[3.10] bpo-43988: Add test.support.check_disallow_instantiation() (GH-25757) (GH-26885)



(cherry picked from commit 4f725261c6cf23d259e8fdc205e12b76ef4d2d31, fbff5387c3e1f3904420fa5a27738c6c5881305b, and 8cec740820fc875117bfa7b6bdb10202ebeb8fd5)

Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>

Automerge-Triggered-By: GH:vstinner
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index 06e501e..1a2f0fc 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -358,11 +358,7 @@ def test_ssl_types(self):
             with self.subTest(ssl_type=ssl_type):
                 with self.assertRaisesRegex(TypeError, "immutable type"):
                     ssl_type.value = None
-        with self.assertRaisesRegex(
-            TypeError,
-            "cannot create '_ssl.Certificate' instances"
-        ):
-            _ssl.Certificate()
+        support.check_disallow_instantiation(self, _ssl.Certificate)
 
     def test_private_init(self):
         with self.assertRaisesRegex(TypeError, "public constructor"):