mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 08:59:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 11

Issue #17643: Add __callback__ attribute to weakref.ref.

Browse source
This commit is contained in:
Mark Dickinson 2013-04-13 15:45:44 +01:00
parent 548677bb8c
commit 556e94b8fe
4 changed files with 44 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

24
Lib/test/test_weakref.py
View file

@ -802,6 +802,30 @@ class ReferencesTestCase(TestBase):
del root
gc.collect()
def test_callback_attribute(self):
x = Object(1)
callback = lambda ref: None
ref1 = weakref.ref(x, callback)
self.assertIs(ref1.__callback__, callback)
ref2 = weakref.ref(x)
self.assertIsNone(ref2.__callback__)
def test_callback_attribute_after_deletion(self):
x = Object(1)
ref = weakref.ref(x, self.callback)
self.assertIsNotNone(ref.__callback__)
del x
support.gc_collect()
self.assertIsNone(ref.__callback__)
def test_set_callback_attribute(self):
x = Object(1)
callback = lambda ref: None
ref1 = weakref.ref(x, callback)
with self.assertRaises(AttributeError):
ref1.__callback__ = lambda ref: None
class SubclassableWeakrefTestCase(TestBase):