mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 01:46:18 +03:00
68 lines
2.0 KiB
Python
68 lines
2.0 KiB
Python
from helper import unittest, PillowTestCase, hopper
|
|
|
|
from PIL import Image, ImageSequence, TiffImagePlugin
|
|
|
|
|
|
class TestImageSequence(PillowTestCase):
|
|
|
|
def test_sanity(self):
|
|
|
|
test_file = self.tempfile("temp.im")
|
|
|
|
im = hopper("RGB")
|
|
im.save(test_file)
|
|
|
|
seq = ImageSequence.Iterator(im)
|
|
|
|
index = 0
|
|
for frame in seq:
|
|
self.assert_image_equal(im, frame)
|
|
self.assertEqual(im.tell(), index)
|
|
index += 1
|
|
|
|
self.assertEqual(index, 1)
|
|
|
|
self.assertRaises(AttributeError, lambda: ImageSequence.Iterator(0))
|
|
|
|
def test_iterator(self):
|
|
im = Image.open('Tests/images/multipage.tiff')
|
|
i = ImageSequence.Iterator(im)
|
|
for index in range(0, im.n_frames):
|
|
self.assertEqual(i[index], next(i))
|
|
self.assertRaises(IndexError, lambda: i[index+1])
|
|
self.assertRaises(StopIteration, lambda: next(i))
|
|
|
|
def _test_multipage_tiff(self):
|
|
im = Image.open('Tests/images/multipage.tiff')
|
|
for index, frame in enumerate(ImageSequence.Iterator(im)):
|
|
frame.load()
|
|
self.assertEqual(index, im.tell())
|
|
frame.convert('RGB')
|
|
|
|
def test_tiff(self):
|
|
self._test_multipage_tiff()
|
|
|
|
def test_libtiff(self):
|
|
codecs = dir(Image.core)
|
|
|
|
if "libtiff_encoder" not in codecs or "libtiff_decoder" not in codecs:
|
|
self.skipTest("tiff support not available")
|
|
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
self._test_multipage_tiff()
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
|
|
def test_consecutive(self):
|
|
im = Image.open('Tests/images/multipage.tiff')
|
|
firstFrame = None
|
|
for frame in ImageSequence.Iterator(im):
|
|
if firstFrame == None:
|
|
firstFrame = frame.copy()
|
|
pass
|
|
for frame in ImageSequence.Iterator(im):
|
|
self.assert_image_equal(frame, firstFrame)
|
|
break
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|