from PIL import Image from helper import unittest, 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): im = Image.open("Tests/images/16_bit_noise.tif") self.assertEqual(im.mode, 'I;16') extrema = im.getextrema() self.assertEqual(extrema, (106, 285)) if __name__ == '__main__': unittest.main()