fix quality check

Author: NicoleMGomes

src/sap_cloud_sdk/agentgateway/_customer.py

@@ -231,7 +231,8 @@ def load_customer_credentials_from_env() -> CustomerCredentials:
         )
 
     logger.debug(
-        "Loaded %d integration dependencies from environment", len(integration_dependencies)
+        "Loaded %d integration dependencies from environment",
+        len(integration_dependencies),
     )
 
     return CustomerCredentials(
@@ -387,7 +388,8 @@ def _request_token_transparent(
             )
 
         logger.debug(
-            "Token acquired successfully (transparent mode, length: %d)", len(access_token)
+            "Token acquired successfully (transparent mode, length: %d)",
+            len(access_token),
         )
         return token_data
 
@@ -417,6 +419,11 @@ def _request_token_mtls(
     Raises:
         AgentGatewaySDKError: If token request fails.
     """
+    if credentials.certificate is None or credentials.private_key is None:
+        raise AgentGatewaySDKError(
+            "mTLS token request requires certificate and private_key. "
+            "Use _request_token_transparent() for TlsMode.TRANSPARENT."
+        )
     ssl_context = _create_ssl_context(credentials.certificate, credentials.private_key)
 
     data = {

src/sap_cloud_sdk/agentgateway/config.py

@@ -68,5 +68,9 @@ def from_env() -> "ClientConfig":
             otherwise STANDARD.
         """
         raw = os.environ.get(_ENV_TLS_MODE, "").lower()
-        tls_mode = TlsMode.TRANSPARENT if raw == TlsMode.TRANSPARENT.value else TlsMode.STANDARD
+        tls_mode = (
+            TlsMode.TRANSPARENT
+            if raw == TlsMode.TRANSPARENT.value
+            else TlsMode.STANDARD
+        )
         return ClientConfig(tls_mode=tls_mode)

tests/agentgateway/unit/test_config.py

@@ -76,4 +76,3 @@ def test_from_env_unknown_value_falls_back_to_standard(self):
         with patch.dict(os.environ, {"AGW_TLS_MODE": "unknown"}):
             config = ClientConfig.from_env()
         assert config.tls_mode == TlsMode.STANDARD
-

tests/agentgateway/unit/test_customer.py

@@ -1017,4 +1017,3 @@ def test_returns_exchanged_token(self):
         call_kwargs = mock_req.call_args
         assert call_kwargs.kwargs["extra_data"]["assertion"] == "user-jwt"
         assert call_kwargs.kwargs["grant_type"] == "urn:ietf:params:oauth:grant-type:jwt-bearer"
-