Pillow/Tests/test_image_point.py

34 lines
1.0 KiB
Python

from tester import *
from PIL import Image
if hasattr(sys, 'pypy_version_info'):
# This takes _forever_ on pypy. Open Bug,
# see https://github.com/python-pillow/Pillow/issues/484
skip()
def test_sanity():
im = lena()
assert_exception(ValueError, lambda: im.point(list(range(256))))
assert_no_exception(lambda: im.point(list(range(256))*3))
assert_no_exception(lambda: im.point(lambda x: x))
im = im.convert("I")
assert_exception(ValueError, lambda: im.point(list(range(256))))
assert_no_exception(lambda: im.point(lambda x: x*1))
assert_no_exception(lambda: im.point(lambda x: x+1))
assert_no_exception(lambda: im.point(lambda x: x*1+1))
assert_exception(TypeError, lambda: im.point(lambda x: x-1))
assert_exception(TypeError, lambda: im.point(lambda x: x/1))
def test_16bit_lut():
""" Tests for 16 bit -> 8 bit lut for converting I->L images
see https://github.com/python-pillow/Pillow/issues/440
"""
im = lena("I")
assert_no_exception(lambda: im.point(list(range(256))*256, 'L'))