fix: resolve ruff linting issues in integration tests

Applied ruff auto-fixes to use modern Python 3.10+ syntax:
- Converted Union[str, None] to str | None for type annotations
- Updated isinstance checks to use modern union syntax
- Fixed import organization in test files

All linting and type checking now passes for Python 3.10+.

Author: jdrhyne

tests/integration/test_direct_api_integration.py

@@ -4,17 +4,15 @@
 test all Direct API methods against the live Nutrient DWS API.
 """
 
-from typing import Union
-
 import pytest
 
 from nutrient_dws import NutrientClient
 
 try:
     from . import integration_config  # type: ignore[attr-defined]
 
-    API_KEY: Union[str, None] = integration_config.API_KEY
-    BASE_URL: Union[str, None] = getattr(integration_config, "BASE_URL", None)
+    API_KEY: str | None = integration_config.API_KEY
+    BASE_URL: str | None = getattr(integration_config, "BASE_URL", None)
     TIMEOUT: int = getattr(integration_config, "TIMEOUT", 60)
 except ImportError:
     API_KEY = None

tests/integration/test_live_api.py

@@ -4,7 +4,6 @@
 """
 
 from __future__ import annotations
-from typing import Union
 
 import pytest
 
@@ -13,8 +12,8 @@
 try:
     from . import integration_config  # type: ignore[attr-defined]
 
-    API_KEY: Union[str, None] = integration_config.API_KEY
-    BASE_URL: Union[str, None] = getattr(integration_config, "BASE_URL", None)
+    API_KEY: str | None = integration_config.API_KEY
+    BASE_URL: str | None = getattr(integration_config, "BASE_URL", None)
     TIMEOUT: int = getattr(integration_config, "TIMEOUT", 60)
 except ImportError:
     API_KEY = None

tests/integration/test_new_tools_integration.py

@@ -5,7 +5,6 @@
 """
 
 from pathlib import Path
-from typing import Union
 
 import pytest
 
@@ -14,22 +13,22 @@
 try:
     from . import integration_config  # type: ignore[attr-defined]
 
-    API_KEY: Union[str, None] = integration_config.API_KEY
-    BASE_URL: Union[str, None] = getattr(integration_config, "BASE_URL", None)
+    API_KEY: str | None = integration_config.API_KEY
+    BASE_URL: str | None = getattr(integration_config, "BASE_URL", None)
     TIMEOUT: int = getattr(integration_config, "TIMEOUT", 60)
 except ImportError:
     API_KEY = None
     BASE_URL = None
     TIMEOUT = 60
 
 
-def assert_is_pdf(file_path_or_bytes: Union[str, bytes]) -> None:
+def assert_is_pdf(file_path_or_bytes: str | bytes) -> None:
     """Assert that a file or bytes is a valid PDF.
 
     Args:
         file_path_or_bytes: Path to file or bytes content to check.
     """
-    if isinstance(file_path_or_bytes, (str, bytes)):
+    if isinstance(file_path_or_bytes, str | bytes):
         if isinstance(file_path_or_bytes, str):
             with open(file_path_or_bytes, "rb") as f:
                 content = f.read(8)

tests/integration/test_watermark_image_file_integration.py

@@ -2,7 +2,6 @@
 
 import os
 from pathlib import Path
-from typing import Union
 
 import pytest
 
@@ -11,8 +10,8 @@
 try:
     from . import integration_config  # type: ignore[attr-defined]
 
-    API_KEY: Union[str, None] = integration_config.API_KEY
-    BASE_URL: Union[str, None] = getattr(integration_config, "BASE_URL", None)
+    API_KEY: str | None = integration_config.API_KEY
+    BASE_URL: str | None = getattr(integration_config, "BASE_URL", None)
     TIMEOUT: int = getattr(integration_config, "TIMEOUT", 60)
 except ImportError:
     API_KEY = None