chore: stricter mypy (#2053)

* chore: improve mypy

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* chore(types): type functions in tests

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* chore(types): No partial types in tests

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

---------

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

unit_test/main_tests/conftest.py

@@ -12,12 +12,12 @@ from cibuildwheel import linux, macos, util, windows
 
 
 class ArgsInterceptor:
-    def __init__(self):
+    def __init__(self) -> None:
         self.call_count = 0
-        self.args = None
-        self.kwargs = None
+        self.args: tuple[object, ...] | None = None
+        self.kwargs: dict[str, object] | None = None
 
-    def __call__(self, *args, **kwargs):
+    def __call__(self, *args: object, **kwargs: object) -> None:
         self.call_count += 1
         self.args = args
         self.kwargs = kwargs

unit_test/main_tests/main_options_test.py

@@ -119,7 +119,7 @@ def test_manylinux_images(
         assert build_options.manylinux_images is None
 
 
-def get_default_repair_command(platform):
+def get_default_repair_command(platform: str) -> str:
     if platform == "linux":
         return "auditwheel repair -w {dest_dir} {wheel}"
     elif platform == "macos":