bpo-44439: BZ2File.write() / LZMAFile.write() handle buffer protocol correctly (GH-26764) (GH-26845)
No longer use len() to get the length of the input data. For some buffer protocol objects,
the length obtained by using len() is wrong.
(cherry picked from commit bc6c12c72a9536acc96e7b9355fd69d1083a43c1)
Co-authored-by: Ma Lin <animalize@users.noreply.github.com>
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py
index efed3a8..7913beb 100644
--- a/Lib/test/test_bz2.py
+++ b/Lib/test/test_bz2.py
@@ -1,6 +1,7 @@
from test import support
from test.support import bigmemtest, _4G
+import array
import unittest
from io import BytesIO, DEFAULT_BUFFER_SIZE
import os
@@ -620,6 +621,14 @@ def test_read_truncated(self):
with BZ2File(BytesIO(truncated[:i])) as f:
self.assertRaises(EOFError, f.read, 1)
+ def test_issue44439(self):
+ q = array.array('Q', [1, 2, 3, 4, 5])
+ LENGTH = len(q) * q.itemsize
+
+ with BZ2File(BytesIO(), 'w') as f:
+ self.assertEqual(f.write(q), LENGTH)
+ self.assertEqual(f.tell(), LENGTH)
+
class BZ2CompressorTest(BaseTest):
def testCompress(self):