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https://github.com/python-pillow/Pillow.git
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4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
from .helper import PillowTestCase, hopper
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from PIL import Image, ImageSequence, TiffImagePlugin
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class TestImageSequence(PillowTestCase):
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def test_sanity(self):
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test_file = self.tempfile("temp.im")
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im = hopper("RGB")
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im.save(test_file)
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seq = ImageSequence.Iterator(im)
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index = 0
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for frame in seq:
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self.assert_image_equal(im, frame)
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self.assertEqual(im.tell(), index)
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index += 1
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self.assertEqual(index, 1)
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self.assertRaises(AttributeError, ImageSequence.Iterator, 0)
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def test_iterator(self):
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im = Image.open('Tests/images/multipage.tiff')
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i = ImageSequence.Iterator(im)
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for index in range(0, im.n_frames):
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self.assertEqual(i[index], next(i))
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self.assertRaises(IndexError, lambda: i[index+1])
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self.assertRaises(StopIteration, next, i)
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def _test_multipage_tiff(self):
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im = Image.open('Tests/images/multipage.tiff')
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for index, frame in enumerate(ImageSequence.Iterator(im)):
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frame.load()
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self.assertEqual(index, im.tell())
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frame.convert('RGB')
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def test_tiff(self):
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self._test_multipage_tiff()
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def test_libtiff(self):
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codecs = dir(Image.core)
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if "libtiff_encoder" not in codecs or "libtiff_decoder" not in codecs:
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self.skipTest("tiff support not available")
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TiffImagePlugin.READ_LIBTIFF = True
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self._test_multipage_tiff()
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TiffImagePlugin.READ_LIBTIFF = False
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def test_consecutive(self):
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im = Image.open('Tests/images/multipage.tiff')
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firstFrame = None
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for frame in ImageSequence.Iterator(im):
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if firstFrame is None:
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firstFrame = frame.copy()
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for frame in ImageSequence.Iterator(im):
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self.assert_image_equal(frame, firstFrame)
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break
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def test_palette_mmap(self):
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# Using mmap in ImageFile can require to reload the palette.
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im = Image.open('Tests/images/multipage-mmap.tiff')
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color1 = im.getpalette()[0:3]
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im.seek(0)
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color2 = im.getpalette()[0:3]
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self.assertEqual(color1, color2)
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