Merged revisions 81094 via svnmerge from

pitrou · pitrou · commit c09c92fd81b0 · 2010-05-11T23:36:40.000Z
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). ........
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
@@ -379,6 +379,19 @@ def test_empty_flush(self):
         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
diff --git a/Misc/NEWS b/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)
 
