Consistently skip TYPE_CHECKING coverage (#502)

pyproject.toml

@@ -108,6 +108,7 @@ source_pkgs = ["cattrs", "tests"]
 [tool.coverage.report]
 exclude_also = [
     "@overload",
+    "if TYPE_CHECKING:",
 ]
 
 [tool.ruff]

src/cattrs/gen/__init__.py

@@ -1,7 +1,16 @@
 from __future__ import annotations
 
 import re
-from typing import TYPE_CHECKING, Any, Callable, Iterable, Mapping, Tuple, TypeVar
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    Iterable,
+    Literal,
+    Mapping,
+    Tuple,
+    TypeVar,
+)
 
 from attrs import NOTHING, Factory, resolve_types
 
@@ -31,9 +40,7 @@
 from ._lc import generate_unique_filename
 from ._shared import find_structure_handler
 
-if TYPE_CHECKING:  # pragma: no cover
-    from typing_extensions import Literal
-
+if TYPE_CHECKING:
     from ..converters import BaseConverter
 
 __all__ = [

src/cattrs/gen/_shared.py

@@ -8,8 +8,8 @@
 from ..dispatch import StructureHook
 from ..fns import raise_error
 
-if TYPE_CHECKING:  # pragma: no cover
-    from cattr.converters import BaseConverter
+if TYPE_CHECKING:
+    from ..converters import BaseConverter
 
 
 def find_structure_handler(

src/cattrs/gen/typeddicts.py

@@ -2,7 +2,7 @@
 
 import re
 import sys
-from typing import TYPE_CHECKING, Any, Callable, TypeVar
+from typing import TYPE_CHECKING, Any, Callable, Literal, TypeVar
 
 from attrs import NOTHING, Attribute
 
@@ -50,9 +50,7 @@ def get_annots(cl) -> dict[str, Any]:
 from ._lc import generate_unique_filename
 from ._shared import find_structure_handler
 
-if TYPE_CHECKING:  # pragma: no cover
-    from typing_extensions import Literal
-
+if TYPE_CHECKING:
     from ..converters import BaseConverter
 
 __all__ = ["make_dict_unstructure_fn", "make_dict_structure_fn"]