I;16") extrema = im.getextrema() self.assertEqual(extrema, (106, 285))