Pillow/Tests/test_image_split.py
2015-04-24 18:24:52 +10:00

68 lines
2.4 KiB
Python

from helper import unittest, PillowTestCase, hopper
from PIL import Image
class TestImageSplit(PillowTestCase):
def test_split(self):
def split(mode):
layers = hopper(mode).split()
return [(i.mode, i.size[0], i.size[1]) for i in layers]
self.assertEqual(split("1"), [('1', 128, 128)])
self.assertEqual(split("L"), [('L', 128, 128)])
self.assertEqual(split("I"), [('I', 128, 128)])
self.assertEqual(split("F"), [('F', 128, 128)])
self.assertEqual(split("P"), [('P', 128, 128)])
self.assertEqual(
split("RGB"), [('L', 128, 128), ('L', 128, 128), ('L', 128, 128)])
self.assertEqual(
split("RGBA"),
[('L', 128, 128), ('L', 128, 128),
('L', 128, 128), ('L', 128, 128)])
self.assertEqual(
split("CMYK"),
[('L', 128, 128), ('L', 128, 128),
('L', 128, 128), ('L', 128, 128)])
self.assertEqual(
split("YCbCr"),
[('L', 128, 128), ('L', 128, 128), ('L', 128, 128)])
def test_split_merge(self):
def split_merge(mode):
return Image.merge(mode, hopper(mode).split())
self.assert_image_equal(hopper("1"), split_merge("1"))
self.assert_image_equal(hopper("L"), split_merge("L"))
self.assert_image_equal(hopper("I"), split_merge("I"))
self.assert_image_equal(hopper("F"), split_merge("F"))
self.assert_image_equal(hopper("P"), split_merge("P"))
self.assert_image_equal(hopper("RGB"), split_merge("RGB"))
self.assert_image_equal(hopper("RGBA"), split_merge("RGBA"))
self.assert_image_equal(hopper("CMYK"), split_merge("CMYK"))
self.assert_image_equal(hopper("YCbCr"), split_merge("YCbCr"))
def test_split_open(self):
codecs = dir(Image.core)
if 'zip_encoder' in codecs:
test_file = self.tempfile("temp.png")
else:
test_file = self.tempfile("temp.pcx")
def split_open(mode):
hopper(mode).save(test_file)
im = Image.open(test_file)
return len(im.split())
self.assertEqual(split_open("1"), 1)
self.assertEqual(split_open("L"), 1)
self.assertEqual(split_open("P"), 1)
self.assertEqual(split_open("RGB"), 3)
if 'zip_encoder' in codecs:
self.assertEqual(split_open("RGBA"), 4)
if __name__ == '__main__':
unittest.main()
# End of file