From bbe5412aeae14c2946a25552ae913c7ee8d02a71 Mon Sep 17 00:00:00 2001
From: Shahar Naveh <50263213+ShaharNaveh@users.noreply.github.com>
Date: Sun, 8 Feb 2026 03:00:50 +0200
Subject: [PATCH] Update `test_{binop,contains}.py` from 3.14.3 (#7038)

---
 Lib/test/test_binop.py    | 2 +-
 Lib/test/test_contains.py | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Lib/test/test_binop.py b/Lib/test/test_binop.py
index 299af09c4..b224c3d4e 100644
--- a/Lib/test/test_binop.py
+++ b/Lib/test/test_binop.py
@@ -383,7 +383,7 @@ class OperationOrderTests(unittest.TestCase):
         self.assertEqual(op_sequence(le, B, C), ['C.__ge__', 'B.__le__'])
         self.assertEqual(op_sequence(le, C, B), ['C.__le__', 'B.__ge__'])
 
-        self.assertTrue(issubclass(V, B))
+        self.assertIsSubclass(V, B)
         self.assertEqual(op_sequence(eq, B, V), ['B.__eq__', 'V.__eq__'])
         self.assertEqual(op_sequence(le, B, V), ['B.__le__', 'V.__ge__'])
 
diff --git a/Lib/test/test_contains.py b/Lib/test/test_contains.py
index 471d04a76..7339f16ac 100644
--- a/Lib/test/test_contains.py
+++ b/Lib/test/test_contains.py
@@ -16,6 +16,7 @@ class seq(base_set):
         return [self.el][n]
 
 class TestContains(unittest.TestCase):
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; Wrong error message
     def test_common_tests(self):
         a = base_set(1)
         b = myset(1)
@@ -24,8 +25,11 @@ class TestContains(unittest.TestCase):
         self.assertNotIn(0, b)
         self.assertIn(1, c)
         self.assertNotIn(0, c)
-        self.assertRaises(TypeError, lambda: 1 in a)
-        self.assertRaises(TypeError, lambda: 1 not in a)
+        msg = "argument of type 'base_set' is not a container or iterable"
+        with self.assertRaisesRegex(TypeError, msg):
+            1 in a
+        with self.assertRaisesRegex(TypeError, msg):
+            1 not in a
 
         # test char in string
         self.assertIn('c', 'abc')