From ba5c74329dadfb685bb921407916ffbb2efb78cc Mon Sep 17 00:00:00 2001
From: Alexandre Vassalotti <alexandre@peadrop.com>
Date: Tue, 4 Aug 2009 23:19:13 +0000
Subject: Issue 5449: Fix io.BytesIO to not accept arbitrary keywords

Patch contributed by Erick Tryzelaar.
---
 Lib/test/test_memoryio.py | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'Lib/test/test_memoryio.py')

diff --git a/Lib/test/test_memoryio.py b/Lib/test/test_memoryio.py
index 7dd1658ca4..6ab83282fe 100644
--- a/Lib/test/test_memoryio.py
+++ b/Lib/test/test_memoryio.py
@@ -461,6 +461,11 @@ class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, unittest.TestCase):
         self.assertEqual(memio.write(a), 10)
         self.assertEqual(memio.getvalue(), buf)
 
+    def test_issue5449(self):
+        buf = self.buftype("1234567890")
+        self.ioclass(initial_bytes=buf)
+        self.assertRaises(TypeError, self.ioclass, buf, foo=None)
+
 
 class TextIOTestMixin:
 
-- 
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