Pillow/Tests/test_image_putdata.py

89 lines
2.4 KiB
Python

from helper import unittest, PillowTestCase, hopper
from array import array
import sys
from PIL import Image
class TestImagePutData(PillowTestCase):
def test_sanity(self):
im1 = hopper()
data = list(im1.getdata())
im2 = Image.new(im1.mode, im1.size, 0)
im2.putdata(data)
self.assert_image_equal(im1, im2)
# readonly
im2 = Image.new(im1.mode, im2.size, 0)
im2.readonly = 1
im2.putdata(data)
self.assertFalse(im2.readonly)
self.assert_image_equal(im1, im2)
def test_long_integers(self):
# see bug-200802-systemerror
def put(value):
im = Image.new("RGBA", (1, 1))
im.putdata([value])
return im.getpixel((0, 0))
self.assertEqual(put(0xFFFFFFFF), (255, 255, 255, 255))
self.assertEqual(put(0xFFFFFFFF), (255, 255, 255, 255))
self.assertEqual(put(-1), (255, 255, 255, 255))
self.assertEqual(put(-1), (255, 255, 255, 255))
if sys.maxsize > 2**32:
self.assertEqual(put(sys.maxsize), (255, 255, 255, 255))
else:
self.assertEqual(put(sys.maxsize), (255, 255, 255, 127))
def test_pypy_performance(self):
im = Image.new('L', (256, 256))
im.putdata(list(range(256))*256)
def test_mode_i(self):
src = hopper('L')
data = list(src.getdata())
im = Image.new('I', src.size, 0)
im.putdata(data, 2, 256)
target = [2 * elt + 256 for elt in data]
self.assertEqual(list(im.getdata()), target)
def test_mode_F(self):
src = hopper('L')
data = list(src.getdata())
im = Image.new('F', src.size, 0)
im.putdata(data, 2.0, 256.0)
target = [2.0 * float(elt) + 256.0 for elt in data]
self.assertEqual(list(im.getdata()), target)
def test_array_B(self):
# shouldn't segfault
# see https://github.com/python-pillow/Pillow/issues/1008
arr = array('B', [0])*15000
im = Image.new('L', (150, 100))
im.putdata(arr)
self.assertEqual(len(im.getdata()), len(arr))
def test_array_F(self):
# shouldn't segfault
# see https://github.com/python-pillow/Pillow/issues/1008
im = Image.new('F', (150, 100))
arr = array('f', [0.0])*15000
im.putdata(arr)
self.assertEqual(len(im.getdata()), len(arr))
if __name__ == '__main__':
unittest.main()