Method test_slots_weakref_base_str

Lib/test/test_dataclasses/__init__.py:3698–3710

(self)

        self.assertIs(a.__weakref__, a_ref)

    def test_slots_weakref_base_str(self):
        class Base:
            __slots__ = '__weakref__'

        @dataclass(slots=True)
        class A(Base):
            a: int

        # __weakref__ is in the base class, not A.  But an A is still weakref-able.
        self.assertIn("__weakref__", Base.__slots__)
        self.assertNotIn("__weakref__", A.__slots__)
        a = A(1)
        weakref.ref(a)

    def test_slots_weakref_base_tuple(self):
        # Same as test_slots_weakref_base, but use a tuple instead of a string