look up __getnewargs__ and __getnewargs_ex__ on the object type (#16251)
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 508e02b..2a9e329 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -4701,6 +4701,20 @@
for proto in protocols:
self._check_reduce(proto, obj, listitems=list(obj))
+ def test_special_method_lookup(self):
+ protocols = range(pickle.HIGHEST_PROTOCOL + 1)
+ class Picky:
+ def __getstate__(self):
+ return {}
+
+ def __getattr__(self, attr):
+ if attr in ("__getnewargs__", "__getnewargs_ex__"):
+ raise AssertionError(attr)
+ return None
+ for protocol in protocols:
+ state = {} if protocol >= 2 else None
+ self._check_reduce(protocol, Picky(), state=state)
+
def _assert_is_copy(self, obj, objcopy, msg=None):
"""Utility method to verify if two objects are copies of each others.
"""