From 4ef93b57206822c0da55b019c1b5db171f03c632 Mon Sep 17 00:00:00 2001
From: Sai Vineeth Reddy <saivineethreddysuravi@gmail.com>
Date: Fri, 12 Dec 2025 14:22:22 -0600
Subject: [PATCH] gh-142252: Augment functools.cached_property tests for
 set/delete

---
 Lib/test/test_functools.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
index 090926fd8d8b61..63f47caf4d3ec1 100644
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -3561,6 +3561,13 @@ def test_cached(self):
         self.assertEqual(item.cost, 2)
         self.assertEqual(item.cost, 2) # not 3
 
+        item.cost = 42
+        self.assertEqual(item.cost, 42)
+
+        del item.cost
+        self.assertEqual(item.cost, 3)
+        self.assertEqual(item.cost, 3) # not 4
+
     def test_cached_attribute_name_differs_from_func_name(self):
         item = OptionallyCachedCostItem()
         self.assertEqual(item.get_cost(), 2)