Issue #12646: Add an 'eof' attribute to zlib.Decompress.
This will make it easier to detect truncated input streams.
Also, make zlib's error messages more consistent.
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index 68dd3ea..dddde47 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -447,6 +447,26 @@
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