Added a test case `test_refresh_netsets_setup_dir` to `tests/test_reputation.py` to ensure that the `setup_dir` nested function in `refresh_netsets` creates the required cache directory.
The test utilizes `unittest.mock.patch` to spy on `pathlib.Path.mkdir`, verifying that the function is called with `parents=True, exist_ok=True`. By setting the mock's `side_effect` to the original `mkdir` function, we ensure side-effects still execute securely, without causing issues if the test suite is run concurrently. All tests pass successfully and test coverage is extended.
Co-authored-by: Horizontal42 <75383519+Horizontal42@users.noreply.github.com>
