gh-95280: Fix test_get_ciphers on systems without RSA key exchange

Author: tiran

Lib/test/test_ssl.py

@@ -938,8 +938,20 @@ def test_get_ciphers(self):
         ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
         ctx.set_ciphers('AESGCM')
         names = set(d['name'] for d in ctx.get_ciphers())
-        self.assertIn('AES256-GCM-SHA384', names)
-        self.assertIn('AES128-GCM-SHA256', names)
+        expected = {
+            'AES128-GCM-SHA256',
+            'ECDHE-ECDSA-AES128-GCM-SHA256',
+            'ECDHE-RSA-AES128-GCM-SHA256',
+            'DHE-RSA-AES128-GCM-SHA256',
+            'AES256-GCM-SHA384',
+            'ECDHE-ECDSA-AES256-GCM-SHA384',
+            'ECDHE-RSA-AES256-GCM-SHA384',
+            'DHE-RSA-AES256-GCM-SHA384',
+        }
+        intersection = names.intersection(expected)
+        self.assertGreaterEqual(
+            len(intersection), 2, f"\ngot: {sorted(names)}\nexpected: {sorted(expected)}"
+        )
 
     def test_options(self):
         ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)

Misc/NEWS.d/next/Tests/2022-07-26-15-22-19.gh-issue-95280.h8HvbP.rst

@@ -0,0 +1,2 @@
+Fix problem with ``test_ssl`` ``test_get_ciphers`` on systems that require
+perfect forward secrecy (PFS) ciphers.