adjust MFA test to Windows - use keyring mocks too

Author: sfc-gh-mmishchenko

test/integ/sso/test_unit_mfa_cache.py

@@ -8,15 +8,16 @@
 import pytest
 
 import snowflake.connector
-from snowflake.connector.compat import IS_LINUX
 from snowflake.connector.errors import DatabaseError
 
 try:
-    from snowflake.connector.compat import IS_MACOS
+    from snowflake.connector.compat import IS_LINUX, IS_MACOS, IS_WINDOWS
 except ImportError:
     import platform
 
     IS_MACOS = platform.system() == "Darwin"
+    IS_LINUX = platform.system() == "Linux"
+    IS_WINDOWS = platform.system() == "Windows"
 
 
 # Although this is an unit test, we put it under test/integ/sso, since it needs keyring package installed
@@ -162,7 +163,7 @@ def test_body(conn_cfg):
     if IS_LINUX:
         conn_cfg["client_request_mfa_token"] = True
 
-    if IS_MACOS:
+    if IS_MACOS or IS_WINDOWS:
         with patch(
             "keyring.delete_password", Mock(side_effect=mock_del_password)
         ), patch("keyring.set_password", Mock(side_effect=mock_set_password)), patch(