From 896bfcc2dde302a718d9b00e562b0517ba890efd Mon Sep 17 00:00:00 2001
From: Jakob Scheid <jakob.scheid@developers.internal.jcloud-services.ddns.net>
Date: Sun, 27 Sep 2026 23:45:38 +0200
Subject: [PATCH] style: use target version practices

---
 src/jcloud_docsgen/utils.py                                | 7 +++----
 .../case03/expected/user_management/storage.md             | 4 ++--
 .../case03/project/user_management/models.py               | 3 +--
 .../case03/project/user_management/storage.py              | 6 ++----
 4 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/src/jcloud_docsgen/utils.py b/src/jcloud_docsgen/utils.py
index 197a292..f8da8a6 100644
--- a/src/jcloud_docsgen/utils.py
+++ b/src/jcloud_docsgen/utils.py
@@ -20,7 +20,6 @@ import errno
 import os
 import pathlib
 import types
-from typing import Union
 
 try:
     from warnings import deprecated
@@ -154,10 +153,10 @@ def assert_that_is_instance(
     obj: object,
     class_or_tuple: type | types.UnionType | tuple[type, ...],
 ) -> None:
-    if not isinstance(class_or_tuple, Union[type, types.UnionType, tuple]):
+    if not isinstance(class_or_tuple, (type, types.UnionType, tuple)):
         raise TypeError(
-            f"class_or_tuple: expected 'Union[type, types.UnionType, "
-            f"tuple[type, ...]]', 'got {type(class_or_tuple).__name__}'",
+            f"class_or_tuple: expected 'type | types.UnionType, tupl"
+            f"e[type, ...]', 'got {type(class_or_tuple).__name__}'",
         )
     if not isinstance(obj, class_or_tuple):
         if isinstance(class_or_tuple, (tuple, types.UnionType)):
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/expected/user_management/storage.md b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/expected/user_management/storage.md
index 8753e51..b6fe41e 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/expected/user_management/storage.md
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/expected/user_management/storage.md
@@ -125,12 +125,12 @@ Returns all users.
 ##### Method signature
 
 ```python
-list_all(self) -> List[User]
+list_all(self) -> list[User]
 ```
 
 ##### Returns
 
-Return type: `List[User]`
+Return type: `list[User]`
 
 ##### Parameters
 
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/models.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/models.py
index bf4d0c9..468106b 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/models.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/models.py
@@ -1,5 +1,4 @@
 from dataclasses import dataclass
-from typing import Optional
 
 
 @dataclass
@@ -11,4 +10,4 @@ class User:
     id: str
     name: str
     email: str
-    age: Optional[int] = None
+    age: int | None = None
diff --git a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/storage.py b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/storage.py
index 88229b1..d837acc 100644
--- a/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/storage.py
+++ b/tests/unit/core/python/_core/test_PythonDocumentationGenerator/test_generate_documentation/case03/project/user_management/storage.py
@@ -1,5 +1,3 @@
-from typing import Dict, List
-
 from .models import User
 
 
@@ -10,7 +8,7 @@ class InMemoryUserStorage:
     """
 
     def __init__(self):
-        self._users: Dict[str, User] = {}
+        self._users: dict[str, User] = {}
 
     def add(self, user: User) -> None:
         """Adds a user."""
@@ -24,6 +22,6 @@ class InMemoryUserStorage:
         """Deletes a user."""
         del self._users[user_id]
 
-    def list_all(self) -> List[User]:
+    def list_all(self) -> list[User]:
         """Returns all users."""
         return list(self._users.values())