py3k: Add TarIO test

Not too convinced of the size fix. While it works against my file, I'm not
sure someone would have accidentally been an index off and not noticed.
This commit is contained in:
Brian Crowell 2012-10-25 07:57:39 -05:00 committed by Brian Crowell
parent 49b0d1563e
commit d6a0dec15b
3 changed files with 24 additions and 2 deletions

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Images/lena.tar Normal file

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@ -39,13 +39,13 @@ class TarIO(ContainerIO.ContainerIO):
raise IOError("unexpected end of tar file")
name = s[:100].decode('utf-8')
i = name.find(b'\0')
i = name.find('\0')
if i == 0:
raise IOError("cannot find subfile")
if i > 0:
name = name[:i]
size = int(s[124:136], 8)
size = int(s[124:135], 8)
if file == name:
break

22
Tests/test_file_tar.py Normal file
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@ -0,0 +1,22 @@
from tester import *
from PIL import Image, TarIO
# sample ppm stream
tarfile = "Images/lena.tar"
def test_sanity():
tar = TarIO.TarIO(tarfile, 'lena.png')
im = Image.open(tar)
im.load()
assert_equal(im.mode, "RGB")
assert_equal(im.size, (128, 128))
assert_equal(im.format, "PNG")
tar = TarIO.TarIO(tarfile, 'lena.jpg')
im = Image.open(tar)
im.load()
assert_equal(im.mode, "RGB")
assert_equal(im.size, (128, 128))
assert_equal(im.format, "JPEG")