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Issue #12646: Add an 'eof' attribute to zlib.Decompress.

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This will make it easier to detect truncated input streams.

Also, make zlib's error messages more consistent.
This commit is contained in:
Nadeem Vawda 2011-08-13 15:22:40 +02:00
parent 74b6abf61f
commit 1c38546e49
4 changed files with 48 additions and 14 deletions
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20
Lib/test/test_zlib.py
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@ -447,6 +447,26 @@ class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase):
y += dco.flush()
self.assertEqual(y, b'foo')
def test_decompress_eof(self):
x = b'x\x9cK\xcb\xcf\x07\x00\x02\x82\x01E' # 'foo'
dco = zlib.decompressobj()
self.assertFalse(dco.eof)
dco.decompress(x[:-5])
self.assertFalse(dco.eof)
dco.decompress(x[-5:])
self.assertTrue(dco.eof)
dco.flush()
self.assertTrue(dco.eof)
def test_decompress_eof_incomplete_stream(self):
x = b'x\x9cK\xcb\xcf\x07\x00\x02\x82\x01E' # 'foo'
dco = zlib.decompressobj()
self.assertFalse(dco.eof)
dco.decompress(x[:-5])
self.assertFalse(dco.eof)
dco.flush()
self.assertFalse(dco.eof)
if hasattr(zlib.compressobj(), "copy"):
def test_compresscopy(self):
# Test copying a compression object