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.
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diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py
index 403d5eb..2e74b68 100644
--- a/Lib/test/test_dict.py
+++ b/Lib/test/test_dict.py
@@ -2,6 +2,7 @@
from test import support
import sys, collections, random, string
+import gc, weakref
class DictTest(unittest.TestCase):
@@ -648,6 +649,21 @@
pass
d = {}
+ def test_container_iterator(self):
+ # Bug #3680: tp_traverse was not implemented for dictiter and
+ # dictview objects.
+ class C(object):
+ pass
+ views = (dict.items, dict.values, dict.keys)
+ for v in views:
+ obj = C()
+ ref = weakref.ref(obj)
+ container = {obj: 1}
+ obj.v = v(container)
+ obj.x = iter(obj.v)
+ del obj, container
+ gc.collect()
+ self.assert_(ref() is None, "Cycle was not collected")
from test import mapping_tests