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Test unicode preservation in text chunks.

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This commit is contained in:
Fredrik Tolf 2014-07-23 08:17:11 -07:00
parent a9f4e30641
commit 2687b5cb8d
1 changed files with 28 additions and 0 deletions
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28
Tests/test_file_png.py
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@ -281,6 +281,34 @@ class TestFilePng(PillowTestCase):
self.assertEqual(im.text["eggs"].lang, "en")
self.assertEqual(im.text["eggs"].tkey, "Eggs")
def test_nonunicode_text(self):
# Check so that non-Unicode text is saved as a tEXt rather than iTXt
im = Image.new("RGB", (32, 32))
info = PngImagePlugin.PngInfo()
info.add_text("Text", "Ascii")
im = roundtrip(im, pnginfo=info)
self.assertEqual(type(im.info["Text"]), str)
def test_unicode_text(self):
# Check preservation of non-ASCII characters on Python3
# This cannot really be meaningfully tested on Python2,
# since it didn't preserve charsets to begin with.
def rt_text(value):
im = Image.new("RGB", (32, 32))
info = PngImagePlugin.PngInfo()
info.add_text("Text", value)
im = roundtrip(im, pnginfo=info)
self.assertEqual(im.info, {"Text": value})
if str is not bytes:
rt_text(" Aa" + chr(0xa0) + chr(0xc4) + chr(0xff)) # Latin1
rt_text(chr(0x400) + chr(0x472) + chr(0x4ff)) # Cyrillic
rt_text(chr(0x4e00) + chr(0x66f0) + # CJK
chr(0x9fba) + chr(0x3042) + chr(0xac00))
rt_text("A" + chr(0xc4) + chr(0x472) + chr(0x3042)) # Combined
def test_scary(self):
# Check reading of evil PNG file. For information, see:
# http://scary.beasts.org/security/CESA-2004-001.txt