Add tests

python · sergey-miryanov · Jun 19, 2025 · Jun 22, 2025 · Jun 22, 2025 · Jun 22, 2025
commit 61fc657b0833d19befe51d54e73c2f2831fa9e11
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
@@ -1517,6 +1517,23 @@ def test_ast_fini(self):
         """)
         assert_python_ok("-c", code)
 
+    def test_reset_type_cache_after_finalization(self):
+        # https://github.com/python/cpython/issues/135552
+        code = textwrap.dedent("""
+            class BaseNode:
+                def __del__(self):
+                    BaseNode.next = BaseNode.next.next
+
+
+            class Node(BaseNode):
+                pass
+
+
+            BaseNode.next = Node()
+            BaseNode.next.next = Node()
+        """)
+        assert_python_ok("-c", code)
+
 
 def setUpModule():
     global enabled, debug