Force TLS1_2 in tests.

Author: Jean-Daniel Dupas

tests/test_ssl.py

@@ -458,8 +458,8 @@ def test_set_cipher_list_no_cipher_match(self, context):
             )
 
     @pytest.mark.parametrize("sigalgs_list", [
-        b"RSA-PSS+SHA256:RSA-PSS+SHA384",
-        u"RSA-PSS+SHA256:RSA-PSS+SHA384",
+        b"RSA+SHA256:RSA+SHA384",
+        u"RSA+SHA256:RSA+SHA384",
     ])
     def test_set_sigalgs_list(self, context, sigalgs_list):
         """
@@ -488,13 +488,12 @@ def test_set_sigalgs_list_invalid_name(self, context):
 
     def test_set_sigalgs_list_not_supported(self):
         """
-        `Context.set_cipher_list` raises `OpenSSL.SSL.Error` with a
-        `"no cipher match"` reason string regardless of the TLS
-        version.
+        If no signature algorithms supported by the server are set, the handshake
+        fails with a `"no suitable signature algorithm"` reason string.
         """
 
         def make_client(socket):
-            context = Context(SSLv23_METHOD)
+            context = Context(TLSv1_2_METHOD)
             context.set_sigalgs_list(b"ECDSA+SHA256:ECDSA+SHA384")
             c = Connection(context, socket)
             c.set_connect_state()