From a22b05da87bdfb081d6aaecfce136ae8dbb8680c Mon Sep 17 00:00:00 2001
From: Yurii Karabas <1998uriyyo@gmail.com>
Date: Sat, 24 Jul 2021 12:53:40 +0300
Subject: bpo-44353: Improve tests covering typing.NewType pickling (GH-27302)

---
 Lib/test/test_typing.py | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index 13ac395..85cb527 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -3755,16 +3755,17 @@ class NewTypeTests:
     def test_pickle(self):
         UserAge = self.module.NewType('UserAge', float)
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
-            pickled = pickle.dumps(UserId, proto)
-            loaded = pickle.loads(pickled)
-            self.assertIs(loaded, UserId)
+            with self.subTest(proto=proto):
+                pickled = pickle.dumps(UserId, proto)
+                loaded = pickle.loads(pickled)
+                self.assertIs(loaded, UserId)
 
-            pickled = pickle.dumps(self.UserName, proto)
-            loaded = pickle.loads(pickled)
-            self.assertIs(loaded, self.UserName)
+                pickled = pickle.dumps(self.UserName, proto)
+                loaded = pickle.loads(pickled)
+                self.assertIs(loaded, self.UserName)
 
-            with self.assertRaises(pickle.PicklingError):
-                pickle.dumps(UserAge, proto)
+                with self.assertRaises(pickle.PicklingError):
+                    pickle.dumps(UserAge, proto)
 
 
 class NewTypePythonTests(NewTypeTests, BaseTestCase):
-- 
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