pub type Result<T = ()> = std::result::Result<T, Box<dyn std::error::Error>>; mod convert;mod realpath;mod home_dir {    #[test]    fn returns_existing_directory() {        if let Some(home) = gix_path::env::home_dir() {            assert!(                home.is_dir(),                "the home directory would typically exist, even though on unix we don't test for that."            );        }    }} mod xdg_config_path {    use std::ffi::OsStr;     #[test]    fn prefers_xdg_config_bases() {        let actual = gix_path::env::xdg_config("test", &mut |n| {            (n == OsStr::new("XDG_CONFIG_HOME")).then(|| "marker".into())        })        .expect("set");        #[cfg(unix)]        assert_eq!(actual.to_str(), Some("marker/git/test"));        #[cfg(windows)]        assert_eq!(actual.to_str(), Some("marker\\git\\test"));    }     #[test]    fn falls_back_to_home() {        let actual = gix_path::env::xdg_config("test", &mut |n| (n == OsStr::new("HOME")).then(|| "marker".into()))            .expect("set");        #[cfg(unix)]        assert_eq!(actual.to_str(), Some("marker/.config/git/test"));        #[cfg(windows)]        assert_eq!(actual.to_str(), Some("marker\\.config\\git\\test"));    }}mod util;