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[3.11] gh-102069: Fix __weakref__ descriptor generation for custom dataclasses (GH-102075) (#102662)

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gh-102069: Fix `__weakref__` descriptor generation for custom dataclasses (GH-102075)
(cherry picked from commit d97757f793)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
This commit is contained in:
Miss Islington (bot) 2023-03-13 15:17:46 -07:00 • committed by GitHub
parent a4fcd06c50
commit b0e221cfc8
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3 changed files with 15 additions and 4 deletions
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15
Lib/test/test_dataclasses.py
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@ -3076,6 +3076,8 @@ class TestSlots(unittest.TestCase):
with self.assertRaisesRegex(TypeError,
"cannot create weak reference"):
weakref.ref(a)
with self.assertRaises(AttributeError):
a.__weakref__
def test_slots_weakref(self):
@dataclass(slots=True, weakref_slot=True)
@ -3084,7 +3086,9 @@ class TestSlots(unittest.TestCase):
self.assertIn("__weakref__", A.__slots__)
a = A(1)
weakref.ref(a)
a_ref = weakref.ref(a)
self.assertIs(a.__weakref__, a_ref)
def test_slots_weakref_base_str(self):
class Base:
@ -3150,7 +3154,8 @@ class TestSlots(unittest.TestCase):
self.assertIn("__weakref__", Base.__slots__)
self.assertNotIn("__weakref__", A.__slots__)
a = A(1)
weakref.ref(a)
a_ref = weakref.ref(a)
self.assertIs(a.__weakref__, a_ref)
def test_weakref_slot_subclass_no_weakref_slot(self):
@dataclass(slots=True, weakref_slot=True)
@ -3166,7 +3171,8 @@ class TestSlots(unittest.TestCase):
self.assertIn("__weakref__", Base.__slots__)
self.assertNotIn("__weakref__", A.__slots__)
a = A(1)
weakref.ref(a)
a_ref = weakref.ref(a)
self.assertIs(a.__weakref__, a_ref)
def test_weakref_slot_normal_base_weakref_slot(self):
class Base:
@ -3181,7 +3187,8 @@ class TestSlots(unittest.TestCase):
self.assertIn("__weakref__", Base.__slots__)
self.assertNotIn("__weakref__", A.__slots__)
a = A(1)
weakref.ref(a)
a_ref = weakref.ref(a)
self.assertIs(a.__weakref__, a_ref)
class TestDescriptors(unittest.TestCase):