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Test out of bounds signed rational

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This commit is contained in:
Andrew Murray 2019-12-31 19:11:03 +11:00
parent 74d53bcd15
commit 69fc041399
1 changed files with 13 additions and 1 deletions
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14
Tests/test_file_tiff_metadata.py
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@ -264,7 +264,6 @@ class TestFileTiffMetadata(PillowTestCase):
self.assertEqual(numerator, reloaded.tag_v2[37380].numerator)
self.assertEqual(denominator, reloaded.tag_v2[37380].denominator)
# pair of 4 byte signed longs
numerator = -(2 ** 31)
denominator = 2 ** 31 - 1
@ -277,6 +276,19 @@ class TestFileTiffMetadata(PillowTestCase):
self.assertEqual(numerator, reloaded.tag_v2[37380].numerator)
self.assertEqual(denominator, reloaded.tag_v2[37380].denominator)
# out of bounds of 4 byte signed long
numerator = -2 ** 31 - 1
denominator = 1
info[37380] = TiffImagePlugin.IFDRational(numerator, denominator)
out = self.tempfile("temp.tiff")
im.save(out, tiffinfo=info, compression="raw")
reloaded = Image.open(out)
self.assertEqual(- 2 ** 31, reloaded.tag_v2[37380].numerator)
self.assertEqual(1, reloaded.tag_v2[37380].denominator)
def test_ifd_signed_long(self):
im = hopper()
info = TiffImagePlugin.ImageFileDirectory_v2()