fix signature

Author: blink1073

pymongo/auth_shared.py

@@ -100,8 +100,8 @@ def _validate_canonicalize_host_name(value: str | bool) -> str | bool:
 def _build_credentials_tuple(
     mech: str,
     source: Optional[str],
-    user: str,
-    passwd: str,
+    user: Optional[str],
+    passwd: Optional[str],
     extra: Mapping[str, Any],
     database: Optional[str],
 ) -> MongoCredential:

test/auth_oidc/test_auth_oidc.py

@@ -859,15 +859,15 @@ def test_2_6_ALLOWED_HOSTS_defaults_ignored(self):
         # Create a MongoCredential for OIDC with a machine callback.
         props = {"OIDC_CALLBACK": self.create_request_cb()}
         extra = dict(authmechanismproperties=props)
-        mongo_creds = _build_credentials_tuple("MONGODB-OIDC", "", "foo", "", extra, "test")
+        mongo_creds = _build_credentials_tuple("MONGODB-OIDC", None, "foo", None, extra, "test")
         # Assert that creating an authenticator for example.com does not result in an error.
         authenticator = _get_authenticator(mongo_creds, ("example.com", 30))
         assert authenticator.properties.username == "foo"
 
         # Create a MongoCredential for OIDC with an ENVIRONMENT.
         props = {"ENVIRONMENT": "test"}
         extra = dict(authmechanismproperties=props)
-        mongo_creds = _build_credentials_tuple("MONGODB-OIDC", "", "", "", extra, "test")
+        mongo_creds = _build_credentials_tuple("MONGODB-OIDC", None, None, None, extra, "test")
         # Assert that creating an authenticator for example.com does not result in an error.
         authenticator = _get_authenticator(mongo_creds, ("example.com", 30))
         assert authenticator.properties.username is None