Pillow/test/test_image_putalpha.py
2014-06-05 18:15:12 +03:00

53 lines
1.3 KiB
Python

from helper import unittest, PillowTestCase
from PIL import Image
class TestImagePutAlpha(PillowTestCase):
def test_interface(self):
im = Image.new("RGBA", (1, 1), (1, 2, 3, 0))
self.assertEqual(im.getpixel((0, 0)), (1, 2, 3, 0))
im = Image.new("RGBA", (1, 1), (1, 2, 3))
self.assertEqual(im.getpixel((0, 0)), (1, 2, 3, 255))
im.putalpha(Image.new("L", im.size, 4))
self.assertEqual(im.getpixel((0, 0)), (1, 2, 3, 4))
im.putalpha(5)
self.assertEqual(im.getpixel((0, 0)), (1, 2, 3, 5))
def test_promote(self):
im = Image.new("L", (1, 1), 1)
self.assertEqual(im.getpixel((0, 0)), 1)
im.putalpha(2)
self.assertEqual(im.mode, 'LA')
self.assertEqual(im.getpixel((0, 0)), (1, 2))
im = Image.new("RGB", (1, 1), (1, 2, 3))
self.assertEqual(im.getpixel((0, 0)), (1, 2, 3))
im.putalpha(4)
self.assertEqual(im.mode, 'RGBA')
self.assertEqual(im.getpixel((0, 0)), (1, 2, 3, 4))
def test_readonly(self):
im = Image.new("RGB", (1, 1), (1, 2, 3))
im.readonly = 1
im.putalpha(4)
self.assertFalse(im.readonly)
self.assertEqual(im.mode, 'RGBA')
self.assertEqual(im.getpixel((0, 0)), (1, 2, 3, 4))
if __name__ == '__main__':
unittest.main()
# End of file