Upstream fabiocaccamo/python-benedict state of the touched files before 8e13b67bfe

benedict/dicts/base/base_dict.py

@@ -22,32 +22,15 @@ class BaseDict(dict[_K, _V]):
     _dict: dict[_K, _V] | None
     _frozen: bool
 
-    # ids of mappings being unwrapped anywhere on the call stack, to detect
-    # self-referential structures instead of recursing forever
-    _unwrapping_ids: set[int] = set()
-
     @classmethod
     def _get_dict_or_value(cls, value: Any) -> Any:
         value = value.dict() if isinstance(value, cls) else value
         if isinstance(value, MutableMapping):
-            value_id = id(value)
-            if value_id in cls._unwrapping_ids:
-                # it contains itself; unwind here before reaching code with no cycle
-                # protection of its own
-                raise ValueError(
-                    "Cannot assign a dict that contains itself "
-                    "(directly or indirectly): self-referential "
-                    "(cyclic) structures are not supported."
-                )
-            cls._unwrapping_ids.add(value_id)
-            try:
-                for key in value.keys():
-                    key_val = value[key]
-                    if isinstance(key_val, cls):
-                        key_val = cls._get_dict_or_value(value[key])
-                        value[key] = key_val
-            finally:
-                cls._unwrapping_ids.discard(value_id)
+            for key in value.keys():
+                key_val = value[key]
+                if isinstance(key_val, cls):
+                    key_val = cls._get_dict_or_value(value[key])
+                    value[key] = key_val
         return value
 
     def __new__(cls, *args: Any, **kwargs: Any) -> Self:

tests/github/test_issue_0592.py

@@ -1,44 +0,0 @@
-import unittest
-
-from benedict import benedict
-
-
-class github_issue_0592_test_case(unittest.TestCase):
-    """
-    This class describes a github issue 0592 test case.
-    https://github.com/fabiocaccamo/python-benedict/issues/592
-
-    To run this specific test:
-    - Run python -m unittest tests.github.test_issue_0592
-    """
-
-    def test_assigning_dict_to_its_own_nested_descendant_does_not_raise(self) -> None:
-        # not self-referential yet at assignment time, so it must keep working
-        d = benedict(keyattr_enabled=True, keyattr_dynamic=True)
-        d.a.b.c = d
-        self.assertIs(dict.__getitem__(d, "a")["b"]["c"], d)
-
-    def test_assigning_dict_to_its_own_nested_descendant_twice_does_not_recurse(
-        self,
-    ) -> None:
-        # once `d` contains itself, unwrapping it again must not raise
-        # RecursionError (it used to crash the process)
-        d = benedict(keyattr_enabled=True, keyattr_dynamic=True)
-        d.a.b.c = d
-        with self.assertRaises(ValueError):
-            d.a.b.d.e = d
-
-    def test_self_assignment_at_new_key_still_works(self) -> None:
-        # assigning a dict to itself under a new key is unaffected by the fix
-        d = benedict({"a": {"b": 1}})
-        d["self"] = d
-        self.assertIsInstance(d["self"], benedict)
-        self.assertEqual(d["self"]["a"], {"b": 1})
-
-    def test_normal_nested_dict_assignment_is_unaffected(self) -> None:
-        # non self-referential values must still be unwrapped as before
-        inner = benedict({"x": 1})
-        outer = benedict()
-        outer["inner"] = inner
-        self.assertEqual(outer, {"inner": {"x": 1}})
-        self.assertIsNot(outer["inner"], inner)