asyncio: Add __weakref__ slots to Handle and CoroWrapper. Upstream issue #166.

2 files changed, 14 insertions, 0 deletions

diff --git a/Lib/test/test_asyncio/test_events.py b/Lib/test/test_asyncio/test_events.py
index 1e64dd0..03c4149 100644
--- a/Lib/test/test_asyncio/test_events.py
+++ b/Lib/test/test_asyncio/test_events.py
@@ -21,6 +21,7 @@ import time
 import errno
 import unittest
 from unittest import mock
+import weakref
 from test import support  # find_unused_port, IPV6_ENABLED, TEST_HOME_DIR
 
 
@@ -1786,6 +1787,11 @@ class HandleTests(unittest.TestCase):
             'handle': h
         })
 
+    def test_handle_weakref(self):
+        wd = weakref.WeakValueDictionary()
+        h = asyncio.Handle(lambda: None, (), object())
+        wd['h'] = h  # Would fail without __weakref__ slot.
+
 
 class TimerTests(unittest.TestCase):
 
diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 80571b4..45a0dc1 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -4,6 +4,7 @@ import gc
 import os.path
 import types
 import unittest
+import weakref
 from test.script_helper import assert_python_ok
 
 import asyncio
@@ -1475,6 +1476,13 @@ class TaskTests(unittest.TestCase):
         self.assertEqual(call((1, 2)), (1, 2))
         self.assertEqual(call('spam'), 'spam')
 
+    def test_corowrapper_weakref(self):
+        wd = weakref.WeakValueDictionary()
+        def foo(): yield from []
+        cw = asyncio.tasks.CoroWrapper(foo(), foo)
+        wd['cw'] = cw  # Would fail without __weakref__ slot.
+        cw.gen = None  # Suppress warning from __del__.
+
 
 class GatherTestsBase: