test: satisfy updated linters

src/darker/black_diff.py

@@ -32,10 +32,21 @@
  based on whether reformats touch user-edited lines
 
 """
+
+from __future__ import annotations
+
 import inspect
 import logging
-from pathlib import Path
-from typing import Collection, Optional, Pattern, Set, Tuple, TypedDict, Union
+from typing import (
+ TYPE_CHECKING,
+ Collection,
+ Optional,
+ Pattern,
+ Set,
+ Tuple,
+ TypedDict,
+ Union,
+)
 
 # `FileMode as Mode` required to satisfy mypy==0.782. Strange.
 from black import FileMode as Mode
@@ -56,6 +67,9 @@
 from darkgraylib.config import ConfigurationError
 from darkgraylib.utils import TextDocument
 
+if TYPE_CHECKING:
+ from pathlib import Path
+
 __all__ = ["BlackConfig", "Mode", "run_black"]
 
 logger = logging.getLogger(__name__)
@@ -69,9 +83,9 @@ class BlackConfig(TypedDict, total=False):
  """Type definition for Black configuration dictionaries"""
 
  config: str
- exclude: Pattern[str]
- extend_exclude: Pattern[str]
- force_exclude: Pattern[str]
+ exclude: Pattern[str] | None
+ extend_exclude: Pattern[str] | None
+ force_exclude: Pattern[str] | None
  target_version: Union[str, Set[str]]
  line_length: int
  skip_string_normalization: bool
@@ -164,7 +178,7 @@ def filter_python_files(
  directories,
  root,
  include=DEFAULT_INCLUDE_RE,
- exclude=black_config.get("exclude", DEFAULT_EXCLUDE_RE),
+ exclude=black_config.get("exclude") or DEFAULT_EXCLUDE_RE,
  extend_exclude=black_config.get("extend_exclude"),
  force_exclude=black_config.get("force_exclude"),
  report=Report(),