from helper import unittest, PillowTestCase, hopper class TestImagePoint(PillowTestCase): def test_sanity(self): im = hopper() self.assertRaises(ValueError, lambda: im.point(list(range(256)))) im.point(list(range(256))*3) im.point(lambda x: x) im = im.convert("I") self.assertRaises(ValueError, lambda: im.point(list(range(256)))) im.point(lambda x: x*1) im.point(lambda x: x+1) im.point(lambda x: x*1+1) self.assertRaises(TypeError, lambda: im.point(lambda x: x-1)) self.assertRaises(TypeError, lambda: im.point(lambda x: x/1)) def test_16bit_lut(self): """ Tests for 16 bit -> 8 bit lut for converting I->L images see https://github.com/python-pillow/Pillow/issues/440 """ # This takes _forever_ on PyPy. Open Bug, # see https://github.com/python-pillow/Pillow/issues/484 # self.skipKnownBadTest(msg="Too Slow on pypy", interpreter='pypy') im = hopper("I") im.point(list(range(256))*256, 'L') def test_f_lut(self): """ Tests for floating point lut of 8bit gray image """ im = hopper('L') lut = [0.5 * float(x) for x in range(256)] out = im.point(lut, 'F') int_lut = [x//2 for x in range(256)] self.assert_image_equal(out.convert('L'), im.point(int_lut, 'L')) if __name__ == '__main__': unittest.main() # End of file