Merged revisions 68128 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r68128 | antoine.pitrou | 2009-01-01 15:11:22 +0100 (jeu., 01 janv. 2009) | 3 lines
Issue #3680: Reference cycles created through a dict, set or deque iterator did not get collected.
........
diff --git a/Lib/test/test_deque.py b/Lib/test/test_deque.py
index 7af0803..27c89c4 100644
--- a/Lib/test/test_deque.py
+++ b/Lib/test/test_deque.py
@@ -1,7 +1,8 @@
from collections import deque
import unittest
from test import support, seq_tests
-from weakref import proxy
+import gc
+import weakref
import copy
import pickle
from io import StringIO
@@ -420,6 +421,22 @@
d.append(1)
gc.collect()
+ def test_container_iterator(self):
+ # Bug #3680: tp_traverse was not implemented for deque iterator objects
+ class C(object):
+ pass
+ for i in range(2):
+ obj = C()
+ ref = weakref.ref(obj)
+ if i == 0:
+ container = deque([obj, 1])
+ else:
+ container = reversed(deque([obj, 1]))
+ obj.x = iter(container)
+ del obj, container
+ gc.collect()
+ self.assert_(ref() is None, "Cycle was not collected")
+
class TestVariousIteratorArgs(unittest.TestCase):
def test_constructor(self):
@@ -530,7 +547,7 @@
def test_weakref(self):
d = deque('gallahad')
- p = proxy(d)
+ p = weakref.proxy(d)
self.assertEqual(str(p), str(d))
d = None
self.assertRaises(ReferenceError, str, p)