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[3.9] bpo-41052: Fix pickling heap types implemented in C with protocols 0 and 1 (GH-22870). (GH-22963)

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(cherry picked from commit 8cd1dbae32)
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Serhiy Storchaka 2020-10-25 17:56:17 +02:00 • committed by GitHub
parent af891a962b
commit 0aaecb3048
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5 changed files with 25 additions and 35 deletions
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18
Lib/test/pickletester.py
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@ -1965,6 +1965,17 @@ def test_newobj_proxies(self):
self.assertEqual(B(x), B(y), detail)
self.assertEqual(x.__dict__, y.__dict__, detail)
def test_newobj_overridden_new(self):
# Test that Python class with C implemented __new__ is pickleable
for proto in protocols:
x = MyIntWithNew2(1)
x.foo = 42
s = self.dumps(x, proto)
y = self.loads(s)
self.assertIs(type(y), MyIntWithNew2)
self.assertEqual(int(y), 1)
self.assertEqual(y.foo, 42)
def test_newobj_not_class(self):
# Issue 24552
global SimpleNewObj
@ -3085,6 +3096,13 @@ class MyFrozenSet(frozenset):
MyStr, MyUnicode,
MyTuple, MyList, MyDict, MySet, MyFrozenSet]
class MyIntWithNew(int):
def __new__(cls, value):
raise AssertionError
class MyIntWithNew2(MyIntWithNew):
__new__ = int.__new__
class SlotList(MyList):
__slots__ = ["foo"]