Reapply "Use default authenticator from snowflake connector instead o…

…f None"

This reverts commit 39bafba.

src/diepvries/deserializers/snowflake_deserializer.py

@@ -5,9 +5,10 @@
 from collections import defaultdict
 from dataclasses import asdict, dataclass
 from functools import cached_property
-from typing import Dict, List, Literal, Optional, Type
+from typing import Dict, List, Optional, Type
 
 from snowflake.connector import DictCursor, connect
+from snowflake.connector.network import DEFAULT_AUTHENTICATOR
 
 from .. import TABLE_PREFIXES, FieldDataType, FixedPrefixLoggerAdapter, TableType
 from ..driving_key_field import DrivingKeyField
@@ -32,15 +33,15 @@ class DatabaseConfiguration:
     warehouse: str
     account: str
     password: Optional[str] = None
-    authenticator: Optional[Literal["externalbrowser"]] = None
+    authenticator: Optional[str] = DEFAULT_AUTHENTICATOR
 
     def __post_init__(self):
         """Validate input for optional attributes."""
-        if self.authenticator is None and not self.password:
+        if self.authenticator == DEFAULT_AUTHENTICATOR and not self.password:
             raise ValueError(
-                "Password was not provided. It is a mandatory attribute when an "
-                "authenticator is not specified. Empty passwords are only allowed "
-                "when `authenticator='externalbrowser'`."
+                f"Password was not provided. It is a mandatory attribute when the "
+                f"authenticator is not `{DEFAULT_AUTHENTICATOR}`. Empty passwords are "
+                f"only allowed when `authenticator='externalbrowser'`."
             )
 
 

test/deserializers/test_snowflake_deserializer.py

@@ -200,7 +200,7 @@ def test_deserialized_target_tables(
 
 
 def test_database_configuration_with_password_invalid_input():
-    """Test `DatabaseConfiguration` without password nor an `authenticator`."""
+    """Test `DatabaseConfiguration` - no password nor authenticator=externalbrowser."""
     with pytest.raises(ValueError):
         _ = DatabaseConfiguration(
             database="some_db",