From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sat, 26 Jan 2013 09:51:42 +0000 (+0200)
Subject: Optimize the test for issue #13454.
X-Git-Tag: v2.7.4rc1~164^2~39
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6fef14d7f399b9089a14d4ff64047f2fbd7034f3;p=python

Optimize the test for issue #13454.
Now it requires almost 4x less memory and is almost 2x faster.
---

diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index 6f933c56da..db9f437d37 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -908,10 +908,8 @@ class TestBasicOps(unittest.TestCase):
 
     # Issue 13454: Crash when deleting backward iterator from tee()
     def test_tee_del_backward(self):
-        forward, backward = tee(xrange(20000000))
-        for i in forward:
-            pass
-
+        forward, backward = tee(repeat(None, 20000000))
+        any(forward)  # exhaust the iterator
         del backward
 
     def test_StopIteration(self):