mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-11 04:07:21 +03:00
44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
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
|
|
"""
|
|
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'))
|
|
|
|
def test_f_mode(self):
|
|
self.assertRaises(ValueError, lambda: hopper('F').point(None))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|