Merged revisions 81094 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81094 | antoine.pitrou | 2010-05-12 01:32:31 +0200 (mer., 12 mai 2010) | 6 lines

  Issue #8672: Add a zlib test ensuring that an incomplete stream can be
  handled by a decompressor object without errors (it returns incomplete
  uncompressed data).
........

Lib/test/test_zlib.py

@@ -379,6 +379,19 @@ class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase):
         dco = zlib.decompressobj()
         self.assertEqual(dco.flush(), b"") # Returns nothing
 
+    def test_decompress_incomplete_stream(self):
+        # This is 'foo', deflated
+        x = b'x\x9cK\xcb\xcf\x07\x00\x02\x82\x01E'
+        # For the record
+        self.assertEqual(zlib.decompress(x), b'foo')
+        self.assertRaises(zlib.error, zlib.decompress, x[:-5])
+        # Omitting the stream end works with decompressor objects
+        # (see issue #8672).
+        dco = zlib.decompressobj()
+        y = dco.decompress(x[:-5])
+        y += dco.flush()
+        self.assertEqual(y, b'foo')
+
     if hasattr(zlib.compressobj(), "copy"):
         def test_compresscopy(self):
             # Test copying a compression object

Misc/NEWS

@@ -1276,6 +1276,10 @@ Documentation
 Tests
 -----
 
+- Issue #8672: Add a zlib test ensuring that an incomplete stream can be
+  handled by a decompressor object without errors (it returns incomplete
+  uncompressed data).
+
 - Issue #8533: regrtest uses backslashreplace error handler for stdout to avoid
   UnicodeEncodeError (write non-ASCII character to stdout using ASCII encoding)